2. Imagine for Design #1
• Idea #1
• Our materials are dark cloth to absorb heat and Cotton balls
it insulate the heat
• We need 1 unit of dark cloth=1sheet and 2 units of cotton
balls=2cups
• The advantage of this idea is that dark cloth would b good to
absorb the heat and make the box.
• The disadvantage of the materials is that we might not have
enough Cotten balls for the experiment
Monday, May 20, 13
3. Imagine for design #2
• Idea #2
• Our materials are white colored cloth and the green colored
foam
• We need 1 unit of white colored cloth= 1sheet and 2units of
green colored cloth=2sheets
• The advantage of this idea is that the white colored cloth will
insulate the heat and the green foam is a little dark so it will
absorb the heat
• The disadvantage is they the white colored cloth may not
insulate the heat as much as we want
Monday, May 20, 13
6. Plan for design #1
Materials Units
We will use the
material
Cotton balls 2 units
Tape them and
smash them to
have more
space to cover
Black cloth 1 unit
Place on
bottom and to
absorb heat
Monday, May 20, 13
7. Impact score for design #1
Design
#1
Reduce
Natural or
processed Reuse Recycle
Total
Points
Cotton
balls
Black
cloth
3 units Processed No No 7 points
1 unit Processed Yes No 2 points
Our total impact score is 9 points
Monday, May 20, 13
8. Solar oven testing in the sun
Time Tempeture
0 minutes 25°C
5 minutes 52.4°C
10 minutes 52°C
15 minutes 54°C
20 minutes 55.7°C
25 minutes 54.6°C
Monday, May 20, 13
9. Solar oven testing in the
shade
Time Tempeture
1 minutes 47.7°C
2 minutes 41.9°C
3 minutes 36.7°C
4 minutes 34.8°C
5minutes 32.7°C
6 minutes 31°C
Monday, May 20, 13
10. Create for deign #1
• Our heat score is our solar oven maximum
temperature subtracted from the control oven
56°C-55=1
• Our time score is the number of minutes it took
to cool down which was 4 minutes
• Our total impact score was 9
• Our total score for the solar oven is -4
Monday, May 20, 13
11. Improve for design #1
• The total score for our solar oven design was -4
• The parts of our solar oven design that worked well were the
black cloth because it absorbed a lot of heat that we wanted
to
• The parts of our solar oven design that did not work well were
the cotton balls because they didn't insulate the heat like we
wanted to
• We will improve our heat score by have some dark foam
because those dark colors will absorb more heat and also but
felt on the bottom
Monday, May 20, 13
14. Plan for design #2
Materials Units
How will we
use the
material
Felt 1 sheet
We will leave it
flat
Colored foam 1 sheet
We will leave it
flat
Black foam 1 sheet
We will leave it
flat
Monday, May 20, 13
15. Impact score for design #2
Design#
2
Reduce
Natural
Or
Processed
Reuse Recycle
Total
points
Felt
Colored
foam
Black foam
1 unit Processed No No 4 points
1 unit Processed No Yes 2 points
1 unit Processed No No 4 points
Our total impact score is 10 points
Monday, May 20, 13
16. Solar oven design#2 the sun
Time Tempeture
0 minutes 16°C
5 minutes 25.9°C
10 minutes 27.9°C
15 minutes 28.5°C
20 minutes 30.3°C
25 minutes 39.1°C
30 minutes 40.4°C
Monday, May 20, 13
17. Solar oven in the shade
design #2
Time Tempeture
1 minute 31.9°C
2 minutes 26°C
3 minutes 23°C
4 minutes 21°C
5 minutes 19.7°C
6 minutes 18.8°C
7 minutes 18.2°C
8 minutes 17.7°C
9 minutes 17.3°C
10 minutes 17.1°C
Monday, May 20, 13
18. Create for design #2
• Our heat score is our solar oven maximum
temperature subtracted from the control oven:
40°C - 41°C= -1
• Our time score is the number of minutes it took
to cool down witch was 4 minutes
• Our total impact score was 10 points
• Our new total score is -7 points
Monday, May 20, 13
19. Reflection
• Our improved design did not work because the
green foam did not insulate enough. The black foam
did not keep the heat in the heat as we thought
because dark colors absorb heat, so we thought that
it would hold it in.
• If we could improve again, we would get newspaper
to insulate the heat and take out the black foam and
the green foam and keep the red felt. The
newspaper will go on the sides and a little bit on the
outside of the felt while the felt is in the middle.
Monday, May 20, 13
