Embedded Files
Introduction
Introduction
Air pressure acts on surfaces due to the collision of air molecules with that surface. In this unit you will learn how to calculate the pressure acting on a surface and in fluids, there is a reason your ears pop on aeroplanes and when you dive deep underwater. We will cover how pressure is related to depth and also the density of fluids and the implications this has on floating objects, such as ships.
Specification links:
Task 1: Know
Task 1: Know
Task 1b: Listen to the podcast to get an overview of this topic:
Learn
Learn
Task 2: Pressure and Surfaces
Task 2: Pressure and Surfaces
Task 2a: Read through the slides and the BBC bitesize page:
Task 2b: Make notes that:
Define pressure
Give the equation to calculate pressure and Give the unit.
Define the unit of pressure
Explain why it is possible to lie on a bed of nails without injury.
Task 2c: Complete these questions (answers are on slide 18)
Task 2d: Complete the exam questions
Task 3: Pressure in a liquid at rest
Task 3: Pressure in a liquid at rest
Task 3a: Watch the 2 videos:
Task 3b: Read through the slides and the BBC Bitesize pages
Task 3c: Make notes that:
Explain how pressure is related to depth,
Copy and Label the diagram below to help your explanation.
Give the equation to calculate the pressure in a column of liquid
Explain why liquids flow - Draw a diagram as part of your answer.
Draw a labelled diagram of a manometer
Explain how a manometer can be used to measure gap pressure.
Task 3d: Work through the questions on slides 17 and 18.
Task 3e: Complete the Checkpoint Quiz
Task 4: Atmospheric Pressure
Task 4: Atmospheric Pressure
Task 4c: Make notes that:
Explain what causes atmospheric pressure, include a diagram.
Explain why the marshmallows expand in this video
Explain why the water boils in this video
Explain why the Magdeburg hemisphere can’t be pulled apart in this video
Explain how we use atmospheric pressure to move liquids up through a straw - include a diagram
Task 4d: Answer the questions (answers on slide 22)
Task 4e: Complete and mark the exam question
Task 5: Upthrust and Flotation
Task 5: Upthrust and Flotation
Task 5c: Make notes that:
Explain why helium balloons and hot air balloons float.
Define upthrust
Draw a diagram showing the relative size forces acting on a submerged object and the effect this will have.
Describe the conditions needed for an object to float.
Describe the conditions needed for an object to sink.
Task 5d: Answer the questions (answers on slide 20)
Task 5e: Complete the BBC Bitesize Quiz
Task 6: Summary
Task 6: Summary
Task 6a: Watch the video:
Task 6b: Complete the Seneca task:
Task 6c: Make a mind map or single page revision summary of this topic. Use the specification links to help you.
Task 7: Check
Task 7: Check
Complete the quiz, ensuring you achieve the pass mark, to check your understanding of this unit.
Extend
Extend
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