Force, Motion, and Simple Machines

A push or pull on an object.

• gravity
• motion
• force
• speed

The tendency of an object to resist any change in motion is known as

• inertia
• speed
• newton
• joule

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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NGSS.MS-PS2-1

What is a force that opposes motion between two surfaces?

• friction
• acceleration
• velocity
• motion

What is the difference between mass and weight?

• mass is how much matter is in an object, and weight is the gravitational pull on that object
• mass and weight are the same
• weight affects how much mass is in an object
• weight is determined by how many atoms make up an object

which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

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NGSS.MS-PS2-2

The more mass an object has, the more ___________ it has.

• inertia
• motion
• momentum
• weight

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What object does it take the most force to push?

• car
• plane
• skateboard
• bicycle

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NGSS.MS-PS2-2

What can you say about the forces when neither side can move the other?

• The forces are balanced
• The gravity has increased
• The forces accelerate
• The force is with you

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NGSS.MS-PS2-1

What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules

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