Can we hear the sound on the moon?

2

(a)

In the picture of rotating earth given as figure mark the position of Pole star.

2

(a)

Can we read the distance of nearest star from the Earth conveniently?

2

(a)

Give the name of the periodic comet. Why is it called so?

2

(a)

Paheli saw the moon through a glass window at 8:00 PM. She marked the position of the moon on the glass pane. She got up at 4 AM in the morning. Will the moon be visible at the same position?

2

(a)

If I am 13 years old, how many times have I gone around the sun?

2

(a)

In which year, Halley's comet will be visible again?

2

(a)

Explain, why the planets do not collide while revolving around the Sun.

2

(a)

What is new moon day?

2

(a)

What are phases of the moon?

2

(a)

Who landed on the moon first and when?

2

(a)

Define satellite. Name the natural satellite of the Earth.

2

(a)

Why is Venus called morning star or evening star?

2

(a)

Why does earth have seasons?

2

(a)

Name the inner and outer planets of solar system.

2

(a)