SOLAR SYSTEM

Detailed explanation-1: -Satellites looking toward Earth provide information about clouds, oceans, land and ice. They also measure gases in the atmosphere, such as ozone and carbon dioxide, and the amount of energy that Earth absorbs and emits. And satellites monitor wildfires, volcanoes and their smoke.

Detailed explanation-2: -Artificial satellites are used for mobile communication, television and radio broadcasting, navigation, weather forecasting, and military intelligence, etc. However, they cannot help in identifying and locating underground resources like water.

Detailed explanation-3: -They are used for diverse purposes such as weather forecasting, television signal, amateur radio and internet communications and the Global Positioning System. They are also used to look outward at the solar system for research and data gathering purposes.

Detailed explanation-4: -communications – satellite television and phone calls; Earth observation-including weather forecasting, tracking storms and pollution, spying and satellite photography; navigation-including the Global Positioning System (GPS); astronomy – looking into outer space from our solar system.

Detailed explanation-5: -A satellite maintains its orbit by balancing two factors: its velocity (the speed it takes to travel in a straight line) and the gravitational pull that Earth has on it. A satellite orbiting closer to the Earth requires more velocity to resist the stronger gravitational pull.

Detailed explanation-6: -Frictional force has nothing to do for keeping a satellite in its orbit.