1. Sustainable Homestead Project
Activity 3 - Light

2. Activity 3 – what is happening with natural and artificial light in your class room
Look at different materials and their colours and how they reflect and absorb light. Think about rough and smooth materials .

3. Activity 3 – what is happening with natural and artificial light in your class room
Take 6 materials from the box and lay them out on the bench – choose 3 carpet bits and 3 tile bits of similar colours. Put them in order of most to least reflective. Test their reflectivity by shining a torch on the material at 45o and then hold the big white ‘eye’ of the lux meter at 45o the other way. Where you correct?

4. Activity 3 – what is happening with natural and artificial light in your class room
Have a look around the room and fill in the activity sheet using the lux meter
Working the lux meter:
Take the black over off the ‘eye’ of the meter – this is where it gets its reading
use the dial to turn onto the lux settings x100 etc. FC at foot candles use in the US
If you are outside you will need to go to a higher power 1000x because it is brighter
We measure at desk or bench height, why do you think that is?

5. Work sheet 3 light