Question

study and 1. Fill in the blanks

a) If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will ____________.

b) The initial velocity (during launching) of the Managalyaan, must be greater than _____ of the earth.

2. State with reasons whether the following sentences are true or false.

a) If a space craft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than escape velocity.

b) The escape velocity on the moon is less than that on the earth.

c) A satellite needs a specific velocity to revolve in a specific orbit.

d) If the height of the orbit of a satellite increases, its velocity must also increase.

3. Answer the following.

1. What is meant by an satellite? How are the satellites classified based on their function ?

2. What is meant by the orbit of a satellite? On what basis and how are the orbits of satellites classified?

3. Why are geostationary satellites are not useful for studies of polar regions?

4. Why it is beneficial to use satellite launch vehicles made of more than one stage?

5. Complete the following table

IRNSS



Weather study and predict​

Answer 1

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