Question

List 5 importance of artificial Satellites...!!!!


No cooied answer....!!!
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Answer 1

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• Artificial satellites are used to study the Earth.

• Other planets, to help us communicate, and even to observe the distant Universe.

• Satellites can even have people in them, like the International Space Station and the Space Shuttle.

• The first artificial satellite was the Soviet Sputnik 1 mission, launched in 1957.

Answer 2

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• Low Earth orbit (LEO) – from 200 to 2,000 km, for example, the ISS orbits at 400 km with a speed of 28,000 km/hour, and time for one orbit is about 90 minutes.
• Medium Earth orbit (MEO) – most MEO satellites are at an altitude of 20,000 km, and time for one orbit is 12 hours.
• Geostationary orbit (GEO) – 36,000 km above the Earth. Time for one orbit is 24 hours. This is to match the rotation of the Earth so that the satellite appears to stay above the same point above the Earth’s surface. This is used for many communications and weather satellites.

• The bus – this is the frame and structure of the satellite to which all the other parts are attached.
• A power source – most satellites have solar panels to generate electricity. Batteries store some of this energy for times that the satellite is in the shadow of the Earth.