Front

What would cause all of the planets to continue moving in a straight line based on their velocity (direction and speed)?

Back

The sun disappearing.

Front

What is the force of attraction between two objects that is directly related to mass and indirectly related to distance?

Back

Gravity.

Front

If an object has more ______, what will it have more of in terms of gravitational force?

Back

Mass.

Front

What is a shooting star actually called?

Back

Meteor.

Front

What is a small object that enters Earth's atmosphere from space and burns due to friction, emitting light?

Back

Meteor.

Front

What is the primary force that keeps planets in orbit around the sun?

Back

Gravity.

Front

What happens to the gravitational force between two objects if the distance between them increases?

Back

The gravitational force decreases.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force increases with mass.

Front

What is the term for the path that a celestial object follows as it moves through space?

Back

Orbit.

Front

What is the effect of gravity on the shape of celestial bodies?

Back

Gravity causes celestial bodies to form into spherical shapes.