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Question: Which of the following is the most important safety practice when using a rock hammer on a geology field trip?
Answer: wear goggles while breaking rocks |
Question: To which organ system do the esophagus, liver, pancreas, small intestine, and colon belong?
Answer: digestive system |
Question: When sodium hydroxide reacts with a copper nitrate solution, the reaction vessel needs to be kept on ice to slow down the reaction. What best describes this reaction?
Answer: an exothermic reaction that releases energy |
Question: Scientists measured the patterns of spectral lines given off by distant galaxies and concluded that almost all of these galaxies are moving away from Earth. What did the scientists observe directly?
Answer: a shift toward longer wavelengths of light |
Question: When a multicellular organism is damaged, it will repair itself as
Answer: the cells work together. |
Question: Genes are located on chromosomes which are composed of
Answer: DNA. |
Question: Which of the following best describes the number of chromosomes in a normal human liver cell?
Answer: 23 pairs of chromosomes |
Question: A student measures the growth of a group of plants given different amounts of fertilizer. Which data display should the student use to compare the growth of the plants?
Answer: line graph |
Question: What is a large buildup of moving ice and snow called?
Answer: glacier |
Question: Which of these conditions would most likely be shown in the fossil record as a reason for mass extinctions?
Answer: falling sea levels and global cooling |
Question: One of the functions of a topographic map is to
Answer: show the surface features of an area. |
Question: Reptiles become more active as the day gets warmer. This is because
Answer: their body temperature changes with the environment. |
Question: Which scientific model could be used to predict the properties of an element?
Answer: Periodic Table |
Question: Some of the thermal structure of Earth is the result of a combination of chemical composition, temperature, and pressure. Which is a boundary that best demonstrates a contact point between layers having relatively the same temperature and chemical composition?
Answer: inner core and outer core |
Question: A hillside along a highway has exposed layers of undisturbed sedimentary rock. Which method would be best for scientists to use to determine the relative age of these sedimentary rock layers?
Answer: apply the law of superposition |
Question: What are petri dishes used for in a lab?
Answer: growing bacteria in a controlled setting |
Question: How do most fish get the oxygen they need to survive?
Answer: Using their gills, they take in oxygen that is dissolved in water. |
Question: Miranda's neighbors have an apple tree in their yard. What is the source of energy for the apple tree?
Answer: sunlight |
Question: Some types of trees are able to survive the heat of a forest fire. Which of the following characteristics would best help a tree survive a fire?
Answer: thick bark |
Question: Which of the following would most likely happen if grasses and shrubs were removed from a rural Massachusetts ecosystem?
Answer: There would be a decrease in food energy produced by the ecosystem. |
Question: In 2004, Maryland recycled more than 35% of all of the waste the state produced. Which of these benefits does recycling provide to Maryland?
Answer: less trash sent to landfills |
Question: A student finds a round, smooth pebble on a beach. Which action made the pebble smooth?
Answer: waves moving |
Question: The position of the liver in the circulatory system maximizes its ability to filter out harmful chemicals as soon as they enter the bloodstream. Blood travels to the liver from the
Answer: digestive system. |
Question: A student recorded the amount of rain that fell in one year in his city. What is the best way for him to organize his information?
Answer: graph |
Question: While Anna was testing a circuit, she dropped a light bulb. What is the safest thing Anna can do?
Answer: tell her teacher that she broke the bulb |
Question: Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water?
Answer: Less sugar is visible. |
Question: The direction water flows in a river depends on
Answer: the slope of the land |
Question: A soccer player kicks a soccer ball across a field. Which factor has the most effect on the distance the soccer ball travels?
Answer: the force of the kick |
Question: Many cells have a nucleus that contains chromosomes. These chromosomes carry genes that are composed of
Answer: DNA molecules |
Question: Which items would best protect a group of students while investigating a forest ecosystem?
Answer: long pants and long-sleeved shirts |
Question: A student needs to find the mass of an atom. The numbers of which atomic particles determines the mass of the atom?
Answer: both its protons and neutrons |
Question: Which activity is necessary for humans to maintain good health?
