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Energy Lessons 1 And 2
Test Description: HMH Lessons 1 and 2 Review
Instructions: Answer all questions to get your test result.
1) 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 used to make the ball slow down.
B
It is lost as gravitational energy.
C
It is destroyed as the ball moves.
D
It is converted to kinetic energy.
2) A toy robot can walk and talk and runs on batteries. Which type of energy is stored in the batteries?
A
electrical
B
mechanical
C
chemical
D
nuclear
3) How is mechanical energy calculated?
A
by dividing potential energy by kinetic energy
B
by adding potential energy and kinetic energy
C
by subtracting potential energy from kinetic energy
D
by multiplying potential energy and kinetic energy
4) Which of these is an example of the conversion of kinetic energy into gravitational potential energy?
A
a car racing around an oval track
B
a person parachuting out of an airplane
C
a person walking up a hill
D
a person skiing down a hill
5) Which of these statements is an example of energy transfer?
A
turning on a flashlight to produce a beam of light
B
a plant using sunlight to produce glucose
C
a child rubbing her hands together to warm them
D
an open flame heating a pan of water
6) Which term describes the energy that is stored due to the height of an object above the ground?
A
mechanical energy
B
kinetic energy
C
gravitational potential energy
D
chemical energy
7) Which of these has kinetic energy?
A
a child kicking a soccer ball
B
cars parked in a parking lot
C
hat and gloves on a table
D
a book sitting on a shelf
8) Which of these has the most kinetic energy?
A
a 7,500 kg car parked on a steep hill
B
a 50 g fish swimming in a fish tank
C
a 25 kg fish tank sitting on a table
D
a 50 kg boulder suspended from a cliff
9) If KE is kinetic energy and v is velocity, which of these graphs would be a straight line?
A
KE versus v^2
B
KE versus v
C
KE^2 versus v^2
D
KE^2 versus v
10) 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
diving for fish 3 m below the ocean surface
B
flying at 10 m/s 10 m above the ocean
C
sitting in its nest 20 m above the ocean
D
swimming on the ocean surface at 2 m/s
11) Which change would increase the kinetic energy of a moving object the most?
A
reducing the speed by half
B
reducing the mass by half
C
doubling the speed of the object
D
doubling the mass of the object
*select an answer for all questions
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