Unit 7 machines
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Machines are instruments that make work easier. There are two types of machines: simple machines and complex machines. Simple machines have one or two parts and include pliers, screwdrivers, bottle openers, and pencil sharpeners. Complex machines have many parts and include washing machines, electric screwdrivers, watches, and bicycles. All machines need energy to work, with some using fuels like those in cars, planes, and buses, others using electricity like hairdryers and electric drills, and some using human energy like staplers and scissors.
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Simple machines are tools that make work easier. They include the lever, wheel and axle, pulley, inclined plane, wedge, and screw. Each machine allows us to lift, pull, push, cut or hold objects with less effort than using just our muscles alone.
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Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Unit 7 machines
- 1. UNIT 7. MACHINES AND INVENTIONS 1. MACHINES AND ENERGY
- 2. A machine is an instrument that makes work easier
- 3. There are two types of machines: Simple machines Complex machines
- 4. SIMPLE MACHINES • Simple machines are called tools and they don’t have many parts. They often have one or two parts
- 5. PLIERS are simple machines
- 6. A SCREWDRIVER is a simple machine
- 7. A BOTTLE OPENER is a simple machine
- 8. A PENCIL SHARPENER is a simple machine
- 9. A HAMMER is a simple machine
- 10. complex MACHINES Complex machines have many parts. They have more than two parts.
- 11. A WASHING MACHINE is a complex machine
- 12. An ELECTRIC SCREWDRIVER is a complex machine.
- 13. A WATCH is a complex machine
- 14. A BICYCLE is a complex machine
- 15. ALL MACHINES NEED ENERGY TO WORK.
- 16. Most machines that help us move burn fuels A car A planeA bus need fuel
- 17. Other machines use electricity A hairdryer An electric drill need electricity
- 18. Some machines use human energy A stapler scissors need energy from people
- 19. Some machines use energy from the… sun wind water They produce very little pollution.