Sound Waves

Question 1

Sound energy

Answer 1

Vibrates particles, vibrations pass through particles

Question 2

Amplitude

Answer 2

Max distance travelled by particles compared to position at rest
Higher amplitude=louder voice
Greater amplitude=more energy

Question 3

Longitudal (compression & refraction)

Answer 3

Size of area of compression

Question 4

Wavelength

Answer 4

The length of the waves complete cycle

Question 5

Frequency + rule

Answer 5

of cycles per unit of time measures in hertz (Hz)

F= # cycles , seconds

Question 6

If the frequency goes up the wavelength…

Answer 6

Is smaller

Question 7

Mechanical wave + ex

Answer 7

Need a medium to travel through
Ex: sound,water, seismic waves

Question 8

Electromagnetic+ex

Answer 8

Waves that can travel through vacuum or a medium
Ex: radio, light, x ray

Question 9

Sound waves (3)

Answer 9

Longitudal waves that are mechanical
Produced by vibration of object
Vibrations are transmitted and can move through objects

Question 10

Speed travels more in mediums with…..

Answer 10

More particles

Question 11

Sound intensity (Db)
Measured in factors of…

Answer 11

10
1db- 1x louder
10db- 10x louder
20db- 100x louder
30db- 1000x louder

Question 12

Hearing damage occurs when you hear…

Answer 12

Ringing sounds in your ears

Question 13

Sound frequency

Answer 13

Called a: pitch (high or low)
Humans hear 20-20,000hz

Question 14

Infrasound

Answer 14

Lower than 20hz

Question 15

Ultrasound

Answer 15

Higher than 20,000hz