By:Candice Santos and Katherine Li Simple Machinesblogs.henrico.k12.va.us/.../2018/...Simple-Machine.pdfA inclined plane is a very useful simple machine 5. We use simple machines everyday.

Simple MachinesBy:Candice Santos and Katherine Li

Compound machines1. A bicycle is an example of a compound machine that uses a chain to transfer force.2. The chain runs around two separate toothed wheels, which act as pulleys.3. One is attached to the axle of the rear wheel.4. The other is attached to the pedals through an axle.5. The pedals work like the crank of a wheel-and-axle machine.6. The force used to turn the pedals becomes a stronger turning force on the axle and its toothed wheel. The chain

transfers the force to the rear wheel and makes it turn.7. In some bicycles the chain can be shifted between toothed wheels of different sizes.8. This changes the amount of force the rider needs to turn the rear wheel.

Inclined plane1. A inclined plane is like a ramp2. A inclined plane can be a ladder, stairs ,and a stairway railing3. A inclined plane makes work easier by helping people get to a higher floor easier4. A inclined plane is a very useful simple machine 5. We use simple machines everyday.6. A inclined plane can be made a into a compound machine. 7. A inclined plane can do a lot of useful things like making work easier.8. A inclined plane can be slope or steep

lever1. An lever as a simple machine that we use everyday. 2. An lever can push, pull, or lift something.3. An lever can be a seesaw, ax handle,and a baseball bat, and a toilet handle,and a light switch. 4. An lever have different parts like a fulcrum.5. An lever is a device that does physical task6. An lever is a bar or board that rests on a support called a fulcrum.7. An lever can do all sorts of things.8. An lever is a very useful simple machine we use everyday

Pulley1. Another simple machine is a pulley.2. The form of a pulley is a wheel and a rope with one end attached to the load.3. The function of a pulley is it allows us to move a load up down or sideways.4. Another definition is:A pulley is a wheel with a rope or something similar around its edge.5. The pulley changes the direction of the force applied to one end of the rope.6. For example, by pulling down on one end of the rope, a person can lift an object attached to the other end.7. Pulleys can help us in many, many ways8. Think about it, can you live without a pulley for one day?

Screw1. A screw is used to hold things together like boards to a wall.2. A screw can be a faucet, water bottle cap, and merry-go-round.3. A screw is a thin rod with edges, or threads, that curve around it. 4. Turning a screw produces a force that can push the screw into wood or tighten it against a nut.5. Similar threads are used on jars and other containers so that lids close tightly.6. A screw is an inclined plane wrapped around a post.7. Many screws have a head and a pointed end.8. Most screws also have threads that go around the post.-

Wedge1. A wedge is a simple machine.2. Sometimes a wedge is two inclined planes put together.3. The function of a wedge is to use it to separate things by cutting, piercing, and splitting.4. A example of a wedge would be an axe, the tip of scissors, saw, and a knife.5. A wedge would be something we use every day.6. A wedge is a piece of material that narrows to a thin edge.7. Pushing the wedge in one direction creates a force in a sideways direction.8. The head of an ax is a wedge.

Wheel and Axle1. A wheel and axle is a simple machine too..2. The form of the wheel and axle is a circular frame that moves around a rod.3. The function of a wheel and axle is a wheel rotates around a fixed rod which decreases force.4. An example of a wheel and axle is: a bike wheel, and a car wheel.5. An axle is a shaft, or rod, that is fixed to the center of a wheel.6. In some wheel-and-axle machines the wheel is replaced with a crank or another part that turns in a circle like a

wheel.7. A steering wheel in a car is a wheel-and-axle machine.8. Another example is a doorknob.

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