Review Test 5: Question Preview (ID: 23954)

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When a ball is thrown into the air, it falls back to the ground. What causes this to happen?
a) the round shape of the ball
b) the way the ball is thrown
c) the force of the air against the ball
d) the force of gravity on the ball

Which demonstrates that light travels in straight lines?
a) the forming of shadows
b) the speed of light
c) the rainbow effect
d) the brightness of the Sun.

Two astronauts walking on the Moon are trying to communicate with each other. Which way of communicating will NOT work for
a) ringing a bell
b) flashing a light
c) using a radio
d) waving a hand

If you are on a seesaw and want your friend to go down, use a force that is a
a) push
b) pull
c) lever
d) pulley

Which force does a friend use to make you go higher on a playground swing?
a) pull
b) push
c) lever
d) pulley

When you walk on the sidewalk and roll your bike, the force you use is a
a) pull
b) pulley
c) push
d) lever

All sound is made by
a) vibrations
b) heat energy
c) magnetism
d) reflections

Hilda shouts hey in an empty hall at the shopping mall. The sound bounces off the walls and she hears
a) a recording
b) an echo
c) a circuit
d) a wavelength

Reflection occurs when
a) light bends.
b) light shines in your eyes.
c) light goes through a surface.
d) light strikes a surface and bounces off.

Which object will reflect the most light?
a) shiny red paper
b) mirror
c) copper
d) glass

Which object would BEST reflect light from a light bulb?
a) a shiny spoon
b) a black sweater
c) a glass of water
d) notebook paper

Which type of lens bulges out in the middle?
a) concave
b) convex
c) flat
d) glass

A magnifying glass is an example of what type of lens?
a) convex
b) concave
c) square
d) thick

What determines pitch?
a) solids
b) liquids
c) amplitude
d) the rate of vibration

What is a simple machine?
a) a machine with few parts
b) a machine that can not operate
c) a machine that is very complicated
d) a machine that can operate without energy put in

Why can astronauts jump higher on the Moon than on Earth?
a) There is more oxygen on the Moon.
b) Their pressurized suits help them.
c) The Moon's gravity is weaker than Earth's.
d) The warm temperature on the Moon gives the astronauts more energy.

Complete this sentence:A change in force always brings about a change in
a) energy
b) force
c) machines
d) position

Which answer lists only simple machines?
a) screw, car, tires
b) lever, screw, wheel
c) television, computers, lever
d) lawn mower, edger, leaf blower

Which of the following statements about noise is true?
a) Listening to loud music is less harmful if you do it a lot and get used to it.
b) Loud music is better for your ears than other sounds that are just as loud.
c) Loud music can damage the inside parts of your ears.
d) Hearing damage caused by loud noise eventually goes away.

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