Answer: resting |
Question: A student completes several tasks while making breakfast. During which task does the student make a solution?
Answer: adding sugar to tea |
Question: Which natural event can dry out plants and cause wildfires?
Answer: drought |
Question: Where would nitrogen most easily be found in the nitrogen cycle?
Answer: in animal waste |
Question: Before it rains water must collect in
Answer: clouds. |
Question: Which atmospheric phenomena are created by the interaction of charged particles with Earth's magnetosphere?
Answer: auroras |
Question: Which of these BEST describes the way a feather feels?
Answer: Soft |
Question: A tight metal lid on a jar of pickles may loosen when it has been held in hot water. This is because the hot water causes the
Answer: metal lid to expand more than the glass jar expands |
Question: A scientist reads about an experiment conducted by a researcher.The scientist conducts the same experiment and collects data but this data contradicts what was published by the researcher. What should the scientist do since the data from the two experiments is contradictory?
Answer: Repeat the experiment to check the data collected. |
Question: The organisms that convert solar energy and raw materials into food are
Answer: producers. |
Question: Large amounts of metals like iron and aluminum are found in
Answer: rocks |
Question: Which of these occurs if myosin fails to bind to actin during muscle contraction?
Answer: The muscle cells will remain relaxed. |
Question: How are cells able to produce the proteins required by certain conditions?
Answer: by expressing existing genes |
Question: An organism's cells include organelles and a cell wall. In which taxonomic group or groups might the organism be classified?
Answer: plants, fungi, or protists |
Question: Which of these structures produces male gametes in humans?
Answer: testes |
Question: The length of a year is equivalent to the time it takes for one
Answer: revolution of Earth around the Sun |
Question: Which of these organisms has cells with cell walls?
Answer: A pine tree |
Question: Which is the result of mitosis?
Answer: two identical nuclei |
Question: Which of these materials on the walls of a room would work best to keep sound from making an echo?
Answer: carpet |
Question: The starch and water molecules in potato cells are stored in what organelle?
Answer: vacuole |
Question: Which animals live part of their lives in water and part on land, and go through metamorphosis?
Answer: amphibians |
Question: A student puts two identical plants in the same type and amount of soil. She gives them the same amount of water. She puts one of these plants near a sunny window and the other in a dark room. This experiment tests how the plants respond to
Answer: light |
Question: Humans need food to grow and survive. Food that is not used immediately by the body for energy is
Answer: stored for future use |
Question: What structure surrounds the cell and regulates materials that enter and leave the cell?
Answer: cell membrane |
Question: In order for boulders to become sediments, the boulders must first be
Answer: weathered and eroded. |
Question: During which stage of an insect's life cycle does the female lay eggs?
Answer: adult |
Question: When a dog smells food and begins drooling, it is responding to an external stimulus. Which of these describes a response to an internal stimulus?
Answer: A person eats spoiled food and vomits. |
Question: Which is an example of melting?
Answer: Butter changing into liquid in a warm pan |
Question: Students perform an investigation designed to measure the daily growth of a bean plant. Which should the students do every day of this investigation?
Answer: record data |
Question: Ice cream in a bowl changed from solid to liquid in a few minutes. Which of the following most likely caused this change?
Answer: Heat was added to the ice cream. |
Question: The change in the use of one model of the solar system to the use of another model resulted in major changes in science and society. Which two scientists produced the earlier and later models, respectively?
Answer: Ptolemy and Copernicus |
Question: An atom with a +1 charge has
Answer: lost an electron. |
Question: Which is an example of a single-celled organism?
Answer: amoeba |
Question: The Great Ocean Conveyer ocean current system runs north through the Atlantic from the equatorial region. If this current got disrupted, North American and European climates would become
Answer: colder. |
Question: Which region of the Milky Way contains a population that consists mostly of old stars?
Answer: the halo |
Question: When a switch to a ceiling fan is turned on, electrical energy is being transformed into
Answer: mechanical energy. |
Question: An agricultural scientist, George Washington Carver, is most famous for his research on
Answer: peanuts. |
Question: A student pours a clear liquid from a test tube into a beaker with a clear liquid already in it and notices that the mixture turns pink. The student infers the two clear liquids are different. This inference is a result of
Answer: student observations. |
Question: In what leaf structure is photosynthetic tissue found?
