Solar System & Gravity Review

The more _____ an object has, the more gravity it will have.

• mass

• weight

Mars has less gravity than Earth because Mars has _____ mass than Earth.

• more

• less

• the same

The more distance between two objects, the _____ gravity they will have.

• more

• less

Which of the following would create the strongest gravity?

• two large planets far apart

• two small planets far apart

• two large planets close together

Weight is a person's mass AND the force of gravity of the planet the person is on. A person would weigh more on Jupiter than on the Earth because . . .

• Jupiter has more mass and thus more gravity

• Jupiter has less mass and thus more gravity

The farther away an object is from the Sun....

• the more gravitational pull it will feel from the Sun

• the less gravitational pull it will feel from the Sun

The closer a planet is to the Sun...

• the faster it orbits

• the slower it orbits

Why don't Mercury and Venus have moons?

• They're too hot and will melt the moons that try to orbit them.

• They're too small and full of gas.

• They move too slowly around the Sun to hold any moons.

• Their gravity isn't strong enough to overcome the Sun's gravity and hold the moons to them.

Which planet has the most gravity?

• Neptune

• Mars

• Jupiter

• Earth

What is gravity?

• The force that pulls things toward each other.

• A force that pushes things down.