Free Printable SOUND WAVES

Worksheets

SOUND WAVES_G7

Total questions: 20

Worksheet time: 40mins

Name

Class

Date

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's

concussion.

amplitude.

reflection.

frequency.

If the distance represented by the letter A were increased, how would it change the way the sound was heard?

The sound would be higher.

The sound would be lower.

The sound would be softer.

The sound would be louder.

Sound is produced by

music

vibrations of molecules

Electromagnetic Waves

Transverse Waves

Sound is a form of _________________ that travels as waves through a ________________.

light/ transparency

energy/ vibration

energy/ medium

frequency/ medium

Sound does not travel in space because

Space is too far away.

There is no matter in space.

Space is the final frontier

Space has planets.

What medium does sound travel through slowest?

gas

solid

liquid

trees

Why is sound able to travel faster through a solid than a gas?

Gas molecules are packed tightly.

Sound does not travel faster through a solid than a gas.

Solid molecules are packed tightly.

Gas molecules move slowly.

The diagram shows a cartoon of a sound wave produced while a student is speaking.

What happens to the sound wave when the student speaks louder?

The amplitude increases

the wavelength will double

the speed will increase

the amplitude will decrease

Which materials reflect sound well?

10.

Which object will vibrate faster if tapped with a metal spoon?

A metal can

A glass jar

A plastic cup

A wooden bowl

11.

The diagram shows a research vessel using sonar to map the ocean floor.

Upon which basic behavior of sound waves does this technology depend?

absorption

compression

reflection

refraction

12.

Which of these animals uses ultrasound?

13.

What causes an echo?

sound waves bouncing off large, hard surfaces

sound waves bouncing off carpet

sound waves bouncing off inside a cloth shop

you repeating yourself

14.

What is the purpose of transmitting the sound wave?

Giving a warning signal

Detecting the distance

Delivering information

Determine the rock size

15.

SONAR is a technique or device that used for :

I. detecting objects under water

II. detect cracks in metal structures

III. measure depth of the sea

IV. investigate the abdomen and heart conditions

I and II

II and III

I and III

I and IV

16.

The distance of the sea can be calculated using the formula

$d=\frac{v}{2t}$

$d=\frac{v\times t}{4}$

$d=\frac{v\times t}{2}$

$d=\frac{v}{4t}$

17.

The echo-sounder of a ship measures an interval of 0.6s and the speed of sound in water is 1200 ms^-1.

Calculate the depth, in m, of the sea?

680 m

390 m

720 m

360 m

18.

If the depth of the ocean floor is 9000 meters, how long, in total time, does it take sound waves to return to the SONAR detector?

Velocity of sound in water = 1500 m/s

13,500,000sec

12sec

0.17sec

3sec

19.

The total time for sound waves to return to a ship was 8 seconds after being released. What is the depth in meters?

Velocity of sound in water = 1500 m/s

12,000m

6000m

375m

187.5m

20.

If the depth of the ocean floor is 7500 meters, how long does it take sound waves to reach the bottom of the ocean?

Velocity of sound in water = 1500 m/s

10sec

5sec

11,250,000sec

0.2sec

Reset

SOUND WAVES_G7

Total questions: 20

Worksheet time: 40mins

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