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Seventh Grade (Grade 7) Mechanics Questions

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Grade 7 Energy and Momentum
Which of the following is breaking the law of conservation of energy?
  1. Energy can change form
  2. Energy can be destroyed
  3. Energy can be changed from chemical to heat
  4. Energy can be useful
Grade 7 Forces and Motion
How would the measurable properties of a golf ball change if it were moved from Earth to the Moon?
  1. It would have the same mass, but a different weight.
  2. It would have the same weight, but a different mass.
  3. It would have the same density, but a different mass.
  4. It would have the same mass, but a different density.
Grade 7 Forces and Motion
Who discovered gravity?
  1. Edwin Hubble
  2. Isaac Newton
  3. Thomas Jefferson
  4. Albert Einstein
Grade 7 Forces and Motion
At a speed of 7.5 m/s, how far can you run in 40 seconds?
  1. 5.3 m
  2. 0.1875 m
  3. 300 m
  4. 47.5 m
Grade 7 Energy and Momentum
What is the unit for work?
  1. joule
  2. joule per second
  3. newton
  4. watt
Grade 7 Energy and Momentum
What is power?
  1. the strength of someone or something
  2. the force that is used
  3. the work that is done
  4. the rate at which work is done
Grade 7 Forces and Motion
Which of the following is not a projectile?
  1. a satellite
  2. a thrown ball
  3. a ball on the ground
  4. a soaring arrow
Grade 7 Energy and Momentum
The unit to measure power is meters.
  1. True
  2. False
Grade 7 Energy and Momentum
Potential energy is                energy.
  1. stored
  2. motion
  3. speed
  4. mass
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