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Flic-‐Flac Experiment 17/10/2014
Aim: The aim of the investigation is to create a jumping toy called a flic-‐flac and observe what happens when stored energy is released. Hypothesis: When the flic-‐flac is bent back and finally released, the stored energy from the rubber band will make the flic-‐flac jump in the air. Equipment: ! 2 pieces of thick cardboard ! 2 rubber bands ! sticky tape ! hole punch ! 2 matchsticks ! scissors ! ruler(s)
Method: 1. Collect two pieces of cardboard (10 x 10cm / 7.5 x 7.5 cm / 5 x 5 cm) and punch a hole in each end. Make
the holes about 1 centimetre from the edge in the middle
2. Sticky tape the two cardboard pieces together in the middle to create a hinge (the hinge is opposite the holes)
3. Thread one end of the rubber band through one of the holes in the card. Place a matchstick through the loop of the rubber band and place one strip of sticky tape over the matchstick
4. Repeat process on other piece of cardboard using the same rubber band
5. ‘Set’ the flic-‐flac by bending it inside out. Place it on a desk and hold it down with your finger. When you move your finger away, the flic-‐flac should jump into the air
Diagram:
Results:
1 Rubber Band
2 Rubber Bands
Test 1 – 39cm
Test 1 – 67cm
Test 2 – 44cm
Test 2 – 65cm
Test 3-‐ 34cm
Test 3 – 73cm
Test 4 – 48cm
Test 4 – 53cm
Test 5 – 52cm
Test 5 – 59cm
Conclusion: Did you enjoy the experiment / Did the experiment work why/why not? / Analyse results / Aim /
Hypothesis / What would you do differently next time? – problems?
