Unit 7.5

Unit 7.5

1. What is a simple machine ?

   • It's a machine that makes jobs easier

2. How many types of simple machines are there?

   • there are 7
     • they are levers,ramps,wedges,screws,pulleys,wheels and gesars

3. What are force multipliers ?

   • Machines used to magnify the force you apply to do a job.

4. What is a lever

   • It's a machine made from a long ,rigid object,such as stick or metal rod

5. What is an axle ?

   • The center of a wheel is called an axle.