subset stringclasses 2
values | input stringlengths 207 1.63k | output listlengths 1 1 |
|---|---|---|
base | Question:
In the first step of making some ceramic cups, the following manufacturing process is used. Liquid clay is poured into a mold, allowed to solidify, then removed from the mold. What is the name of this manufacturing process?
Options:
(A) casting
(B) milling
(C) finishing
(D) refining
Answer: casting
Question:... | [
"Sunlight is the source of energy for nearly all ecosystems."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which statement best explains why photosynthesis is the foundation of most food webs?
Options:
(A) Sunlight is the source of energy for nearly all ecosystems.
(B) Most ecosystems are found on land ... | [
"Sunlight is the source of energy for nearly all ecosystems."
] |
base | Question:
When mining for coal, a mining company removes the plants and layers of soil and rock above the coal deposit, and takes the coal. When the operation is complete, the mining company returns soil and rock, covers it with a layer of topsoil, and plants trees and grass. The trees and grass help to
Options:
(A) pr... | [
"breathing mask"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which piece of safety equipment is used to keep mold spores from entering the respiratory system?
Options:
(A) safety goggles
(B) breathing mask
(C) rubber gloves
(D) lead apron
Answer: | [
"breathing mask"
] |
base | Question:
What is one way to help slow down or stop the greenhouse effect?
Options:
(A) find new coal resources in the earth
(B) clean up the litter in neighborhoods
(C) clean up the water pollution in local lakes
(D) walk or ride a bike instead of driving a car
Answer: walk or ride a bike instead of driving a car
Que... | [
"ovary cells"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Meiosis is a type of cell division in which germ cells divide to produce haploid cells. Where does meiosis occur?
Options:
(A) brain cells
(B) bone cells
(C) muscle cells
(D) ovary cells
Answer: | [
"ovary cells"
] |
base | Question:
A group of cells performing the same function in the body is called
Options:
(A) a tissue.
(B) an organelle.
(C) an organism.
(D) a system.
Answer: a tissue.
Question:
Recently the telephone company announced the implementation of a new telephone area code for Massachusetts. What technological changes are re... | [
"soft"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which characteristic describes the texture of a kitten's fur?
Options:
(A) gray
(B) warm
(C) long
(D) soft
Answer: | [
"soft"
] |
base | Question:
When atmospheric carbon dioxide increases, some of the carbon dioxide dissolves in the ocean causing the ocean to become
Options:
(A) warmer.
(B) cooler.
(C) more acidic.
(D) more alkaline.
Answer: more acidic.
Question:
During the Siberian summer, reindeer graze on young roots, fungi, grass, and other veget... | [
"a massive core surrounded by negatively-charged particles"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which best describes the structure of an atom?
Options:
(A) a lightweight core surrounded by neutral particles
(B) a massive core surrounded by negatively-charged particles
(C) a network of interac... | [
"a massive core surrounded by negatively-charged particles"
] |
base | Question:
Which of these is a chemical property of a material?
Options:
(A) density
(B) flammability
(C) color
(D) brittleness
Answer: flammability
Question:
In which part of a plant cell does photosynthesis occur?
Options:
(1) nucleus
(2) chloroplast
(3) cell membrane
(4) cell wall
Answer: chloroplast
Question:
To e... | [
"light-year."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the
Options:
(A) meter.
(B) kilometer.
(C) light-year.
(D) astronomical unit.
An... | [
"light-year."
] |
base | Question:
Which scientist developed the mathematical models used to describe the changes in the motion of objects as well as the forces that cause the change in motion?
Options:
(A) Dalton
(B) Newton
(C) Aristotle
(D) Ptolemy
Answer: Newton
Question:
Fossil fuels were formed from
Options:
(A) uranium
(B) sea water
(C)... | [
"wash hands"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A student has just completed a laboratory activity. What is the last action that the student should perform before leaving the lab area?
Options:
(A) wash hands
(B) turn off all equipment
(C) put a... | [
"wash hands"
] |
base | Question:
Which is most likely to cause an organism to become endangered or extinct?
