Review

The Sun is the center of our solar system and creates a large amount of gravitational force.

If this system lost the Sun, what would happen to the planets?

• The planets would explode.

• The planets would stop moving.

• The planets would travel on a different path.

• The planets would continue on their same path.

Which statement typically demonstrates the relationship between the mass of a celestial

body and its gravitational pull?

• Mercury has the least mass of the planets in the solar system, so it has the greatest

  gravitational pull.

• Venus has less mass than Earth, so Earth has a lesser gravitational pull.

• Jupiter has the greatest mass of the planets in the solar system, so it has the greatest

  gravitational pull.

• The mass of a celestial body is not related to its gravitational pull on other bodies.

Gravity is the force that governs the motion of our solar system. Gravity from the sun causes the elliptical path of orbit for all planets.

• True

• False

The planets in the Solar System revolve around the Sun because the Sun is

• made of hydrogen and helium

• older than the other objects in the Solar System

• the source of most heat and light energy

• the strongest source of gravity in the Solar System

A rover was sent to Mars. The gravity on Mars is weaker than on Earth. Compared the mass and weight of the rover on Earth, the rover on Mars will have

• less mass and weight

• less mass bust equal weight

• equal mass but less weight

• equal mass and weight