A. SW 3.3 Write the letter of the correct answer:
1. The following are electromagnetic waves, EXCEPT
A. Infrared
B. Gamma rays
C. Sound
D. X-rays
2. What type of wave does NOT need a medium for it to propagate?
A. Electromagnetic waves
B. Mechanical waves
C. Surface waves
D. Ocean waves
3. Which of the following correctly describes a wave?
A. It can set an object into motion
B. It moves through materials only.
C. It transmits weaker force
D. It is static
4. Which of the following is not an example of a mechanical wave?
A. Light
B. Sound waves
C. Seismic waves
D. P - waves
5. What type of wave needs a medium to propagate?
A. Electromagnetic waves
B. Mechanical waves
C. Microwaves
D. Ultraviolet
6. Marky is doing an experiment. He throws a piece of stone in a pond. Was he able to create waves?
A. No, waves were created when the stone touches water.
B. Yes, he was able to create depressions on the water.
C. No, the stone floats on the water.
D. Yes, he observes that when the stone touches the water, circular ripples are formed.
7. In which general type of wave do the particles move perpendicular to the direction of the wave motion?
A. Longitudinal waves
B. Transverse wave
C. Mechanical wave
D. Electromagnetic wave
8. Which of the following statements correctly describes a wave?
A. I,II,III,IV
B. I,II,III only
C. II,III,IV only
D. I,III,IV only
9. Which of the following statements incorrectly describes electromagnetic wave?
A. Electromagnetic wave is a type of wave that can transmit energy even without any medium. B. Electromagnetic wave is a type of wave that transmits energy through a medium.
C. When you use radio or watch movie on your LED television you are using electromagnetic waves.
D. The waves that cook the popcorn in the microwave oven are electromagnetic waves
10. Earthquake(seismic)waves are felt through the grounds. Are these waves electromagnetic in nature?
A. Yes, because these need medium in order to propagate
B. No, because these do not need medium to propagate
C. No, because these are mechanical waves.
D. Yes, because this carry energy.
PA ANSWER PO NG MAAYOS THANKS PO​