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(O SIMPLE MACHINES, , Simple Machine isa machine that uses a single force to do work and mate it easy., ~ simple machines do not increase or decrease the amount of work tobe done., ~ Suspense Pole einen eg Sena, , | L, }, , ©O@CUGe QR, , , , , 1. What is a simple machine? How does it make work easier?, , 2. Name six simple machines giving examples of each., , 3. What is a lever? Give some examples where levers are used., , A. How can levers be classified? Give examples for each class of lever., , 5. Define: (a) inclined plane (b) wheel and axle (c) wedge (d) screw, , 6. What is the difference between inclined plane and wedge?, , 7. What is the difference between a simple and a complex machine?, , 8. What is a pulley? How does it make our work easier?, , 9. Why is it easier to push a heavy bag up a ramp than carrying it up a staircase?, , B. Fill in the blanks., , 1. A simple machine uses a force., , 2. Asimple machine changes the of force to make work easier., 3.A_ is any simple machine that turns around a fixed point., 4. Wheelbarrow is an example of class lever., , 5 force is needed to move objects with an inclined plane., , 6A ——_is used to hold things together., , I, , -A_____ isan example of a simple machine made up of two inclined, planes that meet to form a sharp edge., , . Shoelaces are a kind of, _ 9. Machines that are made up of many parts are called machines., _ 10. When the load is between fulcrum and it is called a second class lever