Sound Energy
Before Thanksgiving break, 4th grade students
completed projects to demonstrate their understanding of the different types of
energy. We had some amazing projects including puppet shows, power points, and
game boards.
Alex, from Ms. Helmcamp’s homeroom, wrote this piece about
her project about sound.
Sound is made when something vibrates or moves back and
forth quickly. The vibrations of the sound you are making travels through the
air in waves. Volume is how loud or soft something is.
The waves of loud sounds have a lot of energy and they can
travel pretty far. The waves of softer sounds have less energy and they don’t
really travel that far. Sound travels in longitudinal waves. Humans can hear
sounds from 20 to 20,000 cycles per second.
Here are some vocabulary words to know:
Pitch- how high or low a sound id
Amplitude – the measure of a sound wave
Echo – a reflection of sound
Sonic Boom – A shock that consists of compressed sound waves
created when something moves
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