Options:
(A) habitat loss
(B) behavioral changes
(C) increased reproduction rate
(D) altered migration patterns
Answer: habitat loss
Question:
How is the mass of an atom calculated?
Options:
(A) add the number of protons to the number... | [
"grams"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Students are investigating the effects of different fertilizers on plant growth. Which units would be best to measure the mass of the fertilizer used?
Options:
(A) meters
(B) centimeters
(C) grams
... | [
"grams"
] |
base | Question:
The visible light spectrum can be subdivided according to
Options:
(A) the types of waves.
(B) the sizes of particles.
(C) a range of colors.
(D) a type of energy.
Answer: a range of colors.
Question:
One year a farmer decided not to plant crops in one of his fields. During that year his farm received a grea... | [
"food."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Plants use sunlight to make
Options:
(A) soil.
(B) minerals.
(C) food.
(D) water.
Answer: | [
"food."
] |
base | Question:
Which process is taking place when water freezes between cracks in rocks?
Options:
(A) deposition
(B) weathering
(C) sedimentation
(D) crystallization
Answer: weathering
Question:
Which organisms break down and recycle dead plants and animals?
Options:
(A) predators
(B) prey
(C) decomposers
(D) producers
Ans... | [
"Xylem carries water from the roots to the leaves."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which of these correctly identifies the way materials are transported in a plant?
Options:
(A) Xylem carries water from the roots to the leaves.
(B) Phloem carries minerals from the roots to the le... | [
"Xylem carries water from the roots to the leaves."
] |
base | Question:
The mass of an object is measured using which unit?
Options:
(A) liter
(B) gram
(C) meter
(D) yard
Answer: gram
Question:
A birdwatcher wants to identify an eastern bluebird. What feature of a bird should the birdwatcher evaluate first to identify an eastern bluebird?
Options:
(A) beak shape
(B) eye position... | [
"Sunlight is reduced."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
When trees develop leaves in the spring, 10 changes occur on the forest floor. Why does the development of leaves cause changes on the forest floor?
Options:
(A) Rainfall increases.
(B) Sunlight is... | [
"Sunlight is reduced."
] |
base | Question:
Muscle cells need to quickly convert energy from food molecules into a usable form. For this reason, which of the following do muscle cells have in greater numbers than most other types of cells?
Options:
(A) chromosomes
(B) mitochondria
(C) nuclei
(D) vacuoles
Answer: mitochondria
Question:
The electromagne... | [
"releasing hormones and transporting them to cells of the body"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
The circulatory system and the endocrine system work together in the human body. Which describes one way in which these systems interact?
Options:
(A) taking in oxygen and transporting it to cells ... | [
"releasing hormones and transporting them to cells of the body"
] |
base | Question:
On which date does North America usually experience the longest period of daylight?
Options:
(1) March 21
(2) June 21
(3) September 21
(4) December 21
Answer: June 21
Question:
The life cycle of a star includes formation, life, and death. In the Universe, where do new stars originate?
Options:
(A) from fusio... | [
"gravity"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A student throws a ball into the air. While the ball travels up, the speed of the ball decreases. What force causes the ball to slow while traveling up?
Options:
(A) electricity
(B) gravity
(C) mag... | [
"gravity"
] |
base | Question:
An agriculturalist predicts that the tomato harvest will be very good this year. Which has the greatest effect on the size of the tomato harvest?
Options:
(A) the time of day the seeds are planted
(B) the amount of fruit picked after dark
(C) the type of soil in which the crops are grown
(D) the number of tim... | [
"water pollution"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which of these will most likely harm a habitat?
Options:
(A) planting trees
(B) water pollution
(C) rainfall
(D) sunlight
Answer: | [
"water pollution"
] |
base | Question:
Which of the following is caused by a virus?
Options:
(A) ulcer
(B) malaria
(C) tuberculosis
(D) influenza
Answer: influenza
Question:
Which of these is the primary source of energy in food webs?
