https://padlet.com/retmaniarkarima/r6hcyyvz7l4onlxf Student Instruction of sound experiment en-us 2021-08-10 03:52:29 UTC 2021-08-10 07:51:38 UTC hello@padlet.com nanggusde https://padlet.com/retmaniarkarima/r6hcyyvz7l4onlxf/wish/1673849755 1. Prepare tools and materials
a. 3 curtains
b. 2 small tables
c. 2 smartphones (one as a sound source and one as a measuring tool (fizziq app))
2. Activity Steps
a. Students are invited to a closed room.
b. Place two small tables 1 m apart.
c. One student are asked to play the music from a smartphone and another student was asked to measure the noise level of the music with the fizziq application, then record it using fizziq (oscillogram).
d. Students are asked to put one layer curtain between two tables with same distance (0.5 m).
e. Students are asked to play the music and measure the noise level.
f. Students are asked to add one layer of curtain again so there are two curtains now.
g. Then, students are asked to play the music and measure the noise level again.
h. Students are asked to add one layer of curtain again so that it becomes three curtains.
i. Then students are asked to turn on the music and measure the noise level.
j. Based on the measurement results, students are asked to compare the noise levels.
k. Students are asked to draw conclusions from the results of the experiment.]]> 2021-08-10 07:27:40 UTC https://padlet.com/retmaniarkarima/r6hcyyvz7l4onlxf/wish/1673849755