2. Imagine Design #1
• Idea #1
• We are using shredded white cloth and putting it on the sides
of the box. We are also using shredded white foam and putting
it on the bottom of the box.
• We are using 1 unit of white cloth and 2 units of white foam.
• The advantages of this idea is that all of our materials are
insulators and they are all not colored. This means that they
didn't have to use ink.
• The disadvantages of this idea is that the foam is a bit far away
from being a material that hurts the environment least.
Monday, May 20, 13
3. Imagine Design #1
• Idea #2
• Our materials are shredded newspaper and putting it on
the bottom of the box. We are also using shredded pipe
insulation and putting it on the sides of the box.
• We need 2 units of newspaper and 1 unit of pipe insulation.
• The advantages of this idea is that the pipe insulation is
thick and colored black which attracts light.
• The disadvantages of this idea is that the pipe insulation is
second to last with hurting the environment.
Monday, May 20, 13
6. Plan Design #1
White cloth 1 unit= I sheet Shredded
White foam 2 units= 2 sheets Shredded
Monday, May 20, 13
7. Impact Score Design #1
Design
1
Reduce
Natural
Process
Reuse Recycle Total
White
cloth
1 unit
1 point
Process Yes No 2 points
White
foam
2 units
4 points
Process No Yes 5 points
7 points
Our total impact score is 7 points
Monday, May 20, 13
8. Solar Oven Testing in the Sun
Time Temp
0 mins 25.0°c
5 mins 58.9° c
10 mins 65.0° c
15 mins 73.4° c
20 mins 69.4° c
25 mins 70.0° c
Monday, May 20, 13
9. Solar Oven in the Shade
Time Temp
1 min 59.0 c
2 mins 48.2 c
3 mins 40.3 c
4 mins 34.4 c
5 mins 32.5 c
Monday, May 20, 13
10. Create Design#1
• Our heat score is our solar oven maximum
temperature subtracted from the control oven:
73.0 c - 55.0 c = 18.0 c
• Our time score is the number of mins it took to cool
down which was 4 mins.
• Our total impact score was 7 points.
• Our total score for the solar oven is 15.
Monday, May 20, 13
11. Improve Design #1
• The total score for our first solar oven was 15 points.
• The parts of our solar oven design that did not work well was that
some of the shade from the tree was on our solar oven so next
time we are staying as far away from shadows as possible.
• The parts of our solar oven design that did work well was the
material we used because they were very good insulators. We
knew this because our solar oven got up 73.4°c which was the
hottest oven of the grade.
• We are going to try to improve our heat score.
• We will improve our heat score by getting no where near the
shadows of trees.
Monday, May 20, 13
15. Impact Score Design #2
Design
#2
Reduce
Natural
process
Reuse Recycle
Total
points
White
foam
2 units
4 points
Process No No 7 points
Sand
1 unit
1 point
Natural Yes Yes -2
5 points
Monday, May 20, 13
16. Solar Oven Testing in Sun
Time Temp
0 mins 16.0°c
5 mins 34.5°c
10 mins 36.3°c
15 mins 36.7°c
20 mins 37.5°c
25 mins 38.3°c
30 mins 39.1°c
Monday, May 20, 13
17. Solar Oven Testing in Shade
Time Temp
1 min 31.5°c
2 mins 28.6°c
3 mins 26.2°c
4 mins 24.7°c
5 mins 23.5°c
6 mins 22.6°c
7 mins 22.1°c
8 mins 21.7°c
9 mins 21.2°c
10 mins 20.8°c
Monday, May 20, 13
18. Create Design #2
• Our heat score is our solar oven maximum temp
subtracted from the control oven:
39.0°c - 41.0 = -3.0
• Our time score is the number of mins it took to cool
down which was 9 mins.
• Our total impact score was 5 points.
• Our new total score for the solar oven is 1.
Monday, May 20, 13
19. Reflection
• Our improved design did not work well because we
changed our white cloth to sand. We know this wasn't
improved because our temp dropped 40° when
heating. Now we know that sand isn't a good
insulator.
• If we could improve our design again, we would
change our sand back to cloth because when we used
cloth in our first design, it insulated more than the
sand. I know this because our temperature was
higher when we used the cloth.
Monday, May 20, 13
