Random 1
What type of energy is affected in a power outage? a. electricity b. magnetic c. nuclear d. thermal
a. electricity
What will all energy eventually become?
a. heat
b. kinetic
c. potential
d. thrust
a. heat
When is potential energy highest?
a. during a turn
b. at the top of a hill
c. at the bottom of a hill
d. when the coaster stops
b. at the top of a hill
What is the difference between kinetic and potential energy.
Kinetic energy= moving energy
Potential energy= stationary movement with the potential to move
What causes friction on flying objects?
a. air
b. soil
c. sunlight
d. water
a. air
When is the potential energy lowest?
a. during a turn
b. at the top of a hill
c. at the bottom of a hill
d. when the coaster stops
c. at the bottom of a hill
Which force stops the coaster?
a. friction
b. gravity
c. magnetic
d. spring
a. friction
What is part of the law of conservation of energy?
a. Energy cannot be used up.
b. Energy cannot change form.
c. All energy is chemical energy.
d. No energy can be kinetic energy.
a. Energy cannot be used up.
Which type of energy is considered “waste”?
a. chemical
b. electrical
c. nuclear
d. thermal
d. thermal
Define the law of conservation.
Energy is neither created nor destroyed.
How does friction generate heat in bodies?
a. The teeth and tongue grind food into small particles.
b. Heat is generated when muscles rub against each other.
c. Cells use thermal energy to grow and perform their tasks.
d. Food is converted into chemical energy by the digestive system.
b. Heat is generated when muscles rub against each other.
What is a trade-off?
a. a negative effect
b. a natural resource
c. a way to make energy
d. a human-made resource
a. a negative effect
Why can’t we make energy?
How is most energy “lost”?
a. by being used up
b. by moving objects
c. by generating light
d. by turning into heat
d. by turning into heat
How is electricity generated?
a. by eating plants and animals
b. by the spinning motion of the Earth
c. by converting other types of energy
d. by herding animals into one location
c. by converting other types of energy