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Ninth Grade (Grade 9) Energy and Momentum Questions

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Grade 9 Energy and Momentum
Walking converts what type of energy into mechanical energy?
  1. chemical
  2. electromagnetic
  3. nuclear
  4. thermal
Grade 9 Energy and Momentum
Fossil fuels currently account for the majority of the world´s energy use because they are                                             .
  1. distributed evenly throughout the world
  2. nonpolluting
  3. relatively inexpensive and readily available
  4. renewable energy resources
Grade 9 Energy and Momentum
One watt equals one                 .
  1. newton
  2. newton-meter
  3. meter per second
  4. joule per second
Grade 9 Energy and Momentum
If no friction acts on a diver during a dive, then which of the following statements is TRUE?
  1. The total mechanical energy of the system increases
  2. Potential energy can be converted into kinetic energy but not vice versa
  3. (KE + PE) beginning = (KE + PE) end
  4. all the above
Grade 9 Energy and Momentum
Jestin built a ramp to help move stuff up into the back of his scary van. If he uses the ramp to help him do work, which of the following will be true?
  1. His effort force and effort distance will remain the same. His MA = 1.
  2. His effort distance will decrease, his effort force will increase. His MA > 1.
  3. His effort distance will increase, his effort force will decrease. His MA > 1.
  4. His effort force will increase, his effort distance will decrease. His MA < 1.
Grade 9 Energy and Momentum
The diagram below shows an inelastic collision.
Elastic Collision
  1. True
  2. False
Grade 9 Energy and Momentum
An example of an object having elastic potential energy is
  1. a stretched spring.
  2. books on a shelf.
  3. a moving arrow.
  4. a falling oyster.
Grade 9 Energy and Momentum
Stored energy is called
  1. thermal energy.
  2. kinetic energy.
  3. mechanical energy.
  4. potential energy.
Grade 9 Energy and Momentum
Which of the following is an example of work (using the scientific definition)?
  1. A weight lifter holding a heavy bar above his head.
  2. A custodian pushing a broom across the gym.
  3. A student thinking of the answer to a test.
  4. A little brother pulling on a door that won't move because you locked it.
Grade 9 Energy and Momentum
The energy possessed by matter due to its motion is                  .
  1. potential energy
  2. kinetic energy
  3. static energy
  4. none of the above
Grade 9 Energy and Momentum
What is equal to the product of mass and velocity?
  1. inertia
  2. force of gravity
  3. weight
  4. momentum
Grade 9 Energy and Momentum
Energy in the form of motion is
  1. potential energy.
  2. chemical energy.
  3. kinetic energy.
  4. mechanical energy.
Grade 9 Energy and Momentum
The energy of a moving object is
  1. kinetic energy.
  2. potential energy.
  3. chemical energy.
  4. nuclear energy.
Grade 9 Energy and Momentum
List three other forms of energy.
Grade 9 Energy and Momentum
Which of the following is not used to calculate potential energy?
  1. mass
  2. height
  3. gravitational acceleration
  4. speed
Grade 9 Energy and Momentum
Kinetic energy depends on what?
  1. speed and mass
  2. mass and velocity
  3. mass and distance
  4. distance and speed
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