Energy Project Purpose: To build a “system” that will “cook” food using energy transfer in the form of convection.

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Presentation transcript:

Energy Project Purpose: To build a “system” that will “cook” food using energy transfer in the form of convection.

Challenge: To build the most efficient, functional solar oven to “cook” a marshmallow Challenge: To build the most efficient, functional solar oven to “cook” a marshmallow

Requirements All solar ovens must meet the following design modifications: 1.An internal elevated cooking surface 2.An elevated thermometer to collect temperature data for 10 minutes at a time (it cannot touch sides, bottom or top of oven) 3.You must change at least one thing between trials. You will be running at least 3 trials. 4.Unique designs and materials recommended 5.Teacher will provide the heat source (sun: 100W light bulb) 6.A standard height for heat source will be provide by teacher. (10cm) 7.Teacher will provide the thermometer to measure temperature inside oven.

Grade Criteria (90pts) Project grade will be determined by group and individual grades Group grade (50pts) Each group will create a Final plan that must include: Written procedure in paragraph form (NO personal pronouns) Drawings or pictures List of group member List of materials Neat and No spelling errors

Grade Criteria (cont…) Individual Grade (50pts.) Each person must provide a preliminary plan that includes: written instructions (NO personal pronouns, in paragraph form) and with pictures A data table with two trials and temperature measured every minute for 20 minutes and observation recorded A graph with all temperature data All post lab questions answered in complete sentences Neat with NO spelling errors

Daily Grade Rubric Daily GradePoints Earned Cleaned the work area and worked until told to clean up. 5 points Did not clean up or was not working the entire time. 0 points

Performance Rubric PerformanceCriteria 15 pts. Temp is within 90% of best All criteria met 12 pts. Temp is within 75% of best 9 pts. Temp is within 50% of best 6 pts. Temp is within 25% of best 3 pts. Temp is within 10% of best 0 pts. Temp is less than 10% of best Not all criterion are met

Oven Lab Conclusion Questions: 1.List the modification you made to your oven and explain why you did each. 2.Which modification had the greatest impact on the increase in temperature within your oven? Why? 3.What modification do you wish you had done? (If you could redo this project what would you do differently?) 4.If you had 2 identical ovens but oven #1 was 5 times larger than oven #1, which one would be the most efficient? And Why?

Conclusion Questions cont…. 5.What type of energy is coming from the light? 6.What type of energy (electromagnetic radiation) is cooking your marshmallow?