Solar Oven Ideas

1. Physics To Win It: Heat Is on challenge Solar Oven Ideas

2. Why Solar Ovens • Go Green • http://www.youtube.com/watch?v=KIap7v3NHZ4 • Nature Conservancy: Haiti • http://www.youtube.com/watch?v=shqgNSC1O3M • Pizza Box • http://www.youtube.com/watch?v=xbwliZJiHe8

3. Your Mission • To design a solar oven that will create the most thermal energy in 45 minutes using common supplies (cardboard boxes (shoe box, pizza box, larger box, etc.) tin foil, plastic wrap, newspaper, etc.) • You must work in groups of 3 or 2 (need team name) • You will calculate volume of oven (minimum of 1,000cm3, joules of energy converted, and power of oven • You can choose to bring ingredients from the provided recipes (only) to make something for your group/self

6. Provided Items • Tin foil (about 4 sheets (8.5x11)) • Plastic wrap (about 4 sheets of 8.5x11) • 2 sheets black paper (which I would like back at the end) • Glue, staples, tape (not very strong)

7. Items Your Team Must Provide • The container (be creative!) • Extra tin foil (if needed) • Extra plastic wrap (if needed) • Insulation (if needed) • Substitutes for any of the above materials (for example: if you want plexi-glass or something more heavy duty then plastic wrap) • Any pre-cooked food items (basically we are only melting or re-heating foods for safety reasons, must come packaged)

8. WARNINGS: • Please use caution when cutting cardboard, especially with sharp scissors or exacto knives • Please only bring food that is pre-cooked and packaged • DO NOT LOOK DIRECTLY AT THE SUN!

9. Calendar of Events • 4/2/13 Tuesday: Create Teams, Team Name, Brainstorm Ideas, preliminary list of materials • 4/8/13 Monday: GUARDIAN SIGNATURE is REQUIRED. In class time to research design and materials wanted • 4/9/13 Tuesday: Final proposal of design, materials, and recipe (if cooking food) • 4/16/13 Tuesday: ALL MATERIALS DUE (in class time to assemble solar oven) • 4/17/13 Wednesday: COMPLETED SOLAR OVEN DUE • HEAT IS ON CHALLENGE DAY: TBD because of weather (hopefully 4/17/13 Wednesday)

10. Rough Draft Proposal • Team Name: • Team Members: • Possible Materials, quanities and Rational/Explanation FOR ALL MATERIALS DESIRED: • Design Sketch and LABELED!

11. Grading Requirements For Each Group • Materials Proposal/Solar oven trial 1 (requirements coming) 20pts. • Solar Oven, materials must be approved before hand (rough draft proposal) 20pts. • (temperature must be raised to at least 100 degrees F ) • Calculations and final conclusion questions 10pts.

12. Final Proposal • Team Name: • Team Members: • Hypothesis: estimated final temperature _______ • Possible Materials, quanities and Rational/Explanation FOR ALL MATERIALS DESIRED: • Design Sketch and LABELED!

13. Warm-up 4/8/13 • Teach the Teacher: Would you rather be caught picking your nose or picking a wedgie? • Review: For every action there is an _______ and equal reaction.

14. Warm-up 4/11/13 • Teach the Teacher: What is the best thing to do on a snow day? • Review: What kind of energy does the sun produce (fission or fussion?)

15. Warm up 4/12/13 • Teach the Teacher: What is the best kind of cookie? • Review: What is the units for energy?

16. Warm-up 4/16/13 • Teach the Teacher: What was your favorite movie when you were kid? • Review: What is the definition of temperature?

17. Warm-up 4/15/13 • Teach the Teacher: What is the best place to take little kids in Rapid? • Review: What is newton’s first law?

18. Warm-up 4/18/13 • Teach The Teacher: What is the most annoying animal? • Review: What is the gravity #?

19. Warm-up 4/19/13 • Teach the Teacher: How do you like your eggs cooked (scrambled, sunnyside, etc)? • Review: What is specific heat?

