# Pressure in fluids

In this lesson, we concentrate on pressure in fluids, and in particular how pressure changes in liquids. By the end of the lesson you will be able to calculate pressure in a column of water, and also explain why objects sink or float.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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!

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## Q4.Identify all the things you could do to reduce the pressure exerted on a surface.

Select two (2) boxes

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## Q5.Identify all things you could do to increase the pressure exerted on a surface.

Select two (2) boxes

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## Q7.An elephant creates 12000 Pa of pressure on its four feet, which have a total area of 3 metres squared. What is the weight of the elephant?

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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!

1/7

2/7

3/7

## Q4.Identify all the things you could do to reduce the pressure exerted on a surface.

Select two (2) boxes

4/7

## Q5.Identify all things you could do to increase the pressure exerted on a surface.

Select two (2) boxes

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# 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.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Pressure in Fluids

This quiz will assess your knowledge and understanding of the lesson 'pressure in fluids'.

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## Q6.A small dam has a wall of 50 m. Calculate the pressure exerted by the water at the bottom of the dam. (g = 10 N/kg, density of water = 1000 kg/m³)

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Pressure in Fluids

This quiz will assess your knowledge and understanding of the lesson 'pressure in fluids'.

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# Lesson summary: Pressure in fluids

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The next lesson in Forces is "Atmospheric pressure"