forces learning objectives: 1. to know the units forces are measured in. 2. to know what equipment...

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Forces Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure the force of objects in the classroom.

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Page 1: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

ForcesForcesLearning objectives:

1. To know the units forces

are measured in.

2. To know what equipment is used to measure a force.

3. To be able to measure the force of objects in the classroom.

Page 2: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

What is a force?What is a force? Here are some ways of describing forces:

A push A pull

A stretch A squeeze A catch A twist

We can’t see forces but we can see the effects of a force.

Page 3: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

Forces can make things:Forces can make things:

Speed up Slow down

Change directionChange shape

Page 4: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

Measuring forcesMeasuring forcesForces are measured in newtons.

We can write this as N.

We use a Newton meter to measure forces.It is sometimes called a force meter.

Page 5: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

Have a look at the Newton Have a look at the Newton meter:meter:

What do you notice about this instrument that measures forces?

What objects would this instrument not be able to measure the force of and why?

Page 6: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

Today’s tasks:Today’s tasks:You are going to complete worksheet 1.

You are going to work in groups and measure the force of different objects in the classroom using a Newton meter. You will record your findings in a table.

We will then discuss our findings.

Page 7: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

What did we find out?What did we find out?

What object had the biggest force?What object had the smallest force?

Challenge: can you find an object that has a force of exactly 3 N?

Which object has a force greater than 5 N?

Page 8: Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure

Quick quiz!Quick quiz!1. What is a force?2. Can you see forces?3. Can you name any effects that forces

have?4. What units do we measure forces in?5. What instrument do we use to measure

force?6. What is this instrument also known as?

How did you score??!

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