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Examples: uInclined planes make the work of moving things easier. You would need less energy and force to move objects with an inclined plane. uThe longer the slope of the inclined plane the easier it is to pull or push the heavy object up or down the inclined plane. uAn inclined plane is a flat surface that is higher on one end. You can use this machine to move an object to a lower or higher place.  Ramp  Slanted Road  Path up a Hill  Slide

uAn object that a lever moves is called the load. The closer the object is to the fulcrum, the easier it is to move. Examples: uA lever is a board or bar that rests on a turning point. This turning point is called the fulcrum. uThere are many different kinds of levers. One of them is like a see-saw. There is a load on one end, and when the person pushes one end down the load on the other side will move. A hammer is a lever when it is used to pull a nail out of a piece of wood. Bottle openersCrow barsSeesaw Crow bar Hammer

uA wedge is made up of two inclined planes. These planes meet and form a sharp edge. This edge can split things apart. Examples: uA wedge is a simple machine used to push two objects apart. KnivesAxes Door stopper Nails

uA screw is a simple machine that is made from another simple machine. It is actually an inclined plane that winds around itself. Examples: uSome screws are used to lower and raise things. They are also used to hold objects together. Jar Lids Light BulbsStools Clamps Wrenches Key Rings Spiral Staircase uA screw has ridges and is not smooth like a nail.

uPulleys let you move loads up, down, or sideways. Pulleys are good for moving objects to hard to reach places. It also makes the work of moving heavy loads a lot easier. Examples: uThis simple machine is made up of a wheel and a rope. The rope fits on the groove of the wheel. One part of the rope is attached to the load. uWhen you pull on one side of the pulley, the wheel turns and the load will move. Flag Poles Clothes LinesSailboat Window Blinds Crane

uThe wheel and axle is another simple machine. The axle is a rod that goes through the wheel. This lets the wheel turn. It is easy to move things from place to place with wheels and axles. Examples: Cars Roller Skates Wagons & Wheelbarrows Door Knobs Gears in Watches, Clocks, and Bicycles

1. Simple machines make work easier. A. True A. True B. False B. False Click on the best answer

2. A fork is an example of a: A. pulley. A. pulley. B. wedge. B. wedge. C. wheel and axle. C. wheel and axle. Click on the best answer

A. a ball and chain. A. a ball and chain. 3. A pulley is made up of: B. a rope and wheel. B. a rope and wheel. Click on the best answer

4. A roller skate is an example of a: A. wheel and axle A. wheel and axle B. wedge B. wedge C. lever C. lever Click on the best answer

5. This simple machine is made up of two inclined planes. A. screw A. screw B. wedge B. wedge C. pulley C. pulley Click on the best answer

6. The bottom of a light bulb would be considered a: A. wedge. A. wedge. B. screw. B. screw. C. lever. C. lever. Click on the best answer

7. The fulcrum is the turning point of a(n): A. lever. A. lever. B. pulley. B. pulley. C. inclined plane. C. inclined plane. Click on the best answer

8. A ramp is an example of a(n): A. pulley. A. pulley. B. screw. B. screw. C. inclined plane. C. inclined plane. Click on the best answer

9. A screw is both a(n): A. wedge and lever. A. wedge and lever. B. lever and inclined plane. B. lever and inclined plane. C. pulley and inclined plane. C. pulley and inclined plane. Click on the best answer

10. A seesaw on the playground is a(n): A. lever. A. lever. B. inclined plane. B. inclined plane. C. pulley. C. pulley. Click on the best answer

11. A wheel and axle can be used to: A. pull an object towards you. A. pull an object towards you. B. help you travel around. B. help you travel around. C. both (A) and (B). C. both (A) and (B). D. neither (A) or (B). D. neither (A) or (B). Click on the best answer

12. You would use a pulley to: A. cut food. A. cut food. C. help guide the sail on a sailboat. C. help guide the sail on a sailboat. B. hold pieces of wood together. B. hold pieces of wood together. Click on the best answer

13. An object that a lever moves is called a: A. weight. A. weight. C. load. C. load. B. force. B. force. Click on the best answer

14. The shorter the slope of the inclined plane the easier it is to pull or push an object up or down the inclined plane. A. True A. True B. False B. False Click on the best answer

15. You would use a lever to: A. pull a box up a ramp. A. pull a box up a ramp. C. pull the flag up on the flagpole. C. pull the flag up on the flagpole. B. pull a weed out of a garden. B. pull a weed out of a garden. Click on the best answer

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