Write the full name of IRS.

Name the technique of collecting information about the Earth from an orbiting satellite.

Write the full name of INSAT.

Name two constellations which are visible in the sky:

(a) in the summer season.

(b) in the winter season.

State whether the following statements are true or false:

(a) Constellation Orion can be seen only with a telescope.

(b) Pole Star is a member of the Solar System.

(c) Mercury is the smallest planet of the Solar System.

(d) Uranus is the farthest planet in the Solar System.

(e) There are nine planets in the Solar System.

(f) Comets are members of the Solar System.

(g) INSAT is an artificial satellite.