7.9B Gravity & Motion in the Solar System

The greater the mass of an object, the greater the gravitational force it exerts.

The smaller the mass of an object, the greater the gravitational force it exerts.

Mass does not affect gravitational force.

Gravitational force only depends on distance, not mass.

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

Mass changes depending on location, but weight does not.

Weight is always the same on Earth and the Moon, but mass changes.

Mass is measured in pounds, while weight is measured in kilograms.

Mercury

Mars

Pluto

Venus

They have rocky or solid surfaces.

They are larger than the outer planets.

They are called gas giants.

They have rings.

They have rocky surfaces.

They are larger than inner planets.

They are called gas giants.

They do not have solid surfaces.

Jupiter is the most massive planet.

Uranus rotates on its side.

Jupiter was the first planet discovered by telescope.

Uranus has the shortest day of any planet.

Jupiter

Saturn

Uranus

Neptune

Because the Sun has more gravitational force than any of the planets in the solar system.

Because the planets have more mass than the Sun.

Because the Sun is closer to the planets than any other object.

Because the planets are attracted to each other more than to the Sun.