science lesson

1. 1

2. inclined plane

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

5. 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

6. wedge

7. 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

8. 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

9. 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

10. screw

11. 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

12. 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

13. The 6 Simple Machines
1. Lever 3. Pulley
4. Wheel and Axle 6. Wedge5. Screw
2. Inclined Plane

14. 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

15. 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