Sounds

Sound is caused by

• force

• vibrations

• instruments

Why can't humans hear sounds made by animals such as whales?

• Humans have a great range of sounds that can be heard.

• There are ultrasounds and infrasounds beyond human hearing.

• Whales live in the water where sound is unable to be transmitted.

• Whales are too large to make any sounds.

Sound travels in the form of _____.

• waves
• loops
• straight lines
• diangles 

In which medium will sound travel slowest?

• air
• water
• glass
• salt water

High Amplitude =__________________

• Louder sounds
• Quieter Sounds

Low frequency = _______ Pitch

• Low
• High

In General Sound waves travel the fastest in __________

• solid
• liquid
• Gas
• plasma

Which wavelength would have the highest pitch like a flute or whistle?

• High Frequency Wavelength
• Low frequency Wavelength

Sounds cannot travel in a vacuum so there is no sound in space.

• true

• false

We hear an echo when sound is .........

• reflected back by a surface

• absorbed by a surface

• passed through a surface.