Ch. 5 Sec. 2 - 4

Question 1

What happens when someone speaks?

Answer 1

Some of the air molecules get compressed

Question 2

What happens after the air molecules get compressed?

Answer 2

It returns to the original uncompressed state.

Question 3

When the sound waves move across the roomBwhay does it cause your eardrums to do?

Answer 3

It causes them to vibrate.

Question 4

Where are the vibrations sent?

Answer 4

They are sent to the brain to be “decoded”

Question 5

What does the speed of the wave depend on?

Answer 5

The characteristics of the medium

Question 6

What is the velocity equation?

Answer 6

v=d/t

Question 7

What is the velocity equation with wavelength and frequency?

Answer 7

v=f/lambda

Question 8

What is the period equation?

Answer 8

T==1/f

Question 9

What does v stand for?

Answer 9

Speed in m/s

Question 10

What does d stand for?

Answer 10

Distance in m

Question 11

What does t stand for?

Answer 11

Time in s

Question 12

What does f stand for?

Answer 12

Wave frequency in Hz

Question 13

What does lambda stand for?

Answer 13

Wavelength in m

Question 14

What does T stand for?

Answer 14

Period in s

Question 15

What is a period?

Answer 15

The time between recurring features of a wave

Question 16

What is diffraction?

Answer 16

The ability of sound waves to spread out or change direction

Question 17

When there is a little opening, is there more or less wave diffraction?

Answer 17

More

Question 18

If there is a big opening, is there a little or big wave diffraction?

Answer 18

Little or less

Question 19

What is resonance?

Answer 19

The phenomenon of generating sound by blowing into a tube.

Question 20

What do vibrations in a column of air produce?

Answer 20

It produces sounds as standing waves

Question 21

The shorter the column, the higher or lower the pitch?

Answer 21

Higher

Question 22

When the tube is open on both ends, what happens?

Answer 22

The pitch produced by the column is higher than if the column of air is closed at one end.

Question 23

If the tube is closed at one end, what happens to the pitch and frequency?

Answer 23

The pitch and frequency ⬇️

Question 24

With an open tube what happens to the wavelength?

Answer 24

1/2lambda or lambda= 2L

Question 25

What happens to lambda when the tube is closed on one end?

Answer 25

1/4lambda or lambda= 4L

Question 26

What kind of wave is sound?

Answer 26

A compressional wave