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Tuesday, April 18, 2006

Soolar Cooker Project


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Question and Hypothesis


My question is does a box cooker work better then a panel cooker?
My hypohesis is a box cooker does not work better then a panel cooker because the panel cooker has an extra side (panel) which reflects the sun onto the other sides.

Procedures


1. We researched on solar cookers until we found the right information and the right solar cooker we wanted to use.
2. We built our solar cooker the way the instructions on the web page told us.
3. Finally, we took our finished solar cookers outside and let them sit in the shade for five minutes.
4. We let our solar cookers sit in the sun for ten minutes.
5.Then we recorded our informaion down on a worksheet and answered questions about it.

Results


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Conclusion

I think my hypohesis is correct becuase I used all foil on my solar cooker and I had an extra side (panel) so the light reflected throughout my project.  In a box cooker, they used black paper.  Black paper is a good idea to use, but the sun is not reflected into the thermometer.  With foil, the sun light (energy) is bounced throughout my solar cooker.  Therefore, my tempriture was higher because the sunlight bounced off of the foil reflected off to the themometer.

Discussion

Instead of burning up coal which is a nonrenewable resource, you can you something like a solar cooker.  You don't have to burn up coal to use electricity.  Using the olar cooker, all you have to do is make sure there is sunlight and nothing covering it to work.  But, if it is a rainy day, your only problom is the solar cooker will not work.

Mr. Tubbs wanted us to compare our solar cookers to someone elses, so we could see the difference in the tpes of solar cokers.

What I observed during this projest was that the foil in a solar cooker bounces and reflects the sunlight.  I also learned that the black paper hold the sunlight and makes heat for the thermometer.

From this, I learned that to my opinion the panel cooker works bet with foil so it bounces areound, ans the box cooker works better with black paper so it cn hold the heat (energy) areound the thermometer.

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Posted by: maryh    in: My entries
Wednesday, January 4, 2006

Photosynthesis

How do plant cells make energy?

     Plant cells make energy by the leaves and the roots.  The reason why the leaves catch energy is because the leaves capture sunlight to make the plants energy.  The reason why the roots make energy is because the roots get moisture and water from when rain or water falls on the soil and it dropes to the root which takes in the water to make energy.

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The roots and leaves can produce energy and water together.

 

 

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Posted by: maryh    in: My entries
Thursday, September 15, 2005

what is my country?

1. It is south of the Equator. 2. It is east of the Prime Meridian. 3. It's landform is south west of the Himilais. 4. It is east of the Atlantic Ocean. 5. It is southwest of India. 6. It's relitive location to it's capital is 47 degrees south, and 17 degrees east.

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Posted by: maryh    in: My entries

Modified on September 16, 2005 at 9:03 AM
Monday, August 29, 2005

Tributary and Gulf



a small river or stream that flows into a smaller river or stream; a branch of the river.

a part of a large body of water that extends into a shoreline, genrelly larger and and more deeply indented then a bay

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Posted by: maryh    in: My entries

Modified on August 29, 2005 at 9:12 PM