2. Imagine for Design #1
Idea #1
Our materials are foam, sand , and
cotton balls.
We need one unit of each material that
we use.
The advantage of this idea is that sand
and cotton have a low environmental
impact, and cotton and foam are really
good insulators.
The disadvantage of this idea is that
foam has a high environmental impact.
Monday, May 20, 13
3. Imagine for Design #1
Idea #2
Our materials are foam, cotton balls, and cloth.
We need one unit of each of our materials.
The advantage of this idea is cotton and cloth are good
insulators and are reusable.
The disadvantage of this idea is that foam has a high
environmental impact and all our materials and none
recyclable.
Monday, May 20, 13
6. Plan for Design #1
material Units
We will use the
material
Cotton balls 1
Leave it
normal
Foam 1 Shredded
Cloth 1 Shredded
Monday, May 20, 13
7. Impact score for
Design#2
Design#1 Reduce
Natural
processed
Reuse Recycle Points
Foam
Cloth
Cotton
balls
1 unit Processed Yes No 4
1 unit Processed Yes No 1
1 unit Processed No Yes 2
7 points
Monday, May 20, 13
8. Solar oven in the sun
Time Temperature
0 min 25°c
5 min 37.9°c
10 min 41.3°c
15 min 56.6°c
20 min 59.4°c
25 min 60.3°c
Monday, May 20, 13
9. Solar oven s the shade
Time temperature
1 min 42.7°c
2 min 35.8°c
3 min 32.1°c
4 min 31.2°c
5 min 32.1° c
6 min 31.1°c
7 min 30.7°c
Monday, May 20, 13
10. Create
Our heat score is the maximum solar over
temperature subtracted from the control oven:
60 - 55= 5
The time score was the number of minutes it
took to cool down which was 2 minutes.
Our total score fore the solar oven was 7 points
Our total impact score was 0 points
Monday, May 20, 13
11. Improve for Design #1
Our total score for our first solar oven was 0 points.
The parts of our solar oven design the worked well were our
insulators because they allowed the temperature to rise.
The parts of our solar oven design that did not work so well
was the time due cause it took a long time to cool down.
We are going to try to improve our impact score.
We will improve our impact score b covering all the holes in
our oven so the heat will not escape because if it does then
there would e no heat in the oven.
Monday, May 20, 13
14. Plan for Design #2
Material UNits
How will we use
the material.
Foam 1 Cut into pieces
Cotton balls 1 Leave them be
Sand 1 Leave it be
Monday, May 20, 13
15. Impact score for Design
#2
Design #1 Reduce
Natural or
processed
Reuse Recycle Points
Foam
Sand
Cotton
balls
1 Processed No Yes 2
1 Natural Yes No 4
1 Processed No No 0
Total
impact
5
Monday, May 20, 13
16. Solar oven testing in the
sun
Time Temperature
0 min 24.4°C
5 min 40.7°C
10 min 47.2°C
15 min 46.8°C
20 min 47.3°C
25 min 49.9°C
30 min 47.2°C
Monday, May 20, 13
17. Solar oven testing in the
shade
Time Temperature
1 min 46.8°C
2 min 47°C
3 min 46.9°C
4 min 46.9°C
5 min 46.9°C
6 min 46.4°C
7 min 42.3°C
8 min 72.7°C
9 min 92.2°C
10 min 90.1°C
Monday, May 20, 13
18. Create for Design #2
Our heat score is our solar oven maximum
temperature subtracted from the control oven.
-3 + 10 - 6 = 1
Our time score is the number of minutes our solar
oven took to cool down which was 7 minutes
Our total impact score was 6 points
Our new total score for the solar oven is 1
Monday, May 20, 13
19. Reflection
Our improved design did not work because the
materials that we changed weren't placed
correctly. The materials we changed were poor
insulators like the sand because it let all the heat
out of our box. We changed the materials to white
foam, sand, and cotton balls. We originally used
yellow foam, cloth, and cotton balls.
If we could improve again we would use all yellow
foam because yellow foam is a good insulator. It's a
good insulator because our temperature increased.
Monday, May 20, 13