Options:
(A) soil
(B) sunlight
(C) producer
(D) consumer
Answer: sunlight
Question:
All living and nonliving mat... | [
"elements"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
All living and nonliving material is composed of
Options:
(1) air
(2) elements
(3) water
(4) soil
Answer: | [
"elements"
] |
base | Question:
Which of the following is an abiotic factor in a river ecosystem?
Options:
(A) dragonfly
(B) trout
(C) water
(D) frog
Answer: water
Question:
Which property would best help a student determine if two substances are made of two different elements?
Options:
(A) mass
(B) shape
(C) density
(D) volume
Answer: den... | [
"erosion"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which process best explains how the Grand Canyon became so wide?
Options:
(A) folding
(B) erosion
(C) deposition
(D) sedimentation
Answer: | [
"erosion"
] |
base | Question:
Use the information below to answer the question. The human body is composed of different systems made of specialized cells, tissues, and organs. Each of these structures has a specific function that aids in the survival of the human species. What is the primary function of the excretory system?
Options:
(A) ... | [
"fish that live in coral reefs in shallow waters"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
As global temperatures increase, certain organisms will be more affected than others. The changes associated with global warming may result in an increase in sea level. Which organisms will be affe... | [
"fish that live in coral reefs in shallow waters"
] |
base | Question:
Antarctica is a continent at Earth's south pole. Fossils of tropical fern plants were discovered in Antarctica even though these plants do not grow there today. Which conclusion does the fossil evidence best support?
Options:
(A) Millions of years ago, Antarctica was in a warmer location on Earth.
(B) Recentl... | [
"the water evaporated."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A dish of sugar water was left on a window sill. One week later, there were only sugar crystals left in the dish. The water was gone. The best explanation for the appearance of sugar crystals is
Op... | [
"the water evaporated."
] |
base | Question:
Which particles make up the mass of an atom?
Options:
(A) protons and neutrons
(B) protons and electrons
(C) neutrons and molecules
(D) electrons and molecules
Answer: protons and neutrons
Question:
How do people get energy and nutrients?
Options:
(A) breathing clean air
(B) exercising and playing
(C) gettin... | [
"lever"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Using a softball bat to hit a softball is an example of using which simple machine?
Options:
(A) pulley
(B) lever
(C) inclined plane
(D) wheel and axle
Answer: | [
"lever"
] |
base | Question:
Last year Steve was shorter than his brother. This year Steve is taller than his brother. What cell process is directly responsible for Steve's growth?
Options:
(A) diffusion
(B) mitosis
(C) osmosis
(D) respiration
Answer: mitosis
Question:
Louis Pasteur's work in the nineteenth century on pasteurization gre... | [
"recrystallize."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
When an igneous intrusion comes into contact with surrounding rock, the surrounding rock will
Options:
(A) erode.
(B) foliate.
(C) precipitate.
(D) recrystallize.
Answer: | [
"recrystallize."
] |
base | Question:
Research has shown that specialization of stem cells into specific cell types results, in part, from cell shape. What provides a specialized cell with its shape?
Options:
(A) number of mitochondria
(B) presence of a nucleus
(C) structure of the cytoskeleton
(D) salt concentration of cytoplasm
Answer: structur... | [
"Secondary Succession"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A research scientist writes a paper on the initial regrowth of a forest after a fire has damaged the entire ecosystem. Which title would be best for the paper?
Options:
(A) Primary Succession
(B) S... | [
"Secondary Succession"
] |
base | Question:
A student is pouring equal amounts of water, maple syrup, and cooking oil into a glass beaker and looking at how the layers settle. Which property of the liquids is the student most likely comparing?
Options:
(A) density
(B) mass
(C) temperature
(D) volume
Answer: density
Question:
When a baker bakes bread, ... | [
"sunlight"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Where do plants get most of the energy they need to live and grow?
