Gravity and Forces Review

Every force is either _________________________.

• good or evil

• silly or serious

• up or down

• a push or a pull

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What is true about all forces?

• they are unbalanced

• they involve more than one object

• they cause objects to move

• they cancel each other out

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What is true about the force of gravity?

• it does not affect all objects

• it is a push

• it is a pull

• it cancels out the other forces

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According to Sir Isaac Newton, gravity depends on two factors. What are they?

• Mass and distance

• Volume and density

• Size and shape

• Mass and volume

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How does the Sun's gravity compare to the Earth's gravity?

• The Sun's gravity is stronger

• The Earth's gravity is stronger

• Their gravitational pull is the same

• Scientists aren't able to measure the Sun's gravity

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According to Newton's laws, what might happen to the Earth if its orbit moved farther away from the Sun?

• The Sun's gravitational pull on the Earth would increase

• The Earth's gravitational pull on the Moon would increase

• The Sun's gravitational pull on the Earth would stay the same

• The Sun's gravitational pull on the Earth would decrease

Which of these would have the strongest gravitational pull?

• A medium-sized planet

• A large, dense star

• A small moon

• A comet

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The more massive two objects are, the stronger their ________

• stink

• force of gravity

• hunger

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The further apart two objects are,

• the stronger the force of gravity between them.

• the weaker the force of gravity between them.

• the more drag they have.

Rotation ______________________

• is one object going around another.

• is spinning in place on an axis

• is why we have seasons

• takes a full year

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