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ACTIVITY 1:
Choose the letter of the correct answer and write it on the blank.
1. Which of the following in NOT a source of natural light?
a. Lightening
b. Jellyfish
c. Fire
d. Flashlight
2. How does light travel?
a. It travels by electromagnetic wave
b. It travels in a straight line
c. It travels farthest at night
d. None of the above
3. What is our main source of light energy?
a. Star
b. Fire
C. Sun
d. Solar panels
4. Which among the following is a source of artificial light energy?
a. Mobile phone
b. Firefly
C. Jellyfish
d. Bush fire
5. Which of the following is an example of visible light?
a. X-ray
b. Microwaves
c. a rainbow
d. radio waves​