Gravity in the Solar System

Front

What does the strength of gravitational force depend on?

Back

The strength of gravitational force depends on mass and distance.

Front

What is a solar system?

Back

A solar system is made up of a star and all the objects that travel around it.

Front

At about what speed does the Earth move around the sun?

Back

The Earth moves around the sun at about 30 km/s.

Front

What is gravitational force?

Back

Gravitational force is an attractive force between all objects that have mass.

Front

Which of these is NOT a requirement for a celestial object to be considered a planet?

Back

It has to have a moon.

Front

What is the role of gravity in the solar system?

Back

Gravity keeps planets in orbit around stars and moons in orbit around planets.

Front

How does distance affect gravitational force?

Back

As the distance between two objects increases, the gravitational force between them decreases.

Front

What is the relationship between mass and gravitational force?

Back

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

Front

What is a celestial object?

Back

A celestial object is any natural object outside of Earth's atmosphere, such as stars, planets, and moons.

Front

What is the difference between a planet and a dwarf planet?

Back

A planet must clear its neighborhood of other debris, while a dwarf planet does not.