Pretest:
Directions: Read the questions carefully, Write the letter of the correct answer on the
answer sheets provided.
1. What material is visible to human eye, and only part of electromagnetic
spectrum?
A. sound
B. light
C. air
D. water
2. Which kind of materials do not allow or block light to pass through?
A. translucent B. transparent C. opaque
D. oval
3. What color is considered the ultimate absorber of heat?
A pink
B. black
C. yellow
D. white
4. What is the coolest color in absorbing heat?
B. white
B. black
C. violet
D. red
5. Which process involves the passing of light through some materials?
A. absorption
B, refraction
C. reflection
D. transmission

PLEASE HELP ME:) :(​