Gravity

Which is the best explanation of the term "weight"?

• A large celestial body that revolves around a star.

• Measurement of the force of Earth's gravity pulling you down.

• A push or a pull.

• Attraction between two objects that is proportional to the masses of the objects.

The attraction between two objects with a strength that is proportional to the masses of the objects is called:

• Force

• Gravitational force

• Gravity

• Planet

The force that pulls two objects toward each other and is affected by mass and distance. The greater the mass of an object, the greater the attraction; the farther apart the objects, the weaker the attraction is called:

• Force

• Gravitational force

• Gravity

• Planet

Which is the best explanation of the term "force"?

• A large celestial body that revolves around a star.

• The force that pulls two objects toward each other and is affected by mass and distance. The greater the mass of an object, the greater the attraction; the farther apart the objects, the weaker the attraction.

• A push or a pull.

• Attraction between two objects that is proportional to the masses of the objects.

Which is the best explanation of the term "planet"?

• A large celestial body that revolves around a star.

• The force that pulls two objects toward each other and is affected by mass and distance. The greater the mass of an object, the greater the attraction; the farther apart the objects, the weaker the attraction.

• A push or a pull.

• Attraction between two objects that is proportional to the masses of the objects.

How is weight different from mass?

• Weight is the measure of the pull of gravity on an object, and mass is the amount of matter in an object.

• Weight is the amount of matter in an object, and mass is the measure of the pull of gravity on an object.

• Weight is the measure of the pull of gravity on an object, and mass is the amount of space that an object fills.

• Weight and mass are no different from each other.

Planets A, B, C, and D have the same mass in the same solar system. They are listed in order from closest to farthest from the Sun. Which will experience the gravitational pull of the Sun the strongest?

• C

• B

• D

• A

What can scientists assume about the gravitational pull on a small planet located a great distance from the Sun?

• More information is needed to answer this question.

• The pull will be strong.

• The pull will be the same as on Earth.

• The pull will be weak.

Which of the following statements is NOT true?

• The Sun has the greatest gravitational pull because it is the most massive object in our solar system.

• The Moon revolves around the Sun.

• The planets follow an orbital path around the Sun.

• Gravity holds our solar system in place.

What does the law of universal gravitation state?

• Distance between two objects that have mass has no effect on gravitational pull.

• As the distance between objects with mass increases, the gravitational pull between those objects decreases.

• As the distance between objects with mass decreases, the gravitational pull between those objects decreases.

• As the distance between objects with mass increases, the gravitational pull between those objects increases.