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# More simple machines g3

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# More simple machines g3

science lesson

science lesson

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### More simple machines g3

1. 1. 1
2. 2. inclined plane
3. 3. Ch. 10 , Lesson 6 ( More Simple Machines ) • What is an inclined plane? • Is a flat surface that is higher at one end. It is also called . Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 3 Inclined plane4 Ramp
4. 4. Ch. 10 , Lesson 6 ( More Simple Machines ) • How it makes work easier? • To raise the stone you have 2 paths: 1-straight up, it is shorter but takes more effort 2-the ramp is more distance, but needs less effort. Egyptians used ramps to build pyramids. Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 5
5. 5. wedge
6. 6. Ch. 10 , Lesson 6 ( More Simple Machines ) • . made up of 2 inclined planes back to back. • Use force to raise, split ,or cut things. • Ex. An ax Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 7 Wedge5
7. 7. Ch. 10 , Lesson 6 ( More Simple Machines ) • When an ax is swung, the downward force is changed into sideways force. • The sideways force pushes, or split the wood apart. Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 8
8. 8. Ch. 10 , Lesson 6 ( More Simple Machines ) Ex.2-A plow . A machine used by farmers, as it is dragged through the soil, it cuts through the ground and soil is pushed aside. Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 9
9. 9. screw
10. 10. Ch. 10 , Lesson 6 ( More Simple Machines ) • . inclined plane wrapped around a center pole. = inclined plane wrapped into a spiral • used to hold things together & to raise & lower things Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 11 Screw6
11. 11. Ch. 10 , Lesson 6 ( More Simple Machines ) the ridges of the screw are called threads. It takes less force to turn a screw than to pound a nail? because the screw is moving a longer distance less force needed to do work Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 12
12. 12. The 6 Simple Machines 1. Lever 3. Pulley 4. Wheel and Axle 6. Wedge5. Screw 2. Inclined Plane
13. 13. Ch. 10 , Lesson 6 ( More Simple Machines ) What happens if you put 2 simple machines together? . when you put 2 or more simple machines together. Ex. Pair of scissors Part is a lever + part is a wedge. Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 14 Compound machine
14. 14. Ch. 10 , Lesson 6 ( More Simple Machines ) Ex. A water faucet Part is a wheel and axle + part is a screw. Ex. A bicycle Part is a wheel and axle + part is a lever. Vocabulary: ramp Inclined plane wedge screw Compound machine Objectives: I will be able to know: Simple machines make work easier. 15