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

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

Which satellite is used for geographical survey?

Write the quadrants in which the following points lie:

$\left(-4,7\right)$

Moon is the natural satellite of sun.

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

Match the following.

The pictures below show the different phases of the Moon.

How many days does the whole cycle take?

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