Year 9 - Science
Pressure
Hidden forces
Study Hub
Study Guides
This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores forces, deformation, Hooke's Law, moments, and work done. It covers pressure in liquids, atmospheric pressure, upthrust, and equilibrium, as well as simple machines and force-extension relationships, highlighting how forces affect motion, friction, and object deformation.
Lesson Summary
You will learn to describe and calculate pressure, the effect of a force acting over an area.
Key Notes
- Pressure is a measure of how concentrated a force is.
- Pressure = force ÷ area.
- Pressure is measured in newtons per square metre or per square centimetre.
- Another name for newtons per square metre is the pascal (Pa).
Vocabulary To Learn
- pressure: The effect of a force acting over an area.
- concentrated: When a force is concentrated on a small area the pressure is higher.
- newton per square centimetre: A unit for pressure.
- newton per square metre: The standard unit for pressure, and this is also known as the pascal (Pa).
Common Mistakes To Avoid
- Pressure and force are terms that are often used interchangeably.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Pressure is a measure of how concentrated a force is. Pressure = force ÷ area.
2. Define this scientific word and use it in context. 'pressure'
The effect of a force acting over an area. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pressure and force are terms that are often used interchangeably. Correction: Explore examples with pupils in which similar sized forces are used to create different pressures that the pupils can experience first hand.
More Lessons In This Unit
Browse all guides in the Year 9 Science guide library.