Gravity and Orbits

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, the strength of which depends on their masses and the distance between them.

Front

Which planet takes the least time to revolve around the Sun?

Back

Mercury takes the least amount of time to revolve around the Sun.

Front

What shape do orbits typically have?

Back

Orbits are typically elliptical, meaning they are oval-shaped.

Front

At which point in its orbit does a moon travel fastest?

Back

A moon travels fastest at the closest point to the planet in its orbit.

Front

What is the relationship between the size of a planet's orbit and its year length?

Back

A planet with a large orbit has a long year because it takes more time to complete one revolution around the Sun.

Front

What unit is best for measuring distances in space?

Back

Light years are the best unit to measure the distance between stars.

Front

What is an astronomical unit (AU)?

Back

An astronomical unit is the average distance from the Earth to the Sun, approximately 93 million miles.

Front

How does mass affect gravitational pull?

Back

The greater the mass of an object, the stronger its gravitational pull.

Front

What is the effect of distance on gravitational force?

Back

The gravitational force decreases as the distance between two objects increases.

Front

What is an orbit?

Back

An orbit is the path one object takes around another object due to gravitational forces.