Options:
(A) water
(B) soil
(C) air
(D) sunlight
Answer: | [
"sunlight"
] |
base | Question:
Which life function is the same for an amoeba as for other freshwater protists?
Options:
(A) the method used to obtain nutrients and energy
(B) the process used to constantly remove excess water
(C) the method used to detect changes in their environment
(D) the process used to remove waste products from their... | [
"The average high temperature in May is 20°C."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which is a statement about climate?
Options:
(A) The average temperature yesterday was 15°C.
(B) The temperature range today was 10°C to 20°C.
(C) The high temperature tomorrow will be 14°C.
(D) Th... | [
"The average high temperature in May is 20°C."
] |
base | Question:
Which sea otter behavior is learned?
Options:
(A) using fur to trap air for warmth
(B) cracking open clams with a rock
(C) nursing its young for six months
(D) closing its ears under water
Answer: cracking open clams with a rock
Question:
Which of these statements best describes temperature as elevation in t... | [
"kinetic energy"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
While on a movie set, a stuntman jumps off the roof of a building. As he falls toward an airbag, what is increasing?
Options:
(A) gravity
(B) wind velocity
(C) kinetic energy
(D) potential energy
A... | [
"kinetic energy"
] |
base | Question:
Which explains the relationship between hours of sunlight and seasons?
Options:
(A) the rotation of Earth on its axis
(B) the tilt of Earth's axis relative to the sun
(C) the location of Earth's orbit in the solar system
(D) the motion of the moon as it travels around Earth
Answer: the tilt of Earth's axis re... | [
"microscope"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Jessica wants to see cells in an oak tree leaf. Which tool is best for Jessica to use to see the cells?
Options:
(A) binoculars
(B) microscope
(C) reading glasses
(D) magnifying glass
Answer: | [
"microscope"
] |
base | Question:
Which plant part is described correctly?
Options:
(A) Stems make seeds.
(B) Roots absorb nutrients.
(C) Leaves absorb water.
(D) Flowers make food.
Answer: Roots absorb nutrients.
Question:
Which body systems are most involved in the response when someone stubs his or her toe?
Options:
(A) nervous and muscle... | [
"designing an investigation with repeated trials during the investigation"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Biologists conduct investigations to learn about living organisms. Which method helps reduce bias during an investigation?
Options:
(A) developing a hypothesis after collecting data in the investig... | [
"designing an investigation with repeated trials during the investigation"
] |
base | Question:
Cancer is most often the result of
Options:
(1) abnormal cell division
(2) natural selection
(3) bacterial infection
(4) biological adaptation
Answer: abnormal cell division
Question:
Which part of a plant makes sugar from carbon dioxide?
Options:
(A) stem
(B) leaf
(C) root
(D) flower
Answer: leaf
Question:... | [
"fewer predators"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which factor is most likely to cause the number of rabbits living in an area to increase?
Options:
(1) less water
(2) fewer predators
(3) lack of shelter
(4) limited food
Answer: | [
"fewer predators"
] |
base | Question:
What can be inferred from a food product advertisement that claims "30% less fat than our leading competitors"?
Options:
(A) It is a sugar-free product.
(B) It will help a person lose weight.
(C) It is the healthiest choice available.
(D) The fat content of the item is reduced.
Answer: The fat content of the ... | [
"dormant"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Seeds that remain inactive until the right conditions of light, water, and soil are present are called ___.
Options:
(A) pollen
(B) dormant
(C) flowers
(D) recycled
Answer: | [
"dormant"
] |
base | Question:
Which two properties of a crayon will stay about the same after the crayon is melted?
Options:
(A) Shape and physical state
(B) Temperature and hardness
(C) Color and mass
(D) Thickness and texture
Answer: Color and mass
Question:
Ana rolled her wagon down the ramp to reach the playground. There, she and her... | [
"the current flowing through the wire to the light bulb"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
What allows a light bulb to give off light?
