Question: Which of the following are necessary for a generator to produce electricity?

Answer Options:
• A. Magnets and conducting wires
• B. Natural gas and pistons
• C. Steam and steam pipes
• D. Moving water and a water wheel

Answer: A

 

Question: An astronaut travels to the Moon, where the magnitude of the force of gravity is one-sixth the magnitude of the force of gravity on Earth. On the Moon, which of the following statements about the astronaut is true?

Answer Options:
• A. The astronaut’s mass is one-sixth of his mass on Earth.
• B. The astronaut’s weight is one-sixth of his weight on Earth.
• C. The astronaut’s mass is six times his mass on Earth.
• D. The astronaut’s weight is six times his weight on Earth.

Answer: B

 

Question: A reaction occurs between two liquid substances in a sealed container. Which of the following best predicts what will happen to the mass of the sealed container and its contents over the course of the reaction?

Answer Options:
• A. If the reaction produces a gas, the mass will decrease.
• B. If the reaction produces a solid, the mass will increase.
• C. If the reaction produces a liquid, the mass will increase at first and then decrease.
• D. No matter what the reaction produces, the mass will remain unchanged.

Answer: D

 

Question: A neutral atom always contains an equal number of which of the following?

Answer Options:
• A. Protons and electrons
• B. Protons and neutrons
• C. Neutrons and electrons
• D. Protons and alpha particles

Answer: A

 

Question: The speed of light in empty space, that is, a vacuum, is 300,000 km/s. In water, the speed of light is

Answer Options:
• A. greater than 0 but less than 300,000 km/s
• B. 300,000 km/s
• C. greater than 300,000 km/s

Answer: A

 

Question: A metal spoon that heats up while sitting in a bowl of hot soup is an example of heat transfer due to

Answer Options:
• A. conduction
• B. convection
• C. radiation
• D. diffusion

Answer: A

 

Question: The pitch of a sound is related to which of the following properties of the sound wave?

Answer Options:
• A. Speed
• B. Frequency
• C. Amplitude
• D. Energy

Answer: B

 

Question: Which of the following is always true of a chemical change?

Answer Options:
• A. Color, shape, or texture is altered.
• B. Mass is increased.
• C. A new substance is formed.
• D. Gas or vapor is generated.

Answer: C

 

Question: Which of the following best predicts what will happen when white light is used to illuminate a green object?

Answer Options:
• A. The object will mostly reflect the green part of the white light.
• B. The object will mostly absorb the green part of the white light.
• C. The object will appear black.
• D. The object will appear white.

Answer: A

 

Question: Which of the following is true about the model of the atom?

Answer Options:
• A. The nucleus has a negative charge
• B. The nucleus is neutral with no charge
• C. The electrons and protons are located in the nucleus
• D. The neutrons and protons are located in the nucleus

Answer: D

 

Question: Which of the following best explains why an ice skater is able to coast forward at a nearly constant speed in a straight line across the ice?

Answer Options:
• A. The force of friction on the blades of the skates is very large.
• B. The force of friction on the blades of the skates is very small.
• C. The ice exerts a constant forward force on the blades of the skates.
• D. The buoyant force on the blades of the skates is equal to zero.

Answer: B

 

Question: Height (meters): 20, 80, 180, 320; Time (seconds): 2, 4, 6, 8. What type of graph does this data form (with time on the y-axis and height on the x-axis)?

Answer Options:
(Implied choices include a parabolic/quadratic graph and a square root graph)

Answer: Square root graph

 

Question: Which THREE of the following agricultural practices are most likely to have a negative impact on the environment?

Answer Options:
• A. Increasing the amount of fertilizer applied to a field to maximize crop yields
• B. Providing a field with excessive amounts of water to maintain ground saturation
• C. Applying nonselective herbicides to a field at the end of the growing season to eliminate weeds
• D. Planting crops in a field with minimal disturbance of the surface soil to reduce soil erosion

Answer: A, B, C

 

Question: Which TWO of the following are powered most directly by the Sun’s energy?

Answer Options:
• A. Surface currents in the ocean
• B. Volcanic eruptions
• C. Tectonic plate movements
• D. Convection in the atmosphere

Answer: A, D