1. Sound energy can travel through transverse wave while light energy can travel in space through
a. mechanical waves
b. electromagnetic waves
c. surface waves
d. both A and C
2. Heat of the sun is one of the reasons why life on Earth exists. The heat of the from the sun reaches the earth through
a. ultraviolet waves
b. infrared waves
c. mechanical waves
d. electromagnetic waves
3. Light is an electromagnetic waves. Which characteristics is common in all electromagnetic waves?
a. frequency
b. speed
c. wavelength
d. amplitude
4. It is necessary in an electrical equipment and devices since it can prevent the build up of excess charges where is not needed.
a. grounding
b. charging
c. polarization
d. none of the above
5. Compare the frequency and energy carried by UV waves to that of visible light, the UV waves have
a. high energy
b. low energy
c. no energy
d. didn't carry energy
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Answer:
1.A
2.D
3.C
4.A
5.B
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