Science Hurumanu

Solar Energy

Catching the sun movie

Materials:

1. Four cups 
2. One large cup 
3. Water
4. Tin foil
5. 2 sheets of white paper
6. 1  sheet of black paper
7. Thermometer
8. One heat lamp

Steps

1. First we got into groups of 4-5 and then got all the materials to start our experiment.
2. Then we filled the cups with water and then placed the cups on a piece of white paper, black paper or tin foil. For a small cup that sits on a piece of white paper we placed a larger cup over the top. 
3. After preparing the experiment, we turned on a heat lamp to pretend as sun. 
4. After 40 minutes we used a thermometer to see the temperature of each cup. After recording the results we turned the heat lamp off.  
5. We waited 15 minutes before recording the next lot.
6. 15 minutes later we recorded them again and some went up and down.
7. We waited 15 minutes before recording the last lots.
8. 15 later we recorded them again and some went up and down.

Which surface conducts / attracts the most heat?

Time + temperature	Cup 1 White paper	Cup 2 White paper+ plastic.	Cup 3 Black paper	Cup 4 Tinfoil
0	8	8	8	8
40 minutes	12	11	22	20
55 minutes	13	13	20	19
70 minutes	14	14	19	16

Findings:

Before we started all the water in the cups were at 8 degrees. Then 40 minutes later we used a thermometer to see the temperatures of the water, which were 12, 11, 22 and 20. Then 15 minutes later we tested them again and got 13, 13, 20, 19. Then another 15 minutes later we tested them again and got 14, 14, 19 and 16.