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Question: A dung beetle is an insect that gathers waste from animals, rolls it into a compact ball, lays eggs in it, and buries it in the soil. This gives the eggs a warm, safe place to hatch and provides a food source for the developing larvae. Which impact does the dung beetle most likely have on its ecosystem?
Answer: It helps return nutrients to the soil. |
Question: After playing outside on a cold day, Jaime went inside to wash his hands. Although the water was normal temperature, he noticed that it felt warmer than usual. What would explain this phenomenon?
Answer: The water from the faucet had a higher temperature than his skin. |
Question: What is the relationship between tissues and organs?
Answer: Organs are made from different types of tissues. |
Question: What will be the most likely result for some species of animals with the continued burning of rain forests in Africa?
Answer: destruction of their habitats |
Question: Earthworms live underground in the soil. As they move through the soil, they create tunnels. The tunnels help improve the soil. Plants grow better in soil that has earthworms. Which statement explains how earthworm tunnels help plants?
Answer: Earthworm tunnels loosen the soil so plant roots can easily grow |
Question: Which tools are best used to determine the speed of a turtle as it walks along a path?
Answer: Stopwatch and meter stick |
Question: Which tool would a student use to measure wind speed?
Answer: anemometer |
Question: Why would explorers use a compass when traveling to unknown lands?
Answer: to locate a direction to travel |
Question: Which measurement tool is used to find the volume of a small piece of granite?
Answer: graduated cylinder |
Question: What form of energy causes an ice cube to melt?
Answer: heat |
Question: Which characteristic is most beneficial for an animal living on a snowy mountain?
Answer: thick fur |
Question: Which of the following is a property of CO2 gas?
Answer: It is colorless. |
Question: Which rapid changes can be caused by storms?
Answer: landslides and flooding |
Question: Which is an example of a chemical reaction?
Answer: nails rusting |
Question: Which unit of measurement can be used to describe the length of a desk?
Answer: centimeters |
Question: The incompleteness of the fossil record results primarily from which phenomenon?
Answer: the rarity with which organic remains are exposed to fossil-forming conditions |
Question: A student conducts an investigation. In order to make a valid conclusion, she must
Answer: have a testable hypothesis. |
Question: The bonding of oxygen to red blood cells is important to the body because it enables the body to
Answer: perform aerobic respiration in cells. |
Question: Some of Earth's water is stored underground in porous rock formations known as aquifers. Which of these could use up groundwater in aquifers?
Answer: excessive pumping from wells |
Question: All plants and animals have mechanisms that
Answer: transport nutrients |
Question: Which is the best tool to measure the angles of a triangular object?
Answer: a protractor |
Question: All living organisms are dependent on plants because plants
Answer: are producers |
Question: Compared to other stars in our galaxy, which is the best description of our Sun?
Answer: average size, average temperature |
Question: While studying the relationship between number of trees and amount of atmospheric oxygen, which of the following would be most important to take into account?
Answer: contributions to atmospheric oxygen from sources other than trees |
Question: A student is working on a science project display for the school science fair. To best communicate why her conclusions are valid, what should be included on the display?
Answer: a complete write-up of her experimental method and data collected |
Question: Which of the following describes asexual reproduction?
Answer: binary fission in an amoeba |
Question: Which scientist is known for his genetics experiments with pea plants?
Answer: Gregor Mendel |
Question: On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?
Answer: sunny |
Question: What determines if twins are identical?
Answer: their genes |
Question: Which of these processes is a conversion made by solar panels?
Answer: radiant energy to electrical energy |
Question: In fruit flies, red eyes are dominant over sepia eyes. A male with red eyes is crossed with a female with sepia eyes producing first generation offspring that all had sepia eyes. What does this indicate about the flies that were crossed?
Answer: The male is heterozygous and the female is homozygous recessive for the trait. |
Question: Acid rain caused by industrial pollution greatly reduces the number of trees in a forested region that is home to a particular species of bird. How might this decrease in the number of trees most likely affect this bird population?
Answer: The population will decrease due to lack of resources. |
Question: Which of these is the main function of a cell wall?
Answer: To provide support |
Question: Which sentence about the periodic table of elements is true?
