Year 7 - Science
Friction
Forces
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit focuses on quantifying and comparing energy transfers in different processes, such as motion changes, electrical circuits, and fuel burning. It examines forces as interactions between objects, using diagrams and measurements, including contact and non-contact forces.
Lesson Summary
You will learn to describe the characteristics of friction forces, explain what causes friction and describe how friction can be reduced.
Key Notes
- Friction is the force of one surface gripping or rubbing on another.
- Friction prevents or slows down movement between surfaces.
- Friction is caused by the roughness of surfaces.
- Lubricants are substances added between two surfaces to reduce friction.
Vocabulary To Learn
- friction: Friction is the force of one surface rubbing or gripping on another.
- rough: Rough surfaces are uneven or irregular, they are not smooth.
- irregularities: An irregularity is something different to what is expected.
- microscopic: If something is microscopic, it is so small you need a microscope to be able to see it.
- lubricant: A lubricant is a substance added between two surfaces to reduce friction.
Common Mistakes To Avoid
- Friction is not a force.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Friction is the force of one surface gripping or rubbing on another. Friction prevents or slows down movement between surfaces.
2. Define this scientific word and use it in context. 'friction'
Friction is the force of one surface rubbing or gripping on another. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Friction is not a force. Correction: Provide examples of friction slowing objects and preventing them from moving when they are pushed.
More Lessons In This Unit
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