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!

Q1.Recall the units for pressure.

1/7

Q2.Recall the equation for pressure

2/7

Q3.The pressure in fluids causes a force at what angle to a surface?

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

5/7

Q6.A force of 2000 N acts over an area of 10 metre squared. Calculate the pressure.

6/7

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?

7/7

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!

Q1.Recall the units for pressure.

1/7

Q2.Recall the equation for pressure

2/7

Q3.The pressure in fluids causes a force at what angle to a surface?

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

5/7

Q6.A force of 2000 N acts over an area of 10 metre squared. Calculate the pressure.

6/7

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?

7/7

Video

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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'.

Q1.Recall the units for pressure.

1/6

Q2.What happens to pressure with an increased depth of a liquid?

2/6

Q3.Identify the force that is the upward force that a fluid exerts on a body floating in it.

3/6

Q4.Which of the following explains why an object may sink in water?

4/6

Q5.Which of the following explains why an object may float in water?

5/6

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)

6/6

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'.

Q1.Recall the units for pressure.

1/6

Q2.What happens to pressure with an increased depth of a liquid?

2/6

Q3.Identify the force that is the upward force that a fluid exerts on a body floating in it.

3/6

Q4.Which of the following explains why an object may sink in water?

4/6

Q5.Which of the following explains why an object may float in water?

5/6

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)

6/6

Lesson summary: Pressure in fluids

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