What type of wave make up sound?

1
What type of wave make up sound?

• COMPRESSIONAL WAVES

2
In sound, humans interpret or perceive INTENSITY
as __.

• LOUDNESS

3
Which part of the ear amplifies sound?

• MIDDLE EAR

4
How does temperature effect the speed of sound?

• As temperatures increase so does the speed of
  sound
• As temperature decreases so does the speed of
  sound

5
Which words go together?

• Intensity
• Pitch
• Energy
• Loudness
• Frequency
• Amplitude

Intensity, energy, Loudness, amplitude
Pitch Frequency
6
If we increase the frequency of a sound, what
else will change?

• PITCH

7
What UNIT is used to measure INTENSITY OF SOUND?

• DECIBELS

8
Which part of the ear collects sound waves?

• OUTER EAR

9
Which part of the ear interprets the sound wave?

• Inner ear

10
What two things will affect the speed of sound?

• TEMPERATURE
• DENSITY

11
What two things will affect loudness of a sound?

• Distance
• Energy

12
What unit is used to measure frequency of a wave?

• Hertz (Hz)

13
When the intensity or loudness increases, what
happens to the sound wave?

• AMPLITUDE increases

14
What are the two types of waves?

• Mechanical
• Electromagnetic

What makes electromagnetic waves different from
mechanical? Electromagnetic can travel through
EMPTY space, mechanical waves must travel through
matter.
15
What unit is used to measure loudness?

• Decibels (Db)
• What is the threshold of pain in decibels for the
  human ear?
• 120 Db

16
Frequency of a wave is measured in __.

• Hertz
• What is the range of frequencies that human can
  hear?
• 20-20,000 Hz

17
Humans perceive HIGH frequency as

• High pitch, high note
• Humans perceive LOW frequency as
• Low pitch or a low note

18
Will sound move faster in high temperatures or
low temperatures?

• High temperatures (warm)

19
Sound will move faster in __

• Air or
• Water or
• Steel ?
• Steel

20
What type of wave is a sound wave?

• Compressional wave

21
What characteristic of sound is demonstrated when
you hear echoes?

• Reflection
• What do we call repeated echoes?
• Reverberations

22
What do blind bats used to steer?

• Echolocation
• What do submarines use to steer?
• RADAR (a type of echolocation)