Winter Benchmark Review Question Preview (ID: 45184)
Energy, Simple Machines, Atmosphere, Water Cycle Observation Vs Inference.
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Which shows potential energy changing to kinetic?
a) pulling back the string of a bow
b) putting canned food on a shelf
c) releasing a slingshot
d) winding up a wind-up toy
A wheelbarrow has a
a) lever and pulley
b) wedge and wheel and axle
c) wheel and axle and a lever
d) wheel and axle and a pulley
A c-clamp is used in carpentry to hold pieces of wood. what is the threaded rod that is used to close the clamp?
a) lever
b) pulley
c) wheel and axle
d) screw
a simple machine that uses a rope wrapped around a wheel and axle is:
a) pulley
b) lever
c) wedge
d) screw
A student builds an electric circuit. It has a battery that is a attached to a wire attached to a bulb. The wire stops at the bulb. The bulb doesn't light. Why?
a) open circuit
b) closed circuit
c)
d)
Which pulley system reduces the amount of effort needed to lift the load?
a) one with three wheel and axles and a long rope
b) one with two wheel and axles and a medium length rope
c) one with one wheel and axle and a short rope
d) just a rope
The object that a lever or pulley is used to move is called
a) fulcrum
b) effort
c) force
d) load
a _________ scale is used to measure force
a) spring
b) number
c) load
d) pulley
Which is NOT an example of a lever
a) bolt
b) gas handle
c) broom
d) see saw
a book placed on a shelf stores _______ energy
a) potential
b) kinetic
c)
d)
When you move, you convert chemical energy into __________ energy.
a) radiant
b) nuclear
c) potential
d) mechanical
When you plug a radio into the wall, the energy transformation that occur is:
a) electrical to sound
b) electrical to thermal
c) chemical to electrical
d) sound to electrical
Which is TRUE for the law of conservation of energy
a) energy can be created
b) energy can be destroyed
c) energy can be transformed
d) energy only increases
Food, gasoline, and the energy we store in out bodies are all
a) thermal
b) chemical
c) radiant
d) mechanical
A windmill shows this type of energy transformation:
a) mechanical to electrical
b) electrical to mechanical
c) mechanical to sound
d) thermal to electrical
Which object transforms chemical energy to light?
a) toaster
b) lightbulb
c) glow stick
d) TV
What state of mechanical energy is used by a penguin as it dives off an iceberg?
a) potential
b) kinetic
c) thermal
d) radiant
When using a lever, if the load is FURTHER from the fulcrum and you want to lift it one meter:
a) more work is required
b) less work is required
c) more force is required
d) less force required
What is the only energy that can flow through wires?
a) chemical
b) electrical
c) radiant
d) mechanical
The higher off the ground an object is, the more _________ energy it has
a) gravitational kinetic
b) gravitational potential
c) elastic kinetic
d) elastic potential
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