Sustainable Homestead Project Activity 3 - Light

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 .

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?

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?

Work sheet 3 light