Surface of the Moon

Q.

Similar to light, sound is also an electromagnetic wave.

1. True
2. False

Q. There is no ___ on the moon.

1. atmosphere
2. gravity
3. sound
4. craters

Q.

What are the dark spots on the Sun that appear in 11-year cycles called?

1. Sunspots

2. Thrusters

3. Water Vapor

4. Aerobic

Q.

Sam's father and mother are astronauts. Last month they returned from a tour to the Moon. Sam's father told him that they had air filled helmets and they also had microphones, which they used for talking to each other. Why did they use microphones to talk even after they were close enough to hear the sound of each other?

1. There is no air on the moon

2. There was too much noise on the moon

3. Both A & C

4. His father's voice was too low because he got choked due to poisonous gases of the moon

Q.

Sound wave is a mechanical wave, which means, unlike light, it needs a medium to travel.

1. False

2. True