Why are Radio Waves used in communication?

• Because they have a high frequency

• Because its the only wave that music can travel on

• Because long wavelengths let them travel farther

• Because short wavelengths let them travel farther

Which waves have the lower frequency?

• Infrared

• Visable

• Ultra Violet

• Gamma

What color has the highest frequency?

• Red

• Yellow

• Green

• Purple

Red light travels faster then purple light

• True

• False

What is number 2?

• Trough

• Crest

• Amplitude

• Frequency

What is number 4

• Wavelength

• Amplitude

• Crest

• Frequency

Is item is...

• Analog

• Digital

This item is...

• Analog

• Digital

This wave is

• Analog

• Digital

When two mechanical waves interfere with each other, there amplitudes

• divide

• multiply

• add

• remain the same