Pressure

16 March 2023
3.5 Pressure between solids
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Slide 1: Slide
PhysicsSecondary EducationAge 12,13

This lesson contains 15 slides, with interactive quizzes and text slides.

Items in this lesson

16 March 2023
3.5 Pressure between solids

Slide 1 - Slide

Content objectives
  • State that pressure is the pushing effect of a force
  • Write and use the equation that links pressure, force, and area
  • Explain how the unit of pressure can be worked out from the units of force and area

Slide 2 - Slide

Remember?

Slide 3 - Slide

Examples of solid

Slide 4 - Slide

Which nail is easier to hammer into the wood?
A
B
C
D

Slide 5 - Slide


Which nail is easier to hammer into the wood?
A
B
C
D

Slide 6 - Poll

Which nail is easier to hammer into the wood?
A
B
C
D
Condition: 
- same amount of Force
WHY A
- more pointed
- less surface area

Slide 7 - Slide

A sharp knife can cut a tomato easier.

Slide 8 - Slide

A sharp knife can cut a tomato easier.

Slide 9 - Slide

How could you increase the pushing effect of a force (pressure)?
  • Increase (make higher) the FORCE you put
  • Decrease (make lower) the SURFACE AREA of the object - more pointed or sharper

Slide 10 - Slide


Which is the correct equation that links pressure, force, and area?

Slide 11 - Poll

The formula triangle
Links between pressure, force, and area

Slide 12 - Slide

Group work
timer
1:00
  • Work together to complete the given exercise correctly.
  • Submit or share your output when done.

Slide 13 - Slide

Plenary (Sharing)

Slide 14 - Slide

What's next?
Friday: Pressure calculations

Slide 15 - Slide