Learning Task 5:
Create a wave box that demonstrates how earthquake waves can travel through a variety of materials as they travel away from the focus of an earthquake where the rocks first rupture, All earthquakes produce P waves and s waves. P waves travel through solids, liquids and gases in this simple science experiment, you will see how p waves travel through different solids causing paper clips on a string to vibrate. + YO Materials: Box, String, Paper clips, Nail or ice pick Procedures:

1. Remove one side of a cardboard box.

2. Punch a hole in the top and bottom of the box using a nail or ice pick

3. Tie a string so it runs from the top of the box to the bottom of the box.

4. Start by tying a string to a paper clip on the outside of the box at the top.

5. Thread the string through the bottom of the box and tie the string to a paper clip on the bottom of the bax.

6. Place 4 or 5 paper clips on the string inside the box.

7. Place the box on a table or some other object you can strike to make it vibrate.

8. Strike the table hard enough to cause energy waves to travel through it to the box.

9. Move your box to another surface and see if you can make the paper clips vibrate on these surfaces.

10. Change the experiment by using a different thickness of string,

11. Change the experiment by using different sizes of paper clips.

GUIDE QUESTIONS:

1. What will happen to the paper clips if you have struck the table hard enough

2. Why does vibrations create sound?


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