Sound Waves PHYSICS

Question 1

What is needed to make a sound?

Answer 1

Vibrations

Question 2

What is needed in the air to make sounds?

Answer 2

Molecules

Question 3

What is the process of sound passing through our ears?

Answer 3

The vibrations make to eardrum vibrate and the vibrations are passed through to the small bones (OSSICLES) to the cochlea. Signals are then passed through from the cochlea to the brain from the auditory nerve.

Question 4

What does amplitude determine?

Answer 4

The loudness of the sound

Question 5

How is pitch displayed?

Answer 5

By the spacing out of the waves

Question 6

WHat is frequency measured in?

Answer 6

Hertz (Hz)

Question 7

How do you interpret oscilloscope traces?

Answer 7

Volume (amplitude ) shown by the height of the waves displayed

Question 8

What is the frequency of a wave?

Answer 8

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

Question 9

What is the range of human hearing?

Answer 9

20Hz - 20,000 Hz

Question 10

What is the equation when trying to find out what the speed is?

Answer 10

Speed = Distance
_______
Time

Question 11

What are the names of the three small bones connected to the ear drum?

Answer 11

Malleus, Incus and Staples

Question 12

What are the names of the to nerves that connect to the brain from the ear?

Answer 12

Cochlea nerve and

Vestibular nerve

Question 13

What is the name of the thing that looks like a snail in your ear?

Answer 13

Cochlea

Question 14

What part of the ear is the first thing to vibrate when vibrations enter the ear?

Answer 14

The eardrum

Question 15

What is the outside of the ear called?

Answer 15

Pinna

Question 16

What is the name of the tube that connects your ear to your throat?

Answer 16

Eustachian Tube

Question 17

What is frequency?

Answer 17

Frequency is the number of vibrations per unit time.

Question 18

Why can’t astronauts hear each other when they talk in space?

Answer 18

There are no air molecules so therefore no vibrations can be made in space.

Question 19

What is an echo?

Answer 19

An echo is a sound that is repeated because the sound waves are reflected back

Question 20

What is a ultrasound

Answer 20

An ultrasound uses high-frequency sound waves to create an image of part of the inside of the body.

Question 21

What is the range of an ultrasound?

Answer 21

20,000Hz +

Question 22

What is the name of the canal that leads to the middle section of the ear?

Answer 22

Auditory Canal

Question 23

Which does sound travel slower in solid, liquid or gases?

Answer 23

Gases

Question 24

What is the wavelength of a wave?

Answer 24

The distance between the same two points on a wave

Question 25

Which is faster light or sound?

Answer 25

Light

Question 26

What type of waves are sound waves?

Answer 26

Longitudinal

Question 27

Because a sound wave must travel through a medium, it is called a ________ wave.

Answer 27

Mechanical

Question 28

What does a longitudinal wave mean?

Answer 28

The disturbance moves in the same direction as the wave

Question 29

Another word for frequency is?

Answer 29

Pitch

Question 30

What do we call the region of a sound wave where the molecules are bunched closer together?

Answer 30

Compression

Question 31

What do we call the region of a sound wave where the molecules are spread out?

Answer 31

Rarefaction

Question 32

What canals are connected to the cochlea

Answer 32

Semicircular canals