Quiz about Freysguys Grade 4 Light and Sound

Question 1

_________ is a form of energy that travels through the air.

Accepted Answer

sound

Answer

volume

Answer

energy

Answer

wave

Question 2

___________ is made when something vibrates

Accepted Answer

sound

Answer

light

Answer

drum

Answer

pounding

Question 3

The volume of a sound is measured in units called ________

Accepted Answer

decibels

Answer

liters

Answer

sound waves

Answer

inches per minute

Question 4

Sound travels through the air as waves.

Accepted Answer

True

Answer

False

Question 5

A sound that bounces off a surface is called an ________.

Accepted Answer

echo

Answer

loud sound

Answer

repeat

Answer

quiet sound

Question 6

Matter that carries sound waves is called a _________

Accepted Answer

medium

Answer

low

Answer

high

Answer

surface

Question 7

The ______ of a sound depends on the medium through which it's moving.

Accepted Answer

speed

Answer

pitch

Answer

vibration

Answer

sound

Question 8

the number of vibrations per second

Accepted Answer

frequency

Answer

vibration

Answer

volume

Answer

pitch

Question 9

how high or low a sound is

Accepted Answer

pitch

Answer

frequency

Answer

volume

Answer

vibration

Question 10

the loudness of a sound

Accepted Answer

volume

Answer

vibration

Answer

pitch

Answer

frequency

Question 11

Sound is caused by?

Accepted Answer

vibrations

Answer

force

Answer

instruments

Question 12

Sound is a form of?

Accepted Answer

energy

Answer

pitch

Answer

volume

Question 13

Measure of how high or low a sound is

Accepted Answer

pitch

Answer

amplitude

Answer

compression

Answer

speed of sound

Question 14

An object that does not vibrate cannot produce

Accepted Answer

sound

Answer

light

Answer

heat

Answer

electricity

Question 15

What is volume?

Accepted Answer

the loudness or softness of a sound

Answer

how high or low a sound is

Answer

the number of vibrations per second

Answer

vibrations

Question 16

A cut piece of clear glass or plastic in the form of a triangle or other geometric shape.

Accepted Answer

Prism

Answer

Person

Answer

Prison

Answer

Preacher

Question 17

Which way best describes how light moves?

Accepted Answer

straight line

Answer

in circles

Answer

slowly

Answer

faster through opaque objects

Question 18

Which material is NOT translucent?

Accepted Answer

Brick

Answer

Tissue paper

Answer

Thin sheet of plastic

Question 19

What is light?

Accepted Answer

A form of energy

Answer

A form of sound

Answer

bright stuff

Answer

A form of excitement

Question 20

Which material is opaque?

Accepted Answer

Brick

Answer

Water

Answer

Tissue Paper

Answer

Glass

Question 21

What is the main source of light?

Accepted Answer

Sun

Answer

Light bulbs

Answer

Candles

Answer

Fluorescent lights

Question 22

Why does a straw look broken when you put it in a cup of water?

Accepted Answer

It is being refracted.

Answer

It is being reflected.

Answer

It is broken.

Answer

The colors are being separated.

Question 23

Which one is an example of light being reflected?

Accepted Answer

Seeing yourself in a mirror

Answer

Lighting a candle

Question 24

If you are in a dark room, which source of light will appear the brightest to you?

Accepted Answer

A candle on the table in front of you

Answer

Car lights outside

Answer

The lights next door

Answer

A flashlight shining down the hallway

Question 25

What is the name of the object used to separate light?

Accepted Answer

Prism

Answer

flashlight

Answer

water

Answer

Glass

Question 26

________ is the distance between a point on one wave and a similar point on the next wave.

Accepted Answer

wavelength

Answer

frequency

Answer

pitch

Question 27

___________ is the number of waves that pass a point in a certain amount of time.

Accepted Answer

Frequency

Answer

Pitch

Answer

Wavelength

Question 28

_______ describes how high or low a sound is.

Accepted Answer

Pitch

Answer

Frequency

Answer

Wavelength

Question 29

If you change the frequency, or wavelength, of a sound wave, you change its ______.

Accepted Answer

pitch

Answer

loudness

Answer

vibration

Answer

compression

Question 30

Sound cannot travel through __________.

Accepted Answer

empty space

Answer

air

Answer

metal

Answer

water

Question 31

____________ occurs when an object takes in a light wave.

Accepted Answer

Absorption

Answer

Refraction

Answer

Reflection

Question 32

_________________ is the bending of light when it passes into a new medium.

Accepted Answer

Refraction

Answer

Absorption

Answer

Reflection

Question 33

A piece of glass that separates white light into its different wavelengths is called a ___________

Accepted Answer

prism

Answer

crystal

Answer

mineral

Question 34

What happens during refraction of light as it passes through a prism?

Accepted Answer

Light bends and separates into individual colors.

Answer

Different colors of light combine into white light.

Answer

All the colors of light bend in the same way.

Answer

All of the light bounces off the prism.

Question 35

Why does light bend when it travels through a different medium?

Accepted Answer

Light changes speed when it passes through a different medium.

Answer

Light is reflected when it passes through a different medium.

Answer

Light is absorbed when it passes through a different medium.

Answer

Light changes to heat when it passes through a different medium.

Question 36

A guitarist strums two strings of the same thickness on a guitar. The first string vibrates more quickly than the second string. What is true about the pitch of the strings?

Accepted Answer

The first string has a higher pitch than the second string.

Answer

The first string and the second string have the same pitch.

Answer

The pitch of the second string depends on the pitch of the first string.

Answer

The second string has a higher pitch than the first string.

Question 37

Why does a megaphone make it easier to hear sound?

Accepted Answer

Like a funnel, it focuses the sound waves in a direction so that the sound waves are scattered in fewer directions.

Answer

It is a cone, and just like ice cream cones, people get louder around it!

Answer

It makes the energy get bigger.

Answer

This is false; megaphones do not help us to hear.

Question 38

We see a red t-shirt because . . .

Accepted Answer

Red light is reflected and the other colours are absorbed.

Answer

Red light is absorbed and the other colours are reflected.

Answer

Red light is refracted.

Answer

Like stop signs, red means stop, and the red light stops at our eye.

Question 39

Sound travels faster than light in space only.

Accepted Answer

True

Answer

False

Question 40

Check all that apply. Light and Sound . . .

Accepted Answer

both travel in waves, but only sound needs a medium to travel through, and both are affected by frequency (the number of times the crest of a wave passes a point).

Answer

both travel in waves, and need a medium to travel through, and both are affected by frequency (the number of times the crest of a wave passes a point).

Answer

travel at different speeds, with sound being many times faster

Answer

both travel in photons, and need a medium to travel through, and both are affected by frequency (the number of times the crest of a wave passes a point).

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