Mass Distance Effects of Gravity

What is the value of gravity on Earth?

• 20 m/s2

• 9.8 m/s2

• 100.4 m/s2

• 15m/s2

Choose the hypothesis from below.

• The golf ball hit the ground before the paper.

• Why would mass affect gravity?

• If objects are closer together, then there will be a stronger gravitational force.

• I think bigger objects have more gravity.

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What two things keep a planet in orbit?

• Free fall

• Moving at a high speed

• The sun

• Mass

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Gravity can be defined as the –

• force of attraction between two or more masses.

• friction created when two objects are in contact.

• energy given off by stars due to nuclear reactions.

• path an object follows as it moves through space.

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Two factors effecting the magnitude of the force of gravity between 2 objects are...

• weight and mass.

• distance and weight.

• mass and matter.

• mass and distance.

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The gravitational attraction between two objects would increase if both masses are –

• increased, and the distance between them is increased.

• increased, and the distance between them is decreased.

• decreased, and the distance between them is decreased.

• decreased, and the distance between them is increased.

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The force that causes objects with mass to attract to one another:

• Weight

• Mass

• Gravity

• Magnetism

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Why do planets orbit the Sun?

• The Sun is the only celestial object that has a gravitational pull.

• The Sun’s chemical composition makes it attract planets.

• Only celestial bodies that emit light, like the Sun, can be at the center of an orbit.

• The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.

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As distance between two objects increases, the pull of gravity 

• Increase

• decrease

• stays the same

• has not effect

Why are we pulled to Earth's center and NOT the sun's?

• The sun is very LARGE

• The sun is very FAR AWAY

• Earth has a STRONGER GRAVITY than the sun

• Earth ORBITS around the sun

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