Answer: Metals are found on the left side of the periodic table. |
Question: Salt concentration, water temperature, plankton, and the whale shark might all be used in a description of an ocean
Answer: ecosystem. |
Question: Rocks can be classified many different ways, including as igneous, metamorphic, and sedimentary. This classification is based on the
Answer: origin of the rocks. |
Question: A mountain range has hills around its edges. How are the mountains and hills alike?
Answer: Both are taller than the land around them. |
Question: Human muscle cells need nutrients and oxygen during exercise. The human body is able to meet the needs of the muscle cells during exercise by increasing
Answer: circulation. |
Question: Phyllis investigated what happened when she added some different substances to water. Which substance can combine with water to form a solution?
Answer: sugar |
Question: Fossil fuels are considered a nonrenewable resource because they
Answer: take a long period of time to form. |
Question: A student is growing some plants for an experiment. She notices small white spots on the leaves. Which tool should she use to get a better look at the spots?
Answer: hand lens |
Question: Why are seals able to live off the coast of Antarctica while frogs, snakes, and panthers are not?
Answer: Seals have fur and blubber. |
Question: How are the functions of a carbohydrate and a lipid similar?
Answer: Both are a source of energy. |
Question: Traveling in opposite directions, buses A and B are passing each other at the relative speed of 25 km/h, while a passenger on bus A walks toward the back of the bus at the speed of 5 km/h. What is the velocity of the passenger on bus A relative to bus B?
Answer: 20 km/h in the direction of bus A |
Question: A student drops a ball. Which force causes the ball to fall to the ground?
Answer: gravity |
Question: Hydrogen is located on the left side of the periodic table in the same column as the alkali metals, but it has characteristics of a nonmetal. Which of the following is a physical property of hydrogen?
Answer: Hydrogen is a gas at room temperature. |
Question: In an experiment, a scientist named Pavlov rang a bell before he fed his dogs, which made the dogs drool. Soon the dogs would drool when they heard the bell, even if they did not receive any food. What type of response did the dogs exhibit?
Answer: a learned behavior |
Question: Which invention will best help people travel quickly to far away places?
Answer: airplane |
Question: What is an environmental threat posed by oil and gas acquisition and transport that is not posed by the acquisition and transport of the energy resources uranium, and wood?
Answer: pipeline leaks |
Question: Some plant species are more tolerant of acidic soil than others. The tolerant species are favored in areas affected by which consequence of human activity?
Answer: mixing of pollutants with rain |
Question: Which resource has the most potential for production of renewable electric energy?
Answer: geothermal |
Question: A layer of solid brittle rock comprises the outer 100 kilometers of Earth. This layer, which contains both the crust and the upper mantle, is called the
Answer: lithosphere. |
Question: During its lifetime, which object is known to change in brightness, color, and temperature?
Answer: star |
Question: What causes a free falling object to accelerate?
Answer: gravity |
Question: What is the main source of energy that drives all weather patterns?
Answer: the Sun |
Question: What is one factor that contributes to seasons occurring in New York State?
Answer: the tilt of Earth on its axis |
Question: Which cell part is correctly paired with its function?
Answer: nucleus-controls cell activities |
Question: A meeting of scientists, called a symposium, occurs every year to share recent research about the atmosphere of Earth. This symposium mainly serves which purpose in science?
Answer: to discuss the meaning of new discoveries |
Question: A wind turbine primarily uses which type of energy?
Answer: mechanical |
Question: A rubber band will make a sound when it is
Answer: vibrated. |
Question: What would a warm air mass over the ocean most likely cause?
Answer: rainfall |
Question: The Moon is visible to observers on Earth because of
Answer: reflected sunlight |
Question: Which illness is always caused by an infection?
Answer: influenza |
Question: Jonny climbed an apple tree. How are Jonny and the apple tree similar to each other?
Answer: Both are made of cells. |
Question: What are the names of the products in the chemical equation shown below? HCl + NaHCO_{3} -> NaCl + CO_{2} + H_{2}O
Answer: sodium chloride, carbon dioxide, and water |
Question: A ball is tossed up in the air and it comes back down. The ball comes back down because of
Answer: gravity |
Question: Timber companies can best manage the number of trees in forests by
Answer: planting trees to replace what they cut down. |
Question: The formation of the Himalayan Mountains is one example of land features caused by compressive forces. Which action most likely led to the formation of these mountains?
