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Eighth Grade (Grade 8) Physics Questions

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Grade 8 Heat Transfer
Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot like the end in the hot water?
  1. The hot water causes a chemical reaction to take place in the spoon.
  2. The heat from the hot water is conducted to the spoon handle.
  3. The hot water heats the air surrounding the upper part of the spoon.
  4. The hot water causes a physical change in the spoon handle.
Grade 8 Matter
During a change of state, such as melting or freezing, a substance's temperature
  1. increases
  2. decreases
  3. remains constant
  4. increases during melting and decreases during freezing
Grade 8 Energy and Momentum
Any energy that is stored is called
  1. Kinetic Energy
  2. Cooking energy
  3. Potential energy
  4. Thermal energy
  5. Sound Energy
  6. Electrochemical Energy
Grade 8 Waves and Sound
We measure the frequency of a wave in
  1. Meters
  2. Hertz
  3. Meters per second
  4. Hertz per second
Grade 8 Energy and Momentum
As a pendulum swings back and forth
  1. potential energy is transformed into kinetic energy.
  2. kinetic energy is transformed into potential energy.
  3. at the lowest part of its swing, its energy is all kinetic.
  4. at the end points of its swing, its energy is all potential.
  5. all of the above
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