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Ninth Grade (Grade 9) Energy and Momentum Questions

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Grade 9 Energy and Momentum
Which of the following best describes energy?
  1. It is the ability to cause change
  2. It can never be created nor destroyed
  3. It can be transferred from one object to another or transformed into different forms
  4. All of the above
Grade 9 Energy and Momentum
What unit do we use to measure power?
  1. Newton
  2. Joule
  3. Watt
  4. Kelvin
Grade 9 Energy and Momentum
What units do we use to measure work?
  1. Newtons
  2. Watts
  3. Meters
  4. Joules
Grade 9 Energy and Momentum
What form of energy is found in food?
Grade 9 Energy and Momentum
At what point in a waterfall, do the drops of water contain the most gravitational potential energy?
  1. At the top before they start falling
  2. When they first begin moving
  3. When they are halfway to the bottom
  4. When they reach the bottom of the fall
Grade 9 Energy and Momentum
What are two types of potential energy?
Grade 9 Energy and Momentum
The mechanical energy of a coconut falling from a tree                 .
  1. increases
  2. decreases
  3. remains constant
Grade 9 Energy and Momentum
What potential energy is acquired by a hammer with a mass of 0.75 kg when raised 0.35 m?
  1. 2.57 J
  2. 0.2625 J
  3. 2.14 J
  4. None of the Above
Grade 9 Energy and Momentum
Which of the following could not be true?
  1. A machine that multiplies the force you put into it
  2. A machine that increases the work you put into it
  3. A machine that decreases the distance you have to put in
  4. A machine that puts out less work than you put in
Grade 9 Energy and Momentum
You can only measure power when work is being done.
  1. True
  2. False
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