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Light & Sound Study Guide

Total questions: 19

Worksheet time: 10mins

Name
Class
Date
1.

Which object should Lexi place in front of her flashlight to signal "Hello" to her classmates?

a)
A. cardboard
b)
B. wax paper
c)
C. clear plastic
d)
D. glass prism
2.

Hudson needs to lower the pitch of the guitar to play his songs. How can he lower the pitch of the guitar?

a)

make the strings

tighter so they

vibrate faster

b)

make the strings

looser so they

vibrate faster

c)

make the strings

tighter so they

vibrate slower

d)

make the strings

looser so they

vibrate slower

3.

Savannah is clapping her hands at a concert.

If she uses more force to clap her hands, the sound will most likely become

a)
louder in volume
b)
softer in volume
c)
higher in pitch
d)
lower in pitch
4.

When Parker turns on the flashlight, which path is the light most likely to travel?

(the circles are holes in the cardboard)

a)

A

b)

B

c)

C

d)

D

5.

Which object best reflects light?

a)
a sheet of paper
b)
a box of crayons
c)
a hand lense
d)
a mirror
6.

What does it mean if an object is transparent?

a)
It is see-through
b)
It is very strong.
c)
It is very lightweight.
d)
It is long-lasting.
7.

Brooks held a smooth piece of aluminum foil near his face and could see himself.

Then, he crumpled up the foil, opened it back up, and looked at the foil again.

He could not see himself this time.

Why was Brooks unable to see himself in the crumpled piece of foil?

a)
A. The foil lost its thickness, and light was able to travel through it.
b)
B. The foil was uneven and trapped all of the light that traveled toward it.
c)
C. The foil was uneven, and the light that hit it traveled in many different directions.
d)
D. The foil absorbed the oils in Joshua's hand, and the oil caused light to stop at the foil.
8.

Light travels in waves. Which of the following statements about light waves is NOT true?

a)
A. They can travel through any type of material.
b)
They can be reflected by some types of material.
c)
They can come from sources across space.
9.

Which of these sounds has a high pitch?

a)
a whistle
b)
whales
c)
a truck
d)
thunder
10.

Which of the following is required for sound?

a)

chemicals

b)

vibrations

c)

water

d)

instruments

11.

What is the best description of why people can see themselves in a mirror?

a)

Light comes out of the mirror and bounces off a person's eyes.

b)

Light hits the mirror and it reflects light back into a person's eyes.

c)

Light comes out of a person's eyes and bounces off the mirror.

d)

Light goes through the mirror and hits a person's eyes on the other side.

12.

What happens to light in an object that is transparent?

a)

Light moves into the object and remains inside.

b)

Light moves through the object and is scattered out.

c)

Light moves around the object but does not go inside.

d)

Light moves through the object without being scattered.

13.

What happens to light in an object that is opaque?

a)

Light enters the object and is scattered in different directions.

b)

Light travels inside the object and remains trapped inside.

c)

Light is not able to enter the object and will not shine through.

d)

Light travels right through the object and is not scattered.

14.

He looks in the mirror and sees his reflection.

Which of the following pictures best shows what his shirt looks like in the mirror?

a)

A.

b)

B.

c)

C.

d)

D.

15.

What is true about objects that vibrate very quickly?

a)
A. They produce many low-pitched sound waves.
b)
B. They produce few low-pitched sound waves.
c)
C. They produce many high-pitched sound waves.
d)
D. They produce few high-pitched sound waves.
16.

Which of the below statements describes a prism?

a)
A. focuses light
b)
B. absorbs light
c)
C. refracts light
d)
D. dims light
17.

Gemma and Kailey are using a flashlight and mirrors to study light.

Gemma uses mirrors to change the direction of the light beam.

Kailey is confused. She thought light always travels in a straight line.

Which statement best describes what Kailey is forgetting?

a)
A. Only white light travels in a straight line.
b)
B. Light travels in a straight line until it strikes an object.
c)
C. Light travels unpredictably and it almost never travels in straight lines.
d)
D. Light travels in a straight line in air but will travel in curvy lines through other mediums.
18.

Robbie is investigating what happens in a dark room

when he turns on his flashlight and passes the light beam through the room.

What will most likely happen if the light beam reaches a mirror?

a)
A. The light beam will be reflected by the mirror and bounce back toward him.
b)
B. The light beam will be refracted by the mirror and bounce back toward him.
c)
C. The light beam will be reflected by the mirror and continue in the same direction.
d)
D. The light beam will be refracted by the mirror and continue in the same direction.
19.

Olivia and Fallon are partners in science class.

They have been asked to design a device that will communicate sound across a distance.

Olivia thinks their device would work best if they used some kind of solid object to transfer the sound across a distance. Fallon, on the other hand, thinks their device would work better if it used the air to transfer the sound.

Who is correct? Why?

a)

A. Fallon because sound vibrations travel best through the particles in air

b)

B. Olivia because sound vibrations cannot travel through the particles in air

c)

C. Fallon because sound vibrations cannot travel through the particles in solids

d)

D. Olivia because sound vibrations travel best through the particles in solids