Unit 7 Review on Light & Data

__________________ means to bounce back light.

• reflect

• refract

• absorb

• echo

Is there light in outer space?

• No, because light need matter to travel through.

• Yes, because light doesn't need matter to travel through.

Reflection occurs when...

• light bends
• light shines in your eyes
• light goes through a surface
• light strikes a surface and bounces back

Waves transfer

• water. 
• wind. 
• energy. 
• particles. 

If you see an object as orange,

• it is absorbing orange light and reflecting all other colors. 
• it is reflecting all colors. 
• it is absorbing all colors. 
• it is reflecting orange light and absorbing all other colors. 

A green plant appears green because it is absorbing all colors except

• yellow.
• blue.
• red.
• green.

What means number of waves per second?

• wavelength
• reflection
• diffraction
• frequency

Which waves have the greatest amount of energy?

• gamma waves
• radio waves
• x-rays
• infrared light

The further right you go on the light wave spectrum, the more harmful the waves become.

• True
• False

Amplitude reflects the amount of ______________ in a wave.

• energy
• compression
• refraction
• speed