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Flashcards in Chapter 10 Test Deck (24):
0

What causes sound?

Vibrations
When matter vibrates

1

How do air molecules enable sound to travel from a radio to your ears?

The particles in the air are close together so when one vibrates they all start to vibrate which cause the sound to move

2

How does the ringing sound of a telephone travels from the phone to your ear?

Sound waves
The ringer vibrates

3

Medium would travel through steel faster because...

Because the particles vibrate together because they are so close.

4

Would medium travel faster in colder or warmer water?

The warmer water because the molecules are moving faster

5

Amplitude of a compressional wave

Refers to the density of the particles

6

Loudness and intensity are related to the amplitude and energy of a wave how?

Work together to create the pitch
Decibel unit of measure

7

What does hertz measure?

Frequency

8

Abbreviation of hertz

Hz

9

Decibels measure?

Sound intensity

10

Abbreviation for decibel

dB

11

Frequency of a wave

# of wavelengths that pass a fixed point in one second

12

Why would reverberations be a problem when using a gym for a concert?

There would be endless echoes and all of the sounds would come together and mix with each other

13

Designing a concert hall well?

Echoes and they could be reduced by fabric on the walls and carpet on the floor and curved walls

14

When to use ultrasound?

When there is an injury on the soft tissue inside the body

15

X rays are used to see what?

Bones

16

Sound is caused by...

A vibration

17

Ultrasound is used to break up...

Kidney stones

18

The bowl of a kettle drum that amplifies sound is called...

A resonator

19

Loudness is determined by...

The intensity of a sound

20

As you move away from a warning siren, the pitch...

Decreases

21

Multiples of the fundamental frequency are called...

Overtones

22

Noise is sound without...

A set pattern

23

Ultrasound is used to...

Study body organs