A. Multiple Choice Questions
Answers:
1. d
2. c
3. a
4. c
5. b
Answers:
1. CRATERS
2. TELESCOPE
3. SATELLITE
4. CRESCENT
5. GIBBOUS
6. ECLIPSE
Answers:
1. New Moon is when the side of the Moon facing us gets no sunlight and we cannot see the Moon.
2. Full Moon occurs when the entire side of the Moon facing us gets sunlight. This happens on day 14.
3. Artificial satellites are devices placed by humans in space. They revolve around the Earth and are used for different purposes like communication and gathering of weather-related information.
Answers:
Ans-1. The Moon reflects the light of the Sun. This makes it shine in the night sky.
Ans-2. The Moon does not have any water. Its surface is dusty and covered with a layer of dust. It has mountains and huge round pits called craters on its surface.
Ans-3. Due to weak gravitational pull, the Moon has no atmosphere. Hence there is no rain on the Moon.
Ans-4.
a. No, the Moon does not change its shape every night.
b. The shape of the Moon appears to change every night because we only see the part of the Moon that reflects sunlight to us. This varies every night. The rest of the Moon is dark.
Ans-5. 
Ans-6. When the Earth comes in between the Sun and the Moon, the shadow of the Earth falls on the Moon. Lunar eclipses can be total or partial based on how much of the Earth’s shadow falls on the Moon. Lunar eclipses occur on Full Moon days.
Ans-7. The uses of artificial satellites are:
(i) Weather forecasts: Weather satellites are used to study atmospheric conditions to make accurate predictions of weather.
(ii) Communication: Communication satellites are used to relay television and radio programmes. It is also used for sending telephone signals to far-off places.
Ans-1. No, we cannot live on the Moon. There is no atmosphere surrounding it. Hence there is no wind or cloud or rain there. Due to the lack of atmosphere, during the day it is very hot. As there is no atmosphere to retain the heat, it becomes freezing cold at night.
Ans-2. The Earth is a satellite of the Sun.