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Tyre Tread Analysis Investigation
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Tyre Tread Analysis Investigation
🔍 Part 1: Tyre Tread Analysis
1. Match each tyre type to its primary use by drawing lines between them:
Deep, chunky tread pattern
Smooth, minimal tread
Wide, heavy-duty tread
Road/highway driving
Heavy vehicles/trucks
Mud/off-road terrain
2. Which scientific concept explains why different tyre treads provide better grip on different surfaces?
Gravity
Friction
Magnetism
Density
3. When a vehicle brakes suddenly and leaves skid marks, what type of energy transformation occurs?
Chemical energy → heat energy
Kinetic energy → heat energy
Potential energy → kinetic energy
Heat energy → kinetic energy
4. Fill in the blanks: The law of conservation of energy states that energy cannot be _____________ or _____________, only _____________ from one form to another.
Energy cannot be _____________ or _____________, only _____________ from one form to another.
🚗 Part 2: Accident Scene Investigation
5. You find tyre marks that are 15 metres long on a dry road surface. What can you infer about the vehicle's movement? (Check all that apply)
The vehicle was braking
The vehicle was travelling at high speed
The vehicle was accelerating
Energy was converted to heat through friction
6. Explain how the length of skid marks can help investigators determine the speed of a vehicle before an accident:
7. A heavy truck leaves wider, deeper tyre marks than a small car. Using scientific concepts, explain why this occurs:
8. At an accident scene, you observe the following tyre mark pattern. Draw arrows to show the likely direction of vehicle movement and label what type of vehicle movement this represents:
9. How might tyre tread analysis be used as evidence in a court case? Provide two specific examples:
🧪 Part 3: Scientific Investigation Design
10. Design an experiment to test which tyre tread pattern provides the best grip on wet surfaces. Include:
Hypothesis: _________________________________________________
Variables to control: ____________________________________
Method (3 steps):
11. What safety considerations would be important when conducting tyre tread experiments?
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