WEEK27 PHYSICAL SCIENCE VOCABULARY. 1) FRICTION A force that opposes the motion of an object.

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WEEK27 PHYSICAL SCIENCE VOCABULARY

1) FRICTION A force that opposes the motion of an object

2)GRAVITY A force of attraction between objects

3) WORK Application of a force to an object to move it a certain distance in the direction of the force

4) MACHINE A device that makes work easier by changing the size or direction of a force

5) INCLINED PLANE A simple machine consisting of a straight, slanted surface

6) WEDGE A simple machine made up of an inclined plane that is wider or thicker at one end than at the other and is moved when in use.

7) SCREW A simple machine made up of an inclined plane that is wrapped around a cylinder

8) LEVER A simple machine made up of a bar that pivots at a fixed point called a fulcrum

9) PULLEY A simple machine made up of a rope or chain wrapped around a wheel; a load is attached to one end of the rope

10) WHEEL AND AXLE A simple machine that consists of two circular objects of different sizes