Chapter 2 - Forces and Motion

____________ is the force of attraction between any two objects.

• Magnets

• Gravity

• Force

• Friction

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

__________ is a push or pull that acts on an object.

• Gravity

• Friction

• Force

• Contact Force

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NGSS.MS-PS2-2

NGSS.MS-PS2-1

_________ is the force that results when two materials rub against each other.

• Gravity

• Friction

• Force

• Uniform motion

Besides a strength or magnitude, what does every force have?

• Gravity

• Friction

• Direction

• Magnetism

What happens when an object accelerates?

• Its speed or direction changes.

• Only its speed changes.

• Only its direction changes.

• Its speed and direction do not change.

_________ is the rate of which the speed or the direction of motion of an object changes over time.

• Inertia

• Friction

• Acceleration

• Uniform Motion

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NGSS.MS-PS2-2

_______ is the tendency of an object to resist any change in motion.

• Inertia

• Friction

• Acceleration

• Uniform Motion

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NGSS.MS-PS2-2

________ is the motion where the speed and direction do not change.

• Acceleration

• Uniform Motion

• Inertia

• Friction

A ball is rolled across four different surfaces with the same force. Which surface will slow the movement of the ball the most?

• Tile floor

• Paved road

• Grassy field

• Cement sidewalk

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NGSS.MS-PS2-2

NGSS.MS-PS3-4

________ has two forces of equal strength that combine to act on the same object but in opposite directions.

• Net force

• Uniform Motion

• Balanced

• Combined force