Satellites

By: L

Intro

This paragraph is about what a Satellite is. According to http://wwwgma.org/surfing/sats.html-what, a satellite is an object that goes around and around or orbits, a larger object, such as a planet. While there are natural satellites, like the moon, hundreds of man-made satellites also orbit the earth. The satellite has helped many things such as TVs, radios, computers and cell phones. They even take pictures of the world in space so we can study them.

Why does a satellite stay in orbit?

Topic Sentence. According to http://www.gma.org/surfing/sats.html - stay a satellite stays in orbit because of balance of two effects: 
(1) velocity, or the momentum at which it would travel in a straight line, 
(2) the gravitational haul between the Earth and the satellite.

To demonstrate this principle,

Imagine that you may climb a make-believe mountain whose peak pokes higher than the Earth's atmosphere (it would be about ten times more elevated than Mount Everest). If you threw a baseball from the mountain summit, it would plummet to the soil in a curving course. Two motions do something upon it: traveling in a straight line and falling toward Earth. The faster you throw the ball, the farther it will go before it hits the earth. If you might throw the ball at a swiftness of 17,000 mph, the ball wouldn't arrive at the land. It would ring the Earth in a curved path; it would be in orbit. (It would be traveling at five miles per second and take about ten minutes to cross the United States.) This is the swiftness needed to put satellites into orbit, which is why the Space Shuttle along with other satellites have need of such strong boosters.

 

 

 

 

Conclusion

I hope you learned more about satellites.