Light and Sound - Part 2

The picture shows 4 sound waves on an oscilloscope. Which 2 have the smallest amplitude?

• A

• B

• C

• D

Which statement is true of sound waves. Select 2 answers.

• They are made by objects vibrating

• They are detected because they make our ear drum vibrate

• They are transverse waves

• They travel faster in air than in water.

look at the picture. There are 4 sound wave with different amplitude and wavelength. Which sound wave has loudest sound?

• A

• B

• C

• D

When the car moves AWAY from you, its horn seems...

• Low pitched
• High pitched
• Normal

The picture shows 4 sound waves on an oscilloscope. What can you say about A?

• It is a very low pitched sound

• It is a very high pitched sound

• It is a very quiet sound

• It is a very loud sound

The picture shows 4 sound waves on an oscilloscope. Which has the highest pitch?

• A

• B

• C

• D

Human can hear Ultrasound?

• YES

• NO

Sound is a form of? 

• energy
• pitch
• volume

When a sound is louder what measurement gets bigger?

• Frequency 
• Amplitude 
• Wavelength 
• Crest

Frequency is measured in

• m/s

• m

• Hz

• Decibel