CCK Gravity Review!

What is gravity?

• A force that pushes objects away from each other.

• The natural pull of objects toward each other.

• A type of invisible energy that makes things float.

• The force that makes objects move sideways.

What would happen to life on Earth without the force of gravity?

• Everything would become lighter.

• All objects would float off into space.

• The Earth would stop spinning.

• Water would turn into ice.

Which scientist was the first to seriously study gravity over 300 years ago?

• Albert Einstein

• Galileo Galilei

• Isaac Newton

• Stephen Hawking

When discussing gravity, what does the term "down" refer to?

• Away from the Earth's surface.

• Towards the Earth's North Pole.

• Towards the center of the Earth.

• Towards the Earth's South Pole.

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What two factors primarily determine the strength of the gravitational pull between two objects?

• Their mass and the distance between them

• Their size and their speed

• Their density and their temperature

• Their color and their shape

As a spaceship travels from Earth towards the Moon, how does the gravitational pull it experiences change?

• Earth's gravitational pull increases, then the Moon's gravitational pull increases.

• Earth's gravitational pull decreases, then the Moon's gravitational pull increases.

• Both Earth's and the Moon's gravitational pulls decrease.

• Both Earth's and the Moon's gravitational pulls increase.

What did Astronaut Dave Scott's experiment on the Moon, dropping a hammer and a feather, demonstrate?

• Heavier objects always fall faster than lighter objects.

• Objects fall at the same rate regardless of their mass in a vacuum.

• Air resistance is stronger on the Moon than on Earth.

• Gravity does not exist on the Moon.

Why do objects on Earth appear to fall at different speeds, even though gravity pulls on all objects equally?

• Objects with greater mass fall faster.

• Objects with less weight fall slower.

• The presence of air resistance.

• The object's material composition.