Energy Lessons 1 And 2 Question Preview (ID: 59874)


HMH Lessons 1 And 2 Review. TEACHERS: click here for quick copy question ID numbers.

A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?
a) It is lost as gravitational energy.
b) It is converted to kinetic energy.
c) It is destroyed as the ball moves.
d) It is used to make the ball slow down.

A toy robot can walk and talk and runs on batteries. Which type of energy is stored in the batteries?
a) nuclear
b) chemical
c) electrical
d) mechanical

How is mechanical energy calculated?
a) by adding potential energy and kinetic energy
b) by dividing potential energy by kinetic energy
c) by multiplying potential energy and kinetic energy
d) by subtracting potential energy from kinetic energy

Which of these is an example of the conversion of kinetic energy into gravitational potential energy?
a) a person walking up a hill
b) a person skiing down a hill
c) a car racing around an oval track
d) a person parachuting out of an airplane

Which of these statements is an example of energy transfer?
a) an open flame heating a pan of water
b) a plant using sunlight to produce glucose
c) turning on a flashlight to produce a beam of light
d) a child rubbing her hands together to warm them

Which term describes the energy that is stored due to the height of an object above the ground?
a) kinetic energy
b) chemical energy
c) mechanical energy
d) gravitational potential energy

Which of these has kinetic energy?
a) a book sitting on a shelf
b) hat and gloves on a table
c) cars parked in a parking lot
d) a child kicking a soccer ball

Which of these has the most kinetic energy?
a) a 25 kg fish tank sitting on a table
b) a 50 g fish swimming in a fish tank
c) a 7,500 kg car parked on a steep hill
d) a 50 kg boulder suspended from a cliff

If KE is kinetic energy and v is velocity, which of these graphs would be a straight line?
a) KE versus v
b) KE versus v^2
c) KE^2 versus v
d) KE^2 versus v^2

A sea bird builds its nest on a ledge above the ocean, where it fishes for food. When does the bird have the most potential energy?
a) flying at 10 m/s 10 m above the ocean
b) sitting in its nest 20 m above the ocean
c) swimming on the ocean surface at 2 m/s
d) diving for fish 3 m below the ocean surface

Which change would increase the kinetic energy of a moving object the most?
a) reducing the mass by half
b) reducing the speed by half
c) doubling the mass of the object
d) doubling the speed of the object

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