1. Activity 4 – Sound

2. Just like light gets reflected around a room differently if it comes of a smooth or rough surface so sound is affected by rough and smooth surfaces. This activity is about learning how to measure sound and the effect materials have on making things louder or less loud.

3.  Like km is for distance the measure for sound levels is decibels  40-50 dB is about right for a class room when you are trying to concentrate.. Any quieter people feel like it is too eerie and any louder it gets too distracting.  Have a play with the meter – can you work out what all the buttons do?

5.  The aim of this activity is to learn to use the meter and to think about different material and their affect on sound  Go through the activities outlined on your sheet