science lesson

1. levers

2. Ch. 11 , Lesson 3
Levers
What is a simple machine?
Is a tool that makes moving
an object easier.
It uses force to move object, or
load from place to another.
You need a lot of force to move a
heavy object, if you use a simple
machine…it is easier.
Vocabulary:
Simple machines
Lever
fulcrum
Objectives:
I will be able to know:
1-How Levers lift
objects.
2-define simple
machines and
understand how they
work.
2
Simple machine

3. Ch. 11 , Lesson 3
Levers
What is a lever?
Is a simple machine.
It is a bar rests on a fixed
point or a fulcrum.
It looks like a seesaw.
Vocabulary:
Simple machines
Lever
fulcrum
Objectives:
I will be able to know:
1-How Levers lift
objects.
2-define simple
machines and
understand how they
work.
3
Lever

4. Ch. 11 , Lesson 3
Levers
 To use a lever, you put a
load on one side of the bar.
 When you put force on the
other side, the load is
lifted.
Vocabulary:
Simple machines
Lever
fulcrum
Objectives:
I will be able to know:
1-How Levers lift
objects.
2-define simple
machines and
understand how they
work.
4

5. Ch. 11 , Lesson 3
Levers
How do we use levers?
We can find levers in many
tools.
 A hand truck.
 A pair of scissors.
.
Vocabulary:
Simple machines
Lever
fulcrum
Objectives:
I will be able to know:
1-How Levers lift
objects.
2-define simple
machines and
understand how they
work.
5

6. Ch. 11 , Lesson 3
Levers
 A car jack.
 A crowbar
Used to pry things apart.
.
Vocabulary:
Simple machines
Lever
fulcrum
Objectives:
I will be able to know:
1-How Levers lift
objects.
2-define simple
machines and
understand how they
work.
6