What do satellites do?

What is a natural satellite?

What is an artificial satellite?

What force keeps objects in orbit?

What do moons orbit?

If a moon gets closer to a planet, what happens to its motion?

What causes a planet to accelerate?

What do planets orbit in our Solar System?

What are the orbits of planets like?

If the Earth moved towards the Sun, what would happen to its orbit?

If a planet moves in a circle at constant speed, what is happening to its velocity?

Why does an object accelerate when it gets closer to a planet?

What are comets?

What is an asteroid?

What are the orbits of asteroids like?

Where are asteroids found in our Solar System?

What causes the acceleration of an object?

If an object constantly changes direction, what is happening to its motion?

If velocity changes without speed changing, what is happening?

Why can velocity change even if speed doesn’t?

What type of quantity is velocity?

What happens when an object is travelling in a circle?

In what direction is the resultant force for motion in a circle?

What is the name of the force that causes motion in a circle?

What does gravitational field strength depend on?