Answer: mesophyll |
Question: The crude oil extracted today was formed millions of years ago from the fossilized remains of algae and other tiny marine organisms. Most parts of the organisms decomposed soon after they died. Which biomolecules decomposed more slowly and became the basis of crude oil?
Answer: fatty acids |
Question: Temperatures below freezing are expected overnight. What might be done to protect plants growing outside?
Answer: cover them |
Question: Prolonged exercise stimulates muscle cells to absorb sugar from the blood. This mechanism reduces stress placed on the body by signaling the body to produce
Answer: insulin. |
Question: Which geologic feature is evidence that the North American plate once collided with the Eurasian and African plates?
Answer: the Appalachian Mountains |
Question: During an experiment, a student reports that a liquid turned green when mixed with another liquid. This is an example of
Answer: an observation |
Question: Which of the following causes a chemical change?
Answer: lemon juice added to milk |
Question: Which human organ system exchanges gases with the environment?
Answer: respiratory |
Question: Improvements in geological observation technologies have made it easier for scientists to locate resources in Earth's crust. These technologies have allowed for an increase in availability of which resource?
Answer: fossil fuel |
Question: An engineer constructs a prototype from wood. Which of the following is the best tool for the engineer to use to make the prototype's surface smooth?
Answer: sandpaper |
Question: If left in the sunshine, water in an open jar will
Answer: evaporate. |
Question: In some locations, squirrels sleep for long periods of time during the winter months. Which of the following most likely causes these squirrels to sleep for long periods of time?
Answer: decrease in temperature |
Question: Which of the following helps the body to cool down?
Answer: sweating |
Question: The brown fur of the arctic hare turns white in winter. How does this color change most likely help the arctic hare?
Answer: It helps the animal hide from predators. |
Question: A group of students found metamorphic rocks near a campsite. The presence of metamorphic rocks is most likely evidence of
Answer: high pressure |
Question: As water vapor condenses into liquid, which of the following can be formed?
Answer: clouds |
Question: Which of these particles, when found in soil, contributes most to the water retention in soil?
Answer: clay |
Question: Which of the following forms of energy is released or absorbed in most chemical reactions?
Answer: heat energy |
Question: Which of these must occur for sediments to form new rock?
Answer: recrystallization |
Question: A student wants to find the most accurate account of a scientific discovery that took place within the past three months. In which of these sources should the student look?
Answer: science journals |
Question: What is taken in by the leaves of a tree so it can make its own food?
Answer: sunlight |
Question: Radio signal interruption sometimes causes a humming or buzzing sound. These sounds are most likely caused by
Answer: electromagnetic waves. |
Question: Students planned an investigation that included adding a quantity of vinegar to a small amount of baking soda. Which is the best tool to measure the volume of the liquid vinegar used in the investigation?
Answer: graduated cylinder |
Question: Garrett collected some large rocks from a stream near his home. He measured the rocks on a balance. When he records the mass of the rocks, which units should Garrett use?
Answer: kilograms |
Question: Which of the statements is the most accurate in describing the chemical equation shown below? 2H_{2}(g) + O_{2}(g) -> 2H_{2}O(g) + energy
Answer: Energy is released. |
Question: A female dog is having puppies. She has black fur, brown eyes, and a curly tail. She can sit, bark, and roll over on command. Which set of traits can the female dog's puppies inherit?
Answer: brown eyes, black fur |
Question: Scientists estimate that Maryland contains more than 850 million tons of coal. Coal is most commonly used to produce ___.
Answer: electricity |
Question: Large populations of tortoises inhabited the Galapagos Islands before humans. When humans settled on the islands and introduced goats, the number of tortoise declined. What is most likely the explanation for the decrease in the tortoise population?
Answer: Goats compete with tortoises for vegetation. |
Question: Hereditary information is transmitted from parents to offspring through
Answer: genes. |
Question: Which device converts kinetic energy into electrical energy?
Answer: generator |
Question: Which behavior is a learned behavior?
Answer: eating with a fork |
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