Answer: colliding plates |
Question: What abiotic factor would most likely signal a population of birds that it is time to migrate from north to south?
Answer: decrease in sunlight |
Question: A greenhouse is used as a model of the atmosphere. Which of the following cannot be demonstrated by the model?
Answer: changes in greenhouse gases |
Question: A light bulb manufacturer claims its light bulb is "twice as bright" per unit of electrical energy consumed as the leading light bulb. If this claim is correct, what factor must be accurately compared between the two bulbs?
Answer: how much heat each bulb releases |
Question: In the 17th century, Gregor Mendel crossed pea plants with different traits and observed the results in their offspring. To which of these did Mendel contribute most directly with his work?
Answer: science of heredity and variation |
Question: How does the appearance of a constellation change during the night?
Answer: Its position appears to shift relative to the horizon. |
Question: The freezing and thawing action of water affects a rock by
Answer: gradually breaking down the rock into smaller pieces. |
Question: Delilah put a container of water in the freezer and left it there overnight. The next morning she saw that the water in the container had changed to ice. Which of the following statements best explains why the water changed to ice?
Answer: Heat was taken away from the water. |
Question: Earth's rotation (turning on its axis) causes
Answer: day and night. |
Question: Which of the following climates has cold winters and hot summers?
Answer: temperate |
Question: What form of energy is being used when a person pushes a wooden block across the floor?
Answer: mechanical |
Question: Which action is an example of good water management?
Answer: turning off the faucet when brushing teeth |
Question: An Earth year is the length of time it takes for
Answer: Earth to revolve once around the Sun |
Question: Which land form results when carbonic acid in groundwater seeps through rock and dissolves limestone?
Answer: caverns |
Question: Which part of a DNA molecule represents encoded information?
Answer: guanine |
Question: Early scientists most likely saw a discharge of electricity for the first time when observing a
Answer: lightning storm |
Question: In humans, the amount of sugar in blood is controlled by the release of a hormone called insulin. This process is an example of
Answer: regulation |
Question: It is necessary to add a day to the calendar every four years because
Answer: the revolution of Earth is not exactly 365 days. |
Question: Which tool would be best to measure the length of a butterfly?
Answer: metric ruler |
Question: Scientists invented a liquid that removes grease and keeps the skin soft. How could this discovery most likely be used?
Answer: to improve dish soap |
Question: The first step in the water cycle is evaporation. What gives water the energy to evaporate?
Answer: Sun |
Question: On a warm sunny afternoon, ocean water splashed onto a rock. A short time later, the rock was dry. Which statement best explains what happened to the water on the rock?
Answer: Heat caused the water to become a gas. |
Question: Which is a nonrenewable natural resource that is used to make electrical energy?
Answer: coal |
Question: Which process initiates the passage of half of a parent's DNA to offspring?
Answer: meiosis |
Question: Which resource provides the minerals plants need to grow?
Answer: soil |
Question: At what time on a sunny day will the shadow of the school's flagpole be the shortest?
Answer: noon |
Question: Animals get energy for growth and repair from
Answer: food |
Question: A flower produces seeds that fall to the ground and grow into new plants that produce more flowers. The seeds begin to grow by the process of
Answer: germination. |
Question: A rock has most likely traveled a long distance from its place of origin if it is
Answer: rounded and smooth. |
Question: Which of the following best explains why the tectonic plates of Earth move?
Answer: heat convection from the mantle |
Question: Over a long period of time, a rocky volcanic island that previously did not support any form of life got transformed into a dense forested region. Which of these species is most likely to have been the pioneer species that initiated this transformation?
Answer: lichens |
Question: The formation of coal deposits occurred over millions of years. Which feature was most responsible for these deposits?
Answer: swamps with dense vegetation |
Question: A teacher is performing a demonstration about static electricity for his class by rubbing a balloon against a wool sweater. The balloon sticks to the wool sweater. Which particles are exchanged during the demonstration?
Answer: electrons |
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