Materials: styrofoam cup, 8 oz., heavy string, sharp pencil, paper clip, crayons, damp paper towel, lion head print out.
Procedure:
1. Print out the page of the lion's head onto cardstock.
2. Cut string into 50 cm pieces
3. Color and cut out the lion
4. Distribute a cup, string and paper clip to each student
5. Tie the paperclip to the string
6. Poke a small hole through the bottom of the cup, place the paperclip through the hole and lay flat on the inside of the cup
7. Cut out the circle of the lion's mouth
8. securely place the cup inside the lion's mouth, leaving the end with the paperclip sticking out the end.
9. grip the string between both ends of the damp paper towel and slowly pull the towel along the length of the string.
10. String will vibrate, causing the lion to 'roar'.
Connecting learning discussion questions:
1. Can sound travel along a string? How do you know?
2. Could you see the vibrations? How could you prove the system was vibrating?
3. What made the string vibrate?
4. Would we still get a noise if we didn't use the cup?
Lion Printout: Lion that roars
Step by Step Guide:
1.Print out Roaring Lion page
2. Cut out lion
3. Cut out the mouth, making sure the cup fits snugly
4. Poke a hole in the bottom of the cup, tie one of the string to the paperclip
5. Poke paperclip through bottom of cup so the paperclip is sitting inside the cup
6. Finally put the cup into the lion's mouth, take a damp paper towel and, pinching the string between the paper towel, move to slowly down the string. You should be able to not only hear the sound, but feel the vibration in the string.