Options:
(A) the current flowing through the wire to the light bulb
(B) the light bulb giving electrical energy to the battery
(C) the light bulb generat... | [
"the current flowing through the wire to the light bulb"
] |
base | Question:
The angle of a ramp is changed several times during an experiment. Which tool is needed to measure the different angles?
Options:
(A) compass
(B) protractor
(C) meter stick
(D) spring scale
Answer: protractor
Question:
Which of these had the greatest impact on the current shape of Nevada's basin and range la... | [
"vibrations"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
What causes sound?
Options:
(A) sunlight
(B) vibrations
(C) x-rays
(D) pitch
Answer: | [
"vibrations"
] |
base | Question:
Jagged mountains would most likely become rounded hills through which process?
Options:
(A) erosion
(B) deposition
(C) volcanic activity
(D) chemical change
Answer: erosion
Question:
A renewable energy source is a source that will not run out. Which is an example of the use of such a source?
Options:
(A) A c... | [
"Sunflower plant"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Photosynthesis occurs in which of these organisms?
Options:
(A) Sunflower plant
(B) Mushroom
(C) Sunfish
(D) Luna moth
Answer: | [
"Sunflower plant"
] |
base | Question:
Biologists conduct investigations to learn about living organisms. Which method helps reduce bias during an investigation?
Options:
(A) developing a hypothesis after collecting data in the investigation
(B) limiting the amount of background research before the investigation
(C) designing an investigation with... | [
"take in nutrients."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
In order for cells to grow at a normal rate, they must
Options:
(A) take in light.
(B) be specialized.
(C) take in nutrients.
(D) be of similar size.
Answer: | [
"take in nutrients."
] |
base | Question:
When a molecule is separated into its component parts, it forms
Options:
(A) compounds.
(B) atoms.
(C) protons.
(D) ions.
Answer: atoms.
Question:
Which are replenished more quickly than they are used?
Options:
(A) energy resources
(B) material resources
(C) renewable resources
(D) nonrenewable resources
Ans... | [
"carbon dioxide"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Marshall learned that plants need a substance from the air to make their own food. What does a plant take from the air in the presence of sunlight?
Options:
(A) carbon dioxide
(B) hydrogen
(C) nitr... | [
"carbon dioxide"
] |
base | Question:
The complex, three-dimensional structure of a protein is sensitive to heat because the structure is maintained by
Options:
(A) hydrogen bonds.
(B) covalent bonds.
(C) Brownian motion.
(D) magnetic fields.
Answer: hydrogen bonds.
Question:
In order to maintain good health, humans should
Options:
(A) eat foods... | [
"Millions of years ago, Antarctica was in a warmer location on Earth."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Antarctica is a continent at Earth's south pole. Fossils of tropical fern plants were discovered in Antarctica even though these plants do not grow there today. Which conclusion does the fossil evi... | [
"Millions of years ago, Antarctica was in a warmer location on Earth."
] |
base | Question:
The heath hen, an extinct small wild fowl, was a relative of the prairie chicken. Which of the following most likely caused extinction of the heath hen?
Options:
(A) overhunting
(B) stable climate
(C) plentiful food supply
(D) abundant nesting sites
Answer: overhunting
Question:
Overuse of which water resour... | [
"The Fission Theory and the Giant Impact Theory"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which two theories of Moon formation propose that much or all of the material comprising the Moon came from Earth?
Options:
(A) The Fission Theory and The Coaccretion Theory
(B) The Coaccretion The... | [
"The Fission Theory and the Giant Impact Theory"
] |
base | Question:
Which of the following will always produce a magnetic force on a nearby iron nail?
Options:
(A) a long piece of copper wire
(B) a large static electric charge
(C) an electric current
(D) an electric field
Answer: an electric current
Question:
A scientific article about the universe will most likely describe ... | [
"fair."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
When white, fluffy clouds appear in Massachusetts, the weather that day will MOST LIKELY be
Options:
(A) fair.
(B) stormy.
(C) foggy.
(D) rainy.
Answer: | [
"fair."
] |
base | Question:
Which characteristic do both the Moon and Earth share?
