Year 11 - Maths
Compound measures for pressure
Compound measures
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit, pupils explore the multiplicative relationship between different compound meaures and units such as speed, rates of pay, density and pressure.
Lesson Summary
You will learn to use compound measures for pressure.
Key Notes
- Pressure can be calculated by dividing the force on the objects by the area on which the force acts.
- The units for force and area determine the units for pressure.
- By rearranging the formula, you can calculate either force or area.
Vocabulary To Learn
- Pressure: Pressure is the perpendicular force applied to the surface of an object per unit area over which that force is distributed.
- Force: A force is a push or a pull on an object. A force is an influence that can cause an object to change its speed.
Common Mistakes To Avoid
- Using the total surface area of the solid rather than the area of the solid that is in contact with the floor/table.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Pressure can be calculated by dividing the force on the objects by the area on which the force acts. The units for force and area determine the units for pressure.
2. Use this key word in a maths sentence and explain it clearly. 'Pressure'
Pressure is the perpendicular force applied to the surface of an object per unit area over which that force is distributed. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Using the total surface area of the solid rather than the area of the solid that is in contact with the floor/table. Correction: Refer back to the high-heeled shoe and elephants foot example. This should clarify that it is the area in contact with the foot that increases or decreases the pressure.
More Lessons In This Unit
- Advanced problem solving with compound measures Study Guide
- Checking and further securing understanding of direct proportion in context Study Guide
- Combining densities Study Guide
- Combining speeds Study Guide
- Compound measures for density Study Guide
- Compound measures for speed Study Guide
- Converting between metric and imperial speed measures Study Guide
- Converting between metric speed measures Study Guide
- Converting between other compound measures Study Guide
- Problem solving with compound measures Study Guide
Browse all guides in the Year 11 Maths guide library.