NGSS.MS-PS2-1

Studies motion, forces, and energy to explain the way things work

• physicist
• geologist
• biologist
• ecologist

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NGSS.MS-PS2-1

If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the reaction force is

• exerted on the table
• exerted on all the other billiard balls.
• not present
• exerted by the billiard ball on the cue ball.

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NGSS.MS-PS2-1

You hit a wall with a stick.  The equal but opposite reaction is _____

• the wall pushes against you
• the stick pushes against you
• you push against the stick
• the wall pushes against the stick

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NGSS.MS-PS2-1

Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Law 1
• Law 3

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NGSS.MS-PS2-1

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

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NGSS.MS-PS2-1

If these teams 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

Newton’s third law of motion states that for every action there is an equal and opposite reaction. How does this law differ from a theory?

• A theory explains a set of well tested observations; a law describes a pattern in nature.
• Laws can be changed with the addition of new evidence but theories cannot.
• A law explains a pattern in nature in more detail than a theory. 
• Theories are based on more evidence than laws.

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NGSS.MS-PS2-1

Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?

• The ribbon will move to the left and group A will win the tug-of-war.
• The ribbon will move to the left and group B will win the tug-of-war.
• The ribbon will move to the right and group B will win the tug-of-war.
• The ribbon will move to the right and group A will win the tug-of-war.

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NGSS.MS-PS2-1

What is motion?

• A change in position.

• A change in force.

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NGSS.MS-PS2-1

Newton's third law of motion can best be described as:

• what goes up must definitely - or eventually - come down.

• for every action there is an equal but opposite reaction.

• something that can only be explained using calculus.

• how & why rockets work in the airless vacuum of space.

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NGSS.MS-PS2-1