1. Conduction, Convection, and Radiation
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2. Essential Questions for your Cornell Notes (Top):
What methods can be used to demonstrate thermal energy transfers?
What are conduction, convection, and radiation, including examples?

3. Conduction, Convection and Radiation
Thermal Energy
Energy that is generated by a source
Total kinetic energy of particles
Measured by temperature (the average kinetic energy of particles)
Can be transferred heat
Kinetic energy of an object is the energy that it possesses due to its motion.
Chemical energy is energy stored in the bonds of chemical compounds (atoms and molecules). It is released in a chemical reaction, often producing heat as a by-product (exothermic reaction). Batteries, biomass, petroleum, natural gas, and coal are examples of stored chemical energy.
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4. Conduction, Convection and Radiation
3 Ways Thermal Energy can be Transferred by heat
Conduction
Convection
Radiation
Have a pan of water boiling in the room. Discuss the three types of energy transfer using this as an example.
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5. Foldable – MS Credit only
Take a piece of colorful paper and hole punch it.
On the opposite side of the holes, make your paper look like the example.
Cut the 2 lines (1 between conduction and convection and the other convection and radiation)
You should have 3 flip pages for additional notes.
Use this for your examples.
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6. Conduction, Convection and Radiation
Travels through space and other types of matter
The initial transfer of thermal energy.
Energy transmitted in waves or a stream of particles called Photons physics/photons/v/photon-energy
(only watch until 2:40....honors only
for this 3rd bullet point).
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7. Conduction, Convection and Radiation
Examples of Radiation - (waves or particles of energy called photons)
Laying out in the sun at a beach
Holding your hand over a burning match without touching it
Feeling the warmth of a bonfire
Holding your hands over a light bulb
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8. Conduction, Convection and Radiation
The movement of heat, once heated through radiation
Conduction can also refer to the movement of electricity through matter
Solids are good conductors, particularly metals…both for heat transfer and for electricity.
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9. Conduction, Convection and Radiation
Examples of Conduction – (direct contact)
Touching a metal spoon in a cup of hot liquid
Putting a heating pad on your back
Feeling the heat from a hot poker that was in a fire place
Placing a hand on top of a basket of hot rolls
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10. Conduction, Convection and Radiation
The transfer of thermal energy though a fluid (gas or liquid) that has already been heated through radiation
Due to differences in density
Hot fluid (less dense) rises while cold fluid (more dense) sinks.
Red (hot) rises
Stop and discuss the difference in densities between hot and cold fluids.
Blue (cold) sinks
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11. Conduction, Convection and Radiation
Examples of Convection – (hot rising/cold sinking)
Macaroni rising and falling in a pot of boiling