# Hydraulics

This lesson explores what hydraulics are and how they work. We will learn to calculate the pressures and forces in a hydraulic system.

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.Complete the sentence, "Pressure in Liquids acts ..."

1/6

Q2.Complete the sentence, "Pressure in liquids decreases with ..."

2/6

Q3.Why are dam walls built thicker at the bottom?

3/6

Q4.Which statement is correct?

4/6

Q5.Why do submarines need reinforced hulls?

5/6

Q6.We say that the forces from pressure in liquids act in which directions to a surface? (Select four)

Select four (4) boxes

6/6

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.Complete the sentence, "Pressure in Liquids acts ..."

1/6

Q2.Complete the sentence, "Pressure in liquids decreases with ..."

2/6

Q3.Why are dam walls built thicker at the bottom?

3/6

Q4.Which statement is correct?

4/6

Q5.Why do submarines need reinforced hulls?

5/6

Q6.We say that the forces from pressure in liquids act in which directions to a surface? (Select four)

Select four (4) boxes

6/6

# 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:

# Hydraulics

Q1.Which state of matter is used for hydraulic fluid?

1/5

Q2.Which of the below is the BEST description of pressure in a hydraulic system?

2/5

Q3.If the area of the output piston is three times bigger than the input piston, what will happen to the output force?

3/5

Q4.Which of the below is a unit for pressure? (Tick 3 boxes)

Select three (3) boxes

4/5

Q5.Calculate the pressure produced when a force of 0.4kN is applied to an area of 2m² . Give your answer in N/m²

5/5

Quiz:

# Hydraulics

Q1.Which state of matter is used for hydraulic fluid?

1/5

Q2.Which of the below is the BEST description of pressure in a hydraulic system?

2/5

Q3.If the area of the output piston is three times bigger than the input piston, what will happen to the output force?

3/5

Q4.Which of the below is a unit for pressure? (Tick 3 boxes)

Select three (3) boxes

4/5

Q5.Calculate the pressure produced when a force of 0.4kN is applied to an area of 2m² . Give your answer in N/m²

5/5

# Lesson summary: Hydraulics

## 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:
Dance