Friction Vocabulary and Concepts

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🔬 Part 1: Prior Learning — Light Concepts

Let's check what you remember from our unit on light!

1. Which of the following is a light source?

The Moon

A mirror

The Sun

A window

2. Tick all the statements about shadows that are correct.

Shadows form on the opposite side of an object from the light source.

Transparent materials block all light and create dark shadows.

The size of a shadow can change depending on where the light source is.

Light travels in straight lines.

3. Complete the sentence: Light cannot pass through opaque materials, which means they ___________________________________________.

📖 Part 2: Friction Vocabulary Matching

Draw a line to match each word to its correct definition.

Friction

Surface

Resistance

Lubricant

Grip

A substance used to reduce friction between two surfaces.

A force that slows down or stops movement between two objects in contact.

The outer layer or texture of an object.

The ability to hold firmly onto something without slipping.

A force that pushes back against motion.

✏️ Part 3: Friction in Action

Use what you know about friction to answer these questions.

4. Give one example where friction is helpful and explain why.

5. Give one example where friction is unhelpful and explain why.

6. Mia slides a book across a rough wooden table and then across a smooth glass surface. On which surface will the book travel further? Explain your answer using the word friction.

7. Why do the soles of trainers have a textured (bumpy) pattern on them?

8. 🌟 Challenge: A cyclist wants to go faster. Suggest two changes they could make to reduce friction, and explain how each one helps.

Change 1: ___________________________________________________________________________

How it helps: ______________________________________________________________________

Change 2: ___________________________________________________________________________

How it helps: ______________________________________________________________________

Friction Vocabulary and Concepts

Friction Vocabulary and Concepts

🔬 Part 1: Prior Learning — Light Concepts

📖 Part 2: Friction Vocabulary Matching

✏️ Part 3: Friction in Action

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