Earth and Space
Environmental
Life
Chemistry
Physics
100
Animal wastes contain bacteria that make organisms sick. These wastes are often washed into water supplies by storms. How might a pet owner prevent these bacteria from polluting water supplies? A. Brushing the pet daily to remove bacteria. B. Feeding pets food that produces less waste. C. Bagging the pet waste and throwing it in the trash. D. Washing the pet with shampoo to kill the bacteria.
What is bagging the pet waste and throwing it in the trash?
100
In 2003, Maryland power plants produced 56% of the electricity used in the state by burning coal and 5% of the electricity using hydropower. Which of the following statements best describes coal and water as resources? A. Both are renewable. B. Both are nonrenewable. C. Coal is nonrenewable; water is renewable. D. Coal is renewable; water is nonrenewable.
What is coal is nonrenewable; water is renewable?
100
All organisms need food to survive. Which statement best describes the purpose of food for organisms? A. Skin color B. Oxygen for life. C. Water for energy. D. Energy for growth.
What is energy for growth?
100
When combining materials to make a mixture of trail mix using raisins, peanuts, and M&Ms, the property of each material A. Is changed B. Changes slightly C. Remains the same D. Causes a chemical reaction
What is remains the same?
100
A teacher carefully places some objects into very hot water. After one minute, which item is most likely too hot to touch? A. A cloth napkin B. A metal spoon C. A plastic pencil D. A wooden stick
What is a metal spoon?
200
A student prepared a presentation to show how water changes the surface of Earth. Which presentation would best demonstrate how water changes the surface of Earth? A. A diagram of a river food web B. A graph of the amount of rainfall on a lake C. A picture of fog covering a mountain valley D. A model of a stream flowing down a hillside
What is a model of a stream flowing down a hillside?
200
Many states require vehicles to be examined and to meet safety and pollution standards. What impact might vehicle inspections have on the environment? A. The environment will not be polluted. B. The environment will become more polluted. C. Fewer pollutants released by vehicles. D. Fewer pollutants produced by older vehicles.
What are fewer pollutants released by vehicles?
200
A parent and a child share several characteristics. Both individuals are tall, have curly hair, are good cooks, and have freckles. Which of these characteristics is a learned behavior? A. Being tall B. Having curly hair C. Being a good cook D. Having freckles
What is being a good cook?
200
“Goo” is made by adding water to a cornstarch. Before the water was added, the cornstartch was powdery. When water was added, the physical properties changed. The “Goo” would run between the fingers of an open hand, but when squeezed, the “Goo” would become stiff. Based on the observations, the “Goo” has which of the following physical properties? A. Ability to conduct heat B. Ability to be attracted by magnets C. Ability to conduct electricity D. Ability to be flexible
What is the ability to be flexible?
200
Some objects are attracted by magnets. Which object is attracted by a magnet? A. An iron nail B. An ice cube C. A plastic knife D. A wooden ruler
What is an iron nail?
300
Wind changes the surface of Earth. Which of these land formations is a result of transportation and deposition by wind? A. A delta B. A glacier C. A sand dune D. A mountain peak
What is a sand dune?
300
Weather patterns sometimes result in drought. Which activity would be most negatively affected during a drought year? A. Boating B. Farming C. Hiking D. Hunting
What is farming?
300
The mountain chorus frog is an endangered species in Maryland. In addition to the loss of habitat, what most likely caused this frog population to decline? A. An increase in a food source B. More frog breeding grounds C. Native wetlands preservation D. Poisons dissolved in the water
What are poisons dissolved in the water?
300
Chemical pesticides are sometimes sprayed on crops to kill insects that eat the crops. People have different viewpoints about the use of pesticides on crops. What might be a concern about using pesticides on the crops? A. Will the food ripen? B. Will the food stay fresh? C. Will the food harm humans? D. Will the food harm bugs in the home?
What is will the food harm humans?
300
Some objects conduct electricity. Which object is the best conductor of electricity? A. A metal fork B. A wood spoon C. A plastic comb D. A rubber eraser
What is a metal fork?
400
A student filled three beakers, each with 50 milliliters of liquid water. The student cooled Beaker 1 to form ice. The student heated Beaker 2 to form water vapor (gas). Beaker 3 remained at room temperature. What process takes place when liquid water changes to a vapor (gas)? A. Condensation B. Evaporation C. Freezing d. Melting
What is evaporation?
400
Wind is a natural resource that benefits the southeastern shore of the Chesapeake Bay. How could these winds best benefit humans? A. The winds could blow oil spills into the bay. B. The winds could be converted to fossil fuel. C. The winds could blow air pollution toward land. D. The winds could be converted to electrical energy.
What is the wind could be converted to electrical energy?
400
The snowshoe hare sheds its fur twice a year. In the summer, the fur of the hare is brown. In the winter, the fur is white. Which of these statements best explains the advantage of shedding fur? A. Shedding fur keeps the hare clean. B. Shedding fur helps the hare move quickly. C. Shedding fur keeps the hare's home warm. D. Shedding fur helps the hare blend into its habitat.
What is shedding fur helps the hare blend into its habitat?
400
Materials combine chemically or physically. Which materials form a new substance when chemically combined? A. Salt and pepper B. Water and sugar C. Iron nails and pennies D. Baking soda and vinegar
What is baking soda and vinegar?
400
A student heated a pan of soup on a stove. While stirring the soup with a metal spoon, the student noticed the spoon became very warm. What is the most likely reason the spoon became warm? A. The stirring action heated the spoon. B. Warm air in the room heated the spoon. C. Heat from the soup was transferred to the spoon. D. The student's hand transferred heat to the spoon.
What is heat from the soup was transferred to the spoon?
500
Planets in our solar system have different solar years. Which statement explains the cause of an Earth solar year? A. Earths rotation around the sun. B. Earths revolution around the sun. C. The suns rotation around Earth. D. The suns revolution around Earth.
What is the Earths revolution around the sun?
500
A student notices a paw print while walking in a park. The paw print could be considered a fossil if the print was in A. Rock B. Topsoil C. Thick mud D. Loose sand
What is rock?
500
Some foods that humans eat, such as corn and peas, are actually seeds from plants. What best describes the role of humans in a food web containing these plants? A. A consumer B. A decomposer C. A producer D. A scavenger
What is a consumer?
500
Many natural resources are found in Maryland and the surrounding area. Some of these natural resources are renewable and some are nonrenewable. People use both kinds of resources in daily activities. Using natural resources often produces waste products. Which of these natural resources found in Maryland is nonrenewable? A. Coal B. Soil C. Water D. Wood
What is coal?
500
A hydrologist studies the location, movement, and quality of water. A hydrologist recognizes the importance that water exists as A. A solid, a liquid, and a gas (vapor) B. A solid and a liquid C. A solid and a gas (vapor) D. A solid only
What is a solid, a liquid, and a gas (vapor)?
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