Review (Counts as a Grade)

Front

What is the force of attraction that all matter experiences?

Back

Gravity

Front

What characterizes a planet's orbit in relation to other objects?

Back

Clear

Front

What units are used to measure distances in the solar system?

Back

Astronomical units and light-years

Front

Which measurement of matter changes if the percentage of gravity changes?

Back

Weight

Front

What is defined as anything that has mass and volume?

Back

Matter

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

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 or 150 million kilometers.

Front

What is the relationship between gravity and weight?

Back

Weight is directly proportional to the gravitational force acting on an object.

Front

How does gravity affect the motion of planets?

Back

Gravity keeps planets in orbit around the Sun by pulling them towards it.

Front

What is the significance of light-years in astronomy?

Back

A light-year is the distance that light travels in one year, used to measure vast distances in space.