Solar oven ideas
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Physics To Win It: Heat Is on challenge. Solar Oven Ideas . 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. Your Mission .

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Solar oven ideas

Physics To Win It:

Heat Is on

challenge

Solar Oven Ideas


Why solar ovens

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


Your mission

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


Provided items

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)


Items your team must provide

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)


Warnings

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!


Calendar of events

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)


Rough draft proposal

Rough Draft Proposal

  • Team Name:

  • Team Members:

  • Possible Materials, quanities and Rational/Explanation FOR ALL MATERIALS DESIRED:

  • Design Sketch and LABELED!


Grading requirements for each group

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.


Final proposal

Final Proposal

  • Team Name:

  • Team Members:

  • Hypothesis: estimated final temperature _______

  • Possible Materials, quanities and Rational/Explanation FOR ALL MATERIALS DESIRED:

  • Design Sketch and LABELED!


Warm up 4 8 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.


Warm up 4 11 13

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?)


Warm up 4 12 13

Warm up 4/12/13

  • Teach the Teacher: What is the best kind of cookie?

  • Review: What is the units for energy?


Warm up 4 16 13

Warm-up 4/16/13

  • Teach the Teacher: What was your favorite movie when you were kid?

  • Review: What is the definition of temperature?


Warm up 4 15 13

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?


Warm up 4 18 13

Warm-up 4/18/13

  • Teach The Teacher: What is the most annoying animal?

  • Review: What is the gravity #?


Warm up 4 19 13

Warm-up 4/19/13

  • Teach the Teacher: How do you like your eggs cooked (scrambled, sunnyside, etc)?

  • Review: What is specific heat?


Warm up 4 25 13

Warm-up 4/25/13

  • Teach The Teacher: What is the worst house chore?

  • What is the best?

  • Review: What exactly does temperature measure?


Warm up 4 26 13

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)?


Dice it

Dice It

  • Different Types of Shoes


Dice it1

Dice It

  • Names of People in TV shows


Dice it2

Dice It!

  • Types of Chemical Energy


Dice it3

Dice it!

  • Examples of KE


Dice it4

Dice It!

  • Where do we get electrical energy from?


Dice it5

Dice It!

  • Examples of nuclear energy


Dice it6

Dice it!

  • Examples of things that need electricity


Dice it7

Dice It

  • Examples of things that have potential energy


Solar oven ideas

  • 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. 


Warm up 4 30 13

Warm-up 4/30/13

  • Teach the Teacher: What kind of tattoo should I get?

  • Review: What is thermal energy?


Solar oven trial 1

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?


Warm up 5 1 13

Warm-up 5/1/13

  • Teach the Teacher: Any May Day stories?

  • Review: What happens to particles in conduction?

  • (mosh pit)


Warm up 5 2 13

Warm-up 5/2/13

  • Teach the Teacher: What is the best kind of doughnut?

  • Review: What is convection?


Warm up 5 3 13

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)?


Warm up 5 6 13

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?


Warm up 5 7 13

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.


Solar oven trial 11

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?


Warm up 5 8 13

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?


Warm up 5 9 13

Warm-up 5/9/13

  • Teach the Teacher: Do you like to eat fish?

  • Review: Temperature actually measures this……


Section 3 notes

Section 3 notes

USING HEAT:


Heating systems

Heating Systems

  • Heating systems vary depending on climate

  • Before only stoves/fires used to heat: but is a slow process


Forced air systems

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


Radiator systems

Radiator Systems

  • Closed metal container with hot water or steam

  • Through conduction, thermal energy passed to the surrounding air


Electric heating systems

Electric Heating Systems

  • Electric coils in floors heat surrounding air

    by conduction,

    then convection

    currents heats the

    rest of the room


Solar heating

Solar Heating

  • Buildings use the sun’s radiation in 2 ways

    • Passive: materials easily absorb radiation and heat naturally

    • Active solar: solar cells


Passive solar heating

Passive Solar Heating

  • Need lots of south facing windows


Active solar heating

Active Solar Heating

  • Uses solar collectors, photovoltaic (PV) cells, or solar panels to create electricity or warm water to radiate heat


Thermodynamics

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)


Converting heat to work

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!)


Heat movers

Heat Movers

  • Heat movers move TE from one location to another at a different temp


Heat mover refrigerators

Heat Mover: Refrigerators

  • Does work so that heat can move from inside refrigerators to outside

  • Needs coolant: evaporates at a low temperature

  • Liquid coolant->gas (cool)->pumped to coils in fridge and TE goes from warm to cold->warm gas compressed doing work-> becomes warmer then outside air and heat flows to outside air, process starts all over again.


Air conditioners and heat pumps

Air Conditioners and Heat Pumps

  • Air conditioners: Work like refrigerators, just does the opposite

  • Heat pump: can cool and warm air


Human coolant

Human Coolant

  • As sweat evaporates absorbs TE, taking heat away from your body


Match it words

Match it Words!

  • Temperature

  • Insulator

  • Conductor

  • Convection Currents

  • Conduction

  • Radiation

  • Heat

  • Specific Heat

  • Combustion

  • Thermal Energy

  • Kinetic Energy


Word bank

Word Bank


Flash card

Flash Card

  • On the Front:

  • Temperature

  • On the back:

  • Measure of KE of atoms in an object


Flash card1

Flash Card

  • On the front:

  • Thermal energy

  • On the back:

  • The total of PE + KE of atoms in an object


Flash card2

Flash Card

  • On the front:

  • Heat

  • On the back:

  • Thermal energy that flows from high temp. to low temp.


Flash card3

Flash Card

  • On the front:

  • Specific heat

  • On the back:

  • Amount of heat that is needed to ^ the temp of 1kg of something 1*C


Flash card4

Flash Card

  • On the Front:

  • Conduction

  • On the back:

  • Transfer of thermal energy by collisions of particles


Flash card5

Flash Card

  • On the Front:

  • Convection

  • ON the back:

  • The movement and transfer of TE of warm and cold fluids


Flash card6

Flash Card:

  • On the front

  • Radiation

  • On the Back:

  • Is the transfer of energy by electromagnetic waves


Word bank1

Word Bank

  • Heat engine

  • Radiation

  • Combustion

  • Insulators

  • Specific Heat

  • Conductor

  • Kinetic Energy

  • Vacuum


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