Question

What do you mean by artificial satellites? Write its uses?

Answer 1

Hint: The word artificial means human built. So artificial satellites are human built objects orbiting our planet Earth and many other planets in the solar system. They are launched into orbit using rockets. The design, altitude and size of an artificial satellite depends on the purpose. The first artificial satellite was launched by Soviet Sputnik 1 mission, in 1957.

Complete step by step solution : Some of the examples are weather satellites (GOES), communication satellites (ANIK), navigation satellites (GPS), scientific satellites (TERRIERS), and military satellites (MILSTAR).
Uses of artificial satellites include.
1. Helps in communication.
2. For studying earth and other planets
3. Observe the universe.
4. Weather forecasting
5. Assist navigation of ships and aircraft.

Additional information: Basic parts of satellite are
1. Bus – structure of satellite to which other parts are joined
2. Power source – satellite have solar panels or battery as the power source
3. Heat control system – satellites when exposed to sun they get exposed to extremely high temperatures
4. Computer system – artificial satellites need computers to receive data
5. Communication system – to send and receive data
6. Population system – rocket engine helps the satellite to placed in the correct orbit

Note: Types of satellites include communication satellites which revolve around the earth's equatorial plane in the same direction for 24 hours, remote sensing satellites help to study the earth's surface from a height of 480km, polar or sun-synchronous satellite, global positioning system. Satellites can have people inside them.