20. Warm-up 4/25/13 • Teach The Teacher: What is the worst house chore? • What is the best? • Review: What exactly does temperature measure?

21. Warm-up 4/26/13 • Teach the Teacher: What is the song of choice today? • Review: What type of energy depends on your position(height)?

22. Dice It • Different Types of Shoes

23. Dice It • Names of People in TV shows

24. Dice It! • Types of Chemical Energy

25. Dice it! • Examples of KE

26. Dice It! • Where do we get electrical energy from?

27. Dice It! • Examples of nuclear energy

28. Dice it! • Examples of things that need electricity

29. Dice It • Examples of things that have potential energy

30. What did they learn they can and can’t do? • Rules? • IDs? • Security guards? • How to be successful? • How to deal with drama? • How to pass classes? • Clubs to join? • Activities to go see? • What’s the best lunch? How to make new friends?  • Students can be as creative/funny as they want and still be appropriate. 

31. Warm-up 4/30/13 • Teach the Teacher: What kind of tattoo should I get? • Review: What is thermal energy?

32. Solar Oven Trial 1 • 1.What were some (at least 2) environmental factors that affected the heat in your oven? Brainstorm ideas to counteract these environmental factors next time. • 2.What design modifications would you make to improve your oven’s maximum temperature?

33. Warm-up 5/1/13 • Teach the Teacher: Any May Day stories? • Review: What happens to particles in conduction? • (mosh pit)

34. Warm-up 5/2/13 • Teach the Teacher: What is the best kind of doughnut? • Review: What is convection?

35. Warm-up 5/3/13 • Teach the Teacher: Would you rather always have sticky fingers or always have bad breath… • Review: What is the difference between conduction and convection (mosh pit vs. lava lamp)?

36. Warm-up 5/6/13 • Teach the Teacher: Who is the best super villain? • Review: What is it called when Thermal Energy moves from a warm to cold substance?

37. Warm-up 5/7/13 • Teach the Teacher: What has been the best assignment of your freshman year? • Review: What is the kinetic and potential energy of particles in an object.

38. Solar Oven Trial 1 • 1.What were some (at least 2) environmental factors that affected the heat in your oven? Brainstorm ideas to counteract these environmental factors next time. • 2.What design modifications would you make to improve your oven’s maximum temperature?

39. Warm-up 5/8/13 • Teach the Teacher: Would you rather have a long summer break, or have a winter and summer break? • Review: Mechanical energy is what two things added together?

40. Warm-up 5/9/13 • Teach the Teacher: Do you like to eat fish? • Review: Temperature actually measures this……

41. Section 3 notes USING HEAT:

42. Heating Systems • Heating systems vary depending on climate • Before only stoves/fires used to heat: but is a slow process

43. Forced Air Systems • Furnace warms air, then spreads air using ducts and vents • Cool air is returned to be heated again • Most common in US

44. Radiator Systems • Closed metal container with hot water or steam • Through conduction, thermal energy passed to the surrounding air

45. Electric Heating Systems • Electric coils in floors heat surrounding air by conduction, then convection currents heats the rest of the room

46. Solar Heating • Buildings use the sun’s radiation in 2 ways • Passive: materials easily absorb radiation and heat naturally • Active solar: solar cells

47. Passive Solar Heating • Need lots of south facing windows

48. Active Solar Heating • Uses solar collectors, photovoltaic (PV) cells, or solar panels to create electricity or warm water to radiate heat

49. Thermodynamics • The study of how thermal energy, heat, and work are related • Heat and work increase TE • Heat can only move from warm to cold, unless work is done (think about rubbing your hands together)

50. Converting Heat to Work • Heat engine: converts thermal energy to mechanical energy • ME=____+_____ • Internal Combustion Engines: fuel is burned inside cylinders and turn heat to work • http://www.youtube.com/watch?v=w-j8QvsiAdU • Converts only 25% of heat to mechanical energy- 75% of heat is lost (that’s why coolant is needed!)