Energy Test #3 Review Question Preview (ID: 34680)


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Which object contains a pulley?
a) staircase
b) doorknob
c) can opener
d) window blinds

Which of the following pulleys is most efficient?
a) a single fixed pulley with a long rope
b) one with one wheel and a short rope
c) one with two wheels and a long rope (includes fixed and movable)
d) one with three wheels and a long rope (includes fixed and movable)

Mary is riding a roller coaster. Which statement is true about the car when it is at the top of the hill?
a) It has potential energy only
b) It has both potential and kinetic energy
c) It has kinetic energy only
d) It has neither potential nor kinetic energy

Which statement is true about a simple machine?
a) It decreases the amount of work to be done
b) It shortens the distance of work to be done
c) It increases the amount of force needed for work to be done
d) It decreases the amount of force needed for work to be done

Energy due to position is called
a) mechanical potential
b) electrical
c) heat
d) mechanical kinetic

Which of the following scenarios would have the most kinetic energy?
a) A book falling from a book bag near the floor
b) A book falling from ar chair
c) A book falling a desk
d) A book falling from a top locker

A property that enables something to do work is called ______________.
a) energy
b) force
c) potential
d) kinetic

Solar energy is from the
a) Earth's core
b) plants
c) Earth's atmosphere
d) sun

Which statement best describes shooting an arrow with a bow?
a) The drawstring of the bow has kinetic energy
b) The arrow loses energy
c) The flying arrow has kinetic energy
d) Stretching the drawstring on the bow does not require work

Eddie knocks a book on the floor and it makes a loud noise. What do we know about the energy in this example?
a) There is no change in the form of energy
b) Energy is only created when the book falls
c) Energy is changed from one form to another
d) Energy is destroyed once the book hits the floor

I rolled my garbage can to the curb. What best describes what I did?
a) I used energy to roll the garbage can to the curb
b) I used potential energy to roll the garbage can
c) I did not do any work because the can rolled on its wheels
d) I could use less energy if I rolled the can faster to the curb

A water bottle sitting on the edge of a table has what type of energy?
a) kinetic because it is heavy
b) kinetic because it can be moved
c) potential because it is not moving at this time
d) potential because it could fall due to gravity

A stretched rubber band is released. Name the energy transformations.
a) kinetic to potential
b) chemical to heat
c) kinetic to heat
d) potential to kinetic

What type of energy transformations happen when you eat food?
a) chemical to mechanical
b) thermal to chemical
c) chemical to solar
d) mechanical to chemical

What type of energy transformations happen when you turn a ceiling fan on?
a) chemical to radiant
b) chemical to electrical
c) electrical to mechanical
d) radiant to electrical

Barbara is going to use a lever to move a rock. Which lever would be most efficient?
a) a long lever with the fulcrum near her hands (effort)
b) a long lever with the fulcrum near the rock (load)
c) a short lever with the fulcrum near her hands (effort)
d) a short lever with the fulcrum near the rock (load)

What could Mrs. Hall do to make an inclined plane more efficient?
a) decrease the length and increase the height of the inclined plane
b) decrease the length and decrease the height of the inclined plane
c) increase the length and increase the height of the inclined plane
d) increase the length and decrease the height of the inclined plane

Which global wind belt influences weather near the equator?
a) Westerlies
b) Polar Westerlies
c) Trade Winds
d) Polar Easterlies

The barometric pressure in Ladson is rising steadily. What weather conditions are associated with high pressure?
a) thunderstorms
b) fair weather
c) blizzard
d) hurricane

Name the front: cold air slides under warm air, pushing the warm air up, possible leading to severe weather.
a) warm
b) cold
c) stationary
d) occluding

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