2. Imagine for design #1
page 1
• Our materials are sand,Cotten balls and foam.
• We need 1 unit of sand,1 unit of foam,and 1 unit of
Cotten balls.
• The advantage of this idea is that the sunlight will go
to the sand on the bottom of the box and heat up the
sand and the sand will heat the box up.
• The disadvantage of this idea is that if the materials
over heat then the materials will burn.
Monday, May 20, 13
3. Imagine design #1
page 2
• Are materials are sand,and
foil.
• We need 2 units for foil,and 1
unit for sand.
• The advantage of this idea is
that the sand,and the foil will
heat up the box,and we will
get a higher score.
• The disadvantage is that the
foil will burn up and not work
any more,or burn the box.
Monday, May 20, 13
6. Plan design #1
Materials Units
We will use
the materials
Cotton balls
Sand
Foam
1 unit
On top of the sand
an the bottom of the
solar oven
1 unit On bottom of solar oven
1 unit
On the sides
of solar oven
Monday, May 20, 13
7. Impact score for design #1
Design
#1
Reduce
Natural or
processed Reuse Recycle
Total
points
Sand
Cotton
balls
Foam
1 unit Natural Yes Yes
-2
points
1 unit Processed No No 4 points
1 unit Processed No Yes 2 points
Total points 4
Monday, May 20, 13
8. Solar oven tasting
Time Temperature
0 minutes 25.0 °c
5 minutes 46.9 °c
10 minutes 47.0 °c
15 minutes 55.3 ° c
20 minutes 46.8 °c
25 minutes 55.6 ° c
Monday, May 20, 13
9. Solar oven in the shade
Time Temperature
1 minutes 44.8°c
2 minutes 41.2°c
3 minutes 36.9° c
4 minutes 34.4° c
5 minutes 33.0° c
6 minutes 31.7° c
Monday, May 20, 13
10. Create
• 56.0°c - 55.0°c=1.0°c so
our heat score is 1.0°c
• It took our solar oven 4
minutes so our time score is
4 minutes
• Our total impact score is 4
points.
• Our total score for the solar
oven is 1 point.
Monday, May 20, 13
11. Improve
• The total score for are first solar oven was
1 point.
• The parts of our solar oven design that
did not work well where the foam did not
work as well as,and the cotton balls did
not work well either because the light
didn't really attract to those materials.
• The parts of our solar oven design that
did work well where the sand because the
sun heated up the sand and that heated
up the box.
• We are going to try to improve our heat
score .
• We are going to improve the heat score
by putting aluminum around the sides of
the box.
Monday, May 20, 13
14. Plan design #2
Materials Units
How will you use the
materials
Sand 1 unit
On the bottom of
the solar oven
Aluminum foil 2 units
On the side of
the solar oven
Monday, May 20, 13
15. Impact score #2
Design
#2
Reduce
Natural or
professed
Reuse Recycle Points
Sand 1 unit Natural Yes Yes 2 units
Aluminum
foil 2 units Processed No No 7 units
5 total units
Monday, May 20, 13
16. Solar oven testing in the sun
Time Temperature
0 minutes
5 minutes
10 minutes
15 minutes
20 minutes
25 minutes
Monday, May 20, 13
18. Creat for design #2
• Our heat score is our solar oven maximum
temperature subtract from the control oven
99-53=46
• Our time score is the number of minutes it took to
cool down witch was 10 minutes
• Our total impact score was 5 points
• Our total score for the solar oven is 46+10-5=51
so our total is 51
Monday, May 20, 13
19. Reflection
• Our improved design worked well cause our
temperature went up and that's good that means that
we got better insulators. Our materials we changed
were we took out the foam and added aluminum foil
and took out the cotton balls. The materials worked
well because we got a higher score then we did the
first time.
• If we could improve again we would put shredded felt
in the box because it would make the box hotter.
Shredded materials makes the box hotter because it
takes up more space.
Monday, May 20, 13
