Waves and sound

·       All waves transfer _____1_______ from one place to another 2 WITH/ WITHOUT transferring any matter.

• 1 energy

  2 with

• 1 vibrations

  2 without

• 1 energy

  2 without

• 1 vibrations

  2 with

Wavelength is ....

Amplitude is ...

The highest point of wave calls

• Crest

• Trough

• Compression

• Rarefraction

The lowets point of wave calls

• Crest

• Trough

• Compression

• rarefraction

Reflected sound is called _____

Does sound need a medium for travelling?

• only in vacuum

• only in water

• yes

• no

Explain Doppler effect

Belugas, dolphins, or bats use ____ to searach for food or orienation