6. The invisible light that is emitted by mobile phones
a. Microwave c. television
b. Radio
d. x-ray
7. The color seen when an object reflects all the colors
of light
a. Red
C. white
b. Blue
d. indigo
8. The color that absorbs the most heat
a. Black
C. violet
b. Orange
d. white
9. The shape of the sound wave
a. Loudness c. pitch
b. Noise
d. quality
10. The process in which light is transmitted back
when its hits an object
a. Absorption C. reflection
b. Diffusion
d. refraction