# What impact do gears, levers and pulleys have on forces?

In this lesson, we will first aim to understand the purpose of simple machines. We will then focus on gears, levers and pulleys to find out how they work and how they can be useful. We will also complete some questions throughout the lesson which will help us check our understanding.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Upthrust is also known as...

1/4

Q2.What would have a higher density?

2/4

Q3.If the upthrust is less than the weight of the object, the object will

3/4

Q4.If the upthrust is equal to the weight of the object, the object will...

4/4

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Upthrust is also known as...

1/4

Q2.What would have a higher density?

2/4

Q3.If the upthrust is less than the weight of the object, the object will

3/4

Q4.If the upthrust is equal to the weight of the object, the object will...

4/4

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# What impact do gears, levers and pulleys have on forces?

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which of these is NOT an example of a simple machine?

1/4

Q2.Which of these items uses a lever?

2/4

Q3.Which of these items uses a pulley system?

3/4

Q4.Which of these items uses gears?

4/4

Quiz:

# What impact do gears, levers and pulleys have on forces?

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which of these is NOT an example of a simple machine?

1/4

Q2.Which of these items uses a lever?

2/4

Q3.Which of these items uses a pulley system?

3/4

Q4.Which of these items uses gears?

4/4

# Lesson summary: What impact do gears, levers and pulleys have on forces?

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga