Force and Motion Vocabulary Unit 2

the force of attraction between objects, such as the attraction between Earth and objects on it.

• force

• gravity

• work

• science

Tags

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forces that cancel each other out because they are equal in size and opposite in direction

• wedge

• screw

• unbalanced force

• balanced force

forces that cause a change in the motion of an object

• friction

• balanced force

• unbalanced force

• work

Tags

NGSS.MS-PS2-2

a force that acts between two touching objects and that opposes motion

• fulcrum

• work

• unfriction

• friction

the use of a force to move an object over a distance

• naps

• work

• inclined plane

• wedge

a machine with few or no moving parts that you apply just one force to

• simple machine

• screw

• pulley

• wheel & axle

the balance point of lever that supports the arm but does not move

• fulcrum

• wedge

• pulley

• wheel & axle

Tags

NGSS.MS-PS2-1

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a simple machine made up of a bar that pivots or turns on a fixed point

• wheel & axle

• pulley

• lever

• screw

a simple machine that is a slanted surface

• inclined plane

• wedge

• screw

• pulley

a simple machine made of a post with an inclined plane wrapped around it

• wheel & axle

• pulley

• wedge

• screw

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2