Materials Needed:1. Rubber band
2. Plastic bowl
3. Big saucepan
4. Piece of heavy plastic
5. Uncooked rice
7. Scissors
8. Large spoon
9. Tape
Click here for step-by-step directions
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Vocabulary Terms:
Sound: energy that is moving away from a vibrating object.
Wave: a transfer of energy as it moves away the source.
Echo: repetition of sound due to reflection of sound waves.
Click here to veiw the Mini-Lesson
Tennessee Content Standards (3rd grade):
Grade Level Expectation 0307.11.3-
Investigate how the pitch and volume of a sound can be changed.
State Performance Indicator 0307.11.3-
Distinguish between pitch and volume
Videos of my results...
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Report & Observations:
I found that the harder you hit the saucepan the more the rice bounces. The sound waves travel through the air & hit the plastic which makes it vibrate & bounce the rice. I alo tried taking the experiment a step farther by using 2 different sized saucepans (large & small). I concluded that the large saucepan works the best with this experiment because the soundwaves from the smaller saucepan barely made the rice bounce.
Visit the links below for some extra fun!
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Great job! Great information. I did this one at home using broken pieces of spaghetti and that also works really well.
ReplyDeleteGreat job! I love how informative you have been explaining this experiment and how sound can be seen. I love your video, as well (as long as the sound is down)! Wonder what other objects would be able to be used to see the sound moving?
ReplyDeleteGreat Job! I really like how you connected this experiment and the 3rd grade content standards.
ReplyDeleteOr you could turn the volume up and have the sound make the students hearts pound...so they could "feel" sound too! :)
ReplyDeleteVery Good job. I love all the info.
ReplyDelete