FORCES - CATAPULTS

LEARNING OBJECTIVES

To know that how much an elastic band stretches depends on the force acting on it
To make careful measurements of length

To represent data in a line graph and use this to identify patterns in the data

YOUR CHALLENGE:
To design a fair test involving propelling Agent Eggy Bond over a wall to pursue Jaws - the egg box.

1. Watch the videos below.

2. Discussion
What have you learnt about forces in catapults?
What happens if we manipulate one of the forces?
Can we make the trajectory longer?

3. Devise a testable question based on understanding of forces eg:

the longer the arm of the catapult, the further the egg will travel
OR
the thicker the elastic bands, the further the catapult will travel.

What are you going to investigate?
Write your question in the comments below.

4. Design your catapult and draw a labelled picture of your model.

Look at the example below.

5. Create a standard model and an adapted model and see which one
propels the egg the furthest.

6. Remember: Fair Testing
Create a fair test to test out your theory.

7. Predict what will happen?

8. Some vocabulary to help you.
Stretch
Potential energy
Push
Pull
Trajectory
Gravity

9. Conclusion
What did you find out through your investigation?
Was your prediction accurate?

10. Think of the best way to present your findings to the class.

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Would the material used for the launcher make a difference?

2 years ago
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2 years ago
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This is our catapults

2 years ago
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2 years ago
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Great job guys. Fantastic work on your designs. Don't worry you will get a chance to try out your designs tomorrow.