EASY
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Earth Observation Satellite is used for the study of forests, deserts, oceans and polar ice on the earth's surface.

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Important Questions on The Universe

EASY
Name the first artificial satellite sent by Russia in space.
MEDIUM

What is an artificial satellite? Name any two types of artificial satellite and state their functions.

EASY

Which satellite is used for geographical survey?

HARD
Write the name of first spacecraft of India. Explain the importance of satellites launched by India.
EASY
What is the movement of the moon around the earth called?
EASY

Write the quadrants in which the following points lie:

-4,7

EASY

Moon is the natural satellite of sun.

EASY

The moon is the closest star to the Earth. Is this statement true? 

MEDIUM
It takes _____ to revolve around the earth.
HARD
If the height of a satellite completing one revolution around the earth in T seconds is h1 metre, then what would be the height of a satellite taking 22 T seconds for one revolution?
EASY
How long does the moon take to complete its phases from one new moon to the next new moon? 
 
MEDIUM

Match the following.

Column A Column B

1. Moon 

a. Planet 
2. Earth  b. Natural Satellite 
3. Sun  c. Artificial Satellite 
4. INSAT-1A  d. Star 
5. Orion  e. Constellation 




 






 

HARD
How much time a satellite in an orbit at height 35780 km above earth’s surface would take, if the mass of the earth would have been four times its original mass?
MEDIUM
What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified?
EASY

The pictures below show the different phases of the Moon.

Question Image

How many days does the whole cycle take?

EASY

Choose the correct word given below and fill in the blank. 
(moon, eight, stars, Milky Way, mercury)
The satellite of earth is the _____.

EASY
The Moon is a great ball of fire, just like the Sun.