Sound and Properties of Sound

Question 1

This is empty space with no matter.

Answer 1

Vacuum

Question 2

_____ is the back-and-forth movement of an object.

Answer 2

Vibration.

Question 3

What is the speed of sound in the atmosphere?

Answer 3

343 m/s

Question 4

Which state of matter does sound travel the slowest through?
a) solids
b) liquids
c) gases
d) vacuum

Question 5

Which of the following is NOT an elastic material?
a) air
b) rubber band
c) wall
d) spring

Answer 5

c) wall

Question 6

It refers to the number of vibrations per second.

Answer 6

Frequency

Question 7

__________ is a vibration transmitted through solids, liquids, or gases.

Answer 7

Sound

Question 8

This refers to the highness or lowness of sound.

Answer 8

Pitch

Question 9

________ is an explosive noise heard on the ground.

Answer 9

Sonic boom

Question 10

This is the bouncing back of sound or reflection of sound.

Answer 10

Echo

Question 11

These materials easily absorb sound.
a) soft
b) hard
c) elastic
d) vacuum

Answer 11

a) soft

Question 12

What is the unit of sound?

Question 13

He created the first telephone.

Answer 13

Alexander Graham Bell

Question 14

It is the unpleasant sound that is irritating and loud.

Answer 14

Noise

Question 15

The higher the frequency, the _______ the pitch.
a) lower
b) higher
c) same
d) unknown

Answer 15

b) higher