Options:
(A) They both have rocky surfaces.
(B) They both have active volcanoes.
(C) They both have similar atmospheres.
(D) They both have the same gravitational pull.
Answer: They both have rocky surfaces.
Question:
While hiking through Granville State... | [
"carbon, hydrogen, oxygen, nitrogen."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Plants and animals are composed of organic compounds. Which of the following are the common elements found in organic compounds?
Options:
(A) iron, oxygen, nickel, copper.
(B) sodium, potassium, go... | [
"carbon, hydrogen, oxygen, nitrogen."
] |
base | Question:
What is the source of genetic information of offspring produced by sexual reproduction?
Options:
(A) the father only
(B) the mother only
(C) the mother and the father
(D) neither the mother nor the father
Answer: the mother and the father
Question:
All organisms depend on the transfer of energy to survive. W... | [
"use the new information to update the old theory"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
New research uncovers information that proves that the data from an old theory is partially incorrect. What should the scientific community do about the old theory?
Options:
(A) remove the old theo... | [
"use the new information to update the old theory"
] |
base | Question:
The mineral quartz naturally forms in various colors. Which difference in quartz formation results in the different colors?
Options:
(A) pressure at which the processes occurred
(B) temperature at which the processes occurred
(C) chemical impurities present as the processes occurred
(D) amount of time passed ... | [
"ability to produce genetically different offspring"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which is the greatest benefit of sexual reproduction?
Options:
(A) capable of reproducing by meiosis
(B) ability to reproduce without a mate
(C) ability to produce genetically different offspring
(... | [
"ability to produce genetically different offspring"
] |
base | Question:
Small grasshoppers shed their outer covering as they grow larger. Which animal also sheds its outer covering as it grows larger?
Options:
(A) frog
(B) snake
(C) fish
(D) human
Answer: snake
Question:
What objects are affected by Earth's gravity?
Options:
(A) only objects that have mass
(B) only objects that ... | [
"type of material through which the sound travels."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
The speed at which sound waves travel depends on the
Options:
(A) distance between the vibration source and the receiver.
(B) type of material through which the sound travels.
(C) size of the objec... | [
"type of material through which the sound travels."
] |
base | Question:
Structures in the universe are grouped into large systems, each of which are made up of smaller systems. Which of the following is the largest system of which Earth is only a very small part?
Options:
(A) Jovian planets
(B) Halley's comet
(C) Milky Way galaxy
(D) Orion's belt
Answer: Milky Way galaxy
Questio... | [
"Galileo Galilei"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Which scientist is credited with discovering the first four moons of Jupiter?
Options:
(A) Galileo Galilei
(B) Albert Einstein
(C) Charles Darwin
(D) Sir Isaac Newton
Answer: | [
"Galileo Galilei"
] |
base | Question:
The purpose of thorns on a plant is most likely to
Options:
(A) help the plant to get moisture.
(B) anchor the plant in the ground.
(C) protect the plant from harm.
(D) support the stems and branches.
Answer: protect the plant from harm.
Question:
Human activity most likely contributes to which of the follow... | [
"rocks"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
During science class, a teacher explains that the samples the students are studying are made of two or more minerals. What are the students studying?
Options:
(A) gases
(B) rocks
(C) elements
(D) m... | [
"rocks"
] |
base | Question:
The instructions below outline the procedure for a demonstration. Materials: four 100 g metal blocks, each of a different metal four polystyrene foam cups, each containing 150 g of 10°C water Procedure: 1. Place the four cups of water next to each other on the lab bench. 2. Heat each block to a temperature of... | [
"winter"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
When the Northern Hemisphere is tilted away from the Sun causing the rays of light to hit Earth at large angles, which season occurs?
Options:
(A) winter
(B) spring
(C) summer
(D) fall
Answer: | [
"winter"
] |
base | Question:
Which of the following explains why elements, such as carbon and oxygen, that are used in organic molecules are not permanently removed from the environment?
Options:
(A) They are replenished by sunlight.
(B) They are cycled through ecosystems.
(C) They are replaced by volcanic eruptions.
(D) They are produce... | [
"The mountain was covered by water."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A scientist found fossils of ocean shells on a mountain top. Based on this find, which statement can be made?
Options:
(A) The climate was once colder.
(B) The shells were carried by the wind.
(C) ... | [
"The mountain was covered by water."
] |
base | Question:
Photosynthesis and respiration are both parts of which cycle?
Options:
(A) carbon cycle
(B) nitrogen cycle
(C) phosphorous cycle
(D) rock cycle
Answer: carbon cycle
Question:
Which moon phase occurs approximately 14 days after a full moon?
Options:
(A) waxing gibbous
(B) waning crescent
(C) first quarter
(D)... | [
"observing if they lack true stems, roots, or leaves"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A student sees many plants around a pond. The student can determine which plants are nonvascular by
Options:
(A) observing if they lack true stems, roots, or leaves
(B) examining the plants for spo... | [
"observing if they lack true stems, roots, or leaves"
] |
base | Question:
What instrument should be used to monitor atmospheric pressure changes as a weather system approaches?
Options:
(A) psychrometer
(B) thermometer
(C) anemometer
(D) barometer
Answer: barometer
Question:
Which process involves choosing certain organisms to reproduce with one another in order to pass on specifi... | [
"by freezing water in the cracks of rocks"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
Darryl learns that freezing temperatures may help cause weathering. Which statement explains how freezing temperatures most likely cause weathering?
Options:
(A) by freezing the leaves on trees
(B)... | [
"by freezing water in the cracks of rocks"
] |
base | Question:
The living systems of plants and animals are constantly taking in water to continue the processes of life. What eventually happens to most of that water?
Options:
(A) It is converted into hydrogen and oxygen.
(B) It is returned to the environment.
(C) It is broken down by bacterial decay.
(D) It is permanentl... | [
"The atom becomes a positive ion."
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A bond is formed when an electron is transferred from a sodium atom to a chlorine atom. What happens to the sodium atom during this process?
Options:
(A) The mass of the atom increases.
(B) The ato... | [
"The atom becomes a positive ion."
] |
base | Question:
Eyeglasses help a nearsighted person see as a result of
Options:
(A) absorption.
(B) diffraction.
(C) reflection.
(D) refraction.
Answer: refraction.
Question:
Which unit of measurement do astronomers use when measuring the distance between two stars found in the Milky Way?
Options:
(A) meter
(B) light-year
... | [
"Sampling fish populations in the lake over several years"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
A group of fish was released into a local lake. This species of fish had never lived in the lake before. Scientists want to collect data on how the lake's ecosystem is affected by the new fish. Whi... | [
"Sampling fish populations in the lake over several years"
] |
base | Question:
Glaciers are slow-moving sheets of ice found on land. What process occurs when glacial ice is heated to 5° Celsius?
Options:
(A) evaporation
(B) freezing
(C) melting
(D) precipitation
Answer: melting
Question:
A group of cells performing the same function in the body is called
Options:
(A) a tissue.
(B) an o... | [
"lead aprons"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
On a career day at school, an X-ray technician discusses her daily work with the class. Which equipment would she most likely say she uses on a regular basis to help ensure the safety of patients?
... | [
"lead aprons"
] |
base | Question:
Ned learned that light is a source of energy. Which can only result from light energy?
Options:
(A) an ice cube melting
(B) a rainbow forming
(C) water evaporating
(D) thunder booming
Answer: a rainbow forming
Question:
The speed at which sound waves travel depends on the
Options:
(A) distance between the vi... | [
"wheel and axle"
] |
instruct | Instruction: Choose the single best answer from the options. Answer with the option text only (not the letter).
Question:
In the United States, windmills have been used for farming for hundreds of years. Which simple machine is the most important part of a windmill?
Options:
(A) lever
(B) pulley
(C) inclined plane
(D)... | [
"wheel and axle"
] |
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