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Understanding Orbits in Space

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Questions and Answers

What is the primary reason why all the planets have orbits around the Sun in the same direction and plane?

The planets were formed by the accretion of dust and debris around the Sun

The planets were formed by the explosion of a supernova

The planets were formed at different times and locations

The planets were formed by the gravitational collapse of a rotating cloud of gas and dust (correct)

What is the key similarity between throwing a ball out of a tower window and launching a satellite into orbit?

Both require the object to travel at a certain speed

Both require a push to initiate the motion (correct)

Both involve gravity keeping the object in motion

Both result in the object falling back to the ground

What is the key advantage of satellites in geostationary orbit (GEO) compared to other satellite orbits?

They require less fuel to maintain their orbit

They can observe larger areas of the Earth

They can be launched to a higher altitude

They can stay constantly above a fixed point on the Earth's surface (correct)

What is the primary reason why satellites in geostationary orbit (GEO) need to travel at a speed of about 3 km/s?

To match the rotation of the Earth (D) Signup and view all the answers

Which of the following is a key advantage of having satellites in orbit around the Earth?

All of the above (D) Signup and view all the answers

What is the primary force responsible for an object orbiting another?

Gravity (A) Signup and view all the answers

In our Solar System, which of the following is true regarding orbits?

The Moon orbits Earth, and Earth orbits the Sun, but the Sun is also pulled slightly from its centre. (D) Signup and view all the answers

How did the planets, moons, and asteroids in our Solar System form?

They were formed from the leftover gas and dust that coalesced around the Sun due to its gravitational pull. (A) Signup and view all the answers

What happens when objects of similar mass orbit each other?

They orbit around a common centre, with neither object at the exact centre. (C) Signup and view all the answers

What is the primary reason for the formation of tides in Earth's oceans?

The gravitational pull of the Moon on the oceans. (D) Signup and view all the answers