USING ENERGY FROM THE SUN CONVERTING ENERGY FROM ONE FORM TO ANOTHER.
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Transcript of USING ENERGY FROM THE SUN CONVERTING ENERGY FROM ONE FORM TO ANOTHER.
OBJECTIVES
BY THE END OF THIS LESSON YOU WILL BE ABLE TO SAY “I CAN…”
• BUILD A DEVICE THAT CONVERTS LIGHT INTO HEAT.
• EXPLAIN THE PRINCIPLES OF HEAT TRANSFER INCLUDING CONVECTION, CONDUCTION, AND RADIATION.
• EXPLAIN WHY CERTAIN MATERIALS INCREASE OR DECREASE HEAT.
• EXPLAIN THE BENEFITS AND DISADVANTAGES TO SOLAR COOKING.
FOOD FOR THOUGHT….
• HOW CAN YOU USE THE SUN TO COOK FOOD?
• WHEN WOULD YOU EVER NEED TO USE THE SUN TO COOK FOOD?
• WHAT ARE SOME WAYS YOU CAN THINK OF TO USE THE SUN TO COOK FOOD?
TIMELINEMATERIALS ALREADY AVAILABLE:
• OVEN THERMOMETERS
• REYNOLDS OVEN COOKING BAGS
• PLASTIC WRAP
• ALUMINUM FOIL
• BLACK CONSTRUCTION PAPER
• MASKING TAPE
• SUN SHADE
Day 1 Day 2 Outside of class
Day 3
Introduction to solar cookers
Bring materials needed to class
Finish building solar cooker.
Test solar cookers.
Student research and draft design of cooker
Build solar cookers
Refine it using principles you’ve learned.
Measure temperature increase every 10 minutes.
Develop materials list
Make sure your space is clean and you solar cooker is in a safe place.
Complete and turn in Student Guides.
Convection Conduction Radiation
Currents are created when there are differences in temperature and density within a fluid or gas.
The transfer of heat by direct contact between two materials with different temperatures.
The movement of heat waves.
BRING ME YOUR LIST AND DESIGN TO RECEIVE ANY OF THE FOLLOWING:
• REYNOLDS OVEN COOKING BAGS
• PLASTIC WRAP
• ALUMINUM FOIL
• BLACK CONSTRUCTION PAPER
• MASKING TAPE
• SUN SHADES
YOUR MISSION: S-MORES
YOUR GOAL IS TO MELT THE MARSHMALLOW AND THE CHOCOLATE (REMEMBER, THEY WILL COOK AT DIFFERENT SPEEDS)
PLACE THERMOMETER INSIDE YOUR SOLAR COOKER.
CHECK AND WRITE THE TEMPERATURE EVERY 10 MINUTES.
MAKE OBSERVATIONS AND ADJUST YOUR SOLAR COOKER AS NEEDED (JUST REMEMBER TO WRITE DOWN MODIFICATIONS).
REVIEW OBJECTIVESCAN YOU BUILD A DEVICE THAT CONVERTS LIGHT INTO HEAT?
CAN YOU EXPLAIN THE DYNAMICS OF HEAT TRANSFER INCLUDING CONVECTION, CONDUCTION, AND RADIATION?
CAN YOU EXPLAIN WHY CERTAIN MATERIALS INCREASE OR DECREASE HEAT?
CAN YOU RELATE THE CHARACTERISTICS OF SOLAR COOKERS TO OTHER SYSTEMS (COOLING AND HEATING OF HOMES)?
CAN YOU EXPLAIN THE BENEFITS AND DISADVANTAGES OF SOLAR COOKING.?