Energy Review Utah 8.2.1 - 8.2.3 Question Preview (ID: 49596)
Utah 8.2.1 8.2.2 8.2.3.
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Select the best argument and evidence to explain the phenomenon of the bottom of your shoe sole melting when you press on a metal scooter brake.
a) The hot tire melted your shoe because gravitational potential energy changed to elastic potential energy.
b) The brake got hot and melted your shoe because heat energy changed into kinetic energy through friction.
c) The hot brake melted your shoe because potential energy changed to mechanical energy
d) The brake got hot and melted your shoe because kinetic energy changed into heat energy through friction.
How does the distance in the system affect the amount of energy given to the rock in the sling shot?
a) Pulled back more → more potential energy in slingshot → more kinetic energy for the rock.
b) Pulled back more → more potential energy in the slingshot → less kinetic energy for the rock.
c) Pulled back less → more potential energy in the slingshot → more kinetic energy for the rock
d) Pulled back less → more potential energy in the slingshot → less kinetic energy for the rock.
Where on a roller coaster has the most gravitational potential energy?
a) At the top of the largest hill
b) At to bottom of the largest hill
c) Half way down the largest hill
d) At the top of a loop
What is the relationship between the amount of mass and the amount of kinetic energy of an object moving at a constant speed.
a) More mass has more kinetic energy
b) More mass has less kinetic energy
c) The amount of mass does not change the amount of kinetic energy
d)
Two trucks move at the same speed toward a brick wall. One is empty and one is full of stone. Which would you expect to cause the most damage to the brick wall and why?
a) The empty truck because it is moving faster.
b) Both trucks will cause the same damage because they are the same size.
c) The full truck because it has less kinetic energy.
d) The full truck because it has more kinetic energy.
Two cars of the same mass are traveling down the road. One is going 30mph and the other 40 mph. Which has more Kinetic Energy?
a) The 30mph because it is moving slower
b) The 40 mph because it is moving faster
c)
d)
When a roller coaster is going UP a hill, what is happening to the energy?
a) Potential Energy is Turning into Kinetic
b) Kinetic is turning into Potential
c) Energy is being created
d) Energy is being destroyed
When a roller coaster is going DOWN a hill, what is happening to the energy?
a) Potential Energy is Turning into Kinetic
b) Kinetic is turning into Potential
c) Energy is being created
d) Energy is being destroyed
What type of energy is stored in a stretched rubber band?
a) Physical
b) Kinetic
c) Potential
d) Mechanical
What has more Potential Energy?
a) A ball rolling midway down a hill
b) A ball rolling at the bottom of a hill
c) A ball rolling up a hill
d) A ball sitting at the top of a hill
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