Revision- sounds

05.06.2020
08:54:42

Science/ grade 4- Today’s topic for revision- sound volume- learner’s book - pages 60 and 61.

Main points-
The volume of a sound is how low loud or soft the sound is.

We measure sound in units called decibels.

We can use a sound level meter to measure the volume of sounds.

Small vibrations cause soft sounds.

Large vibrations cause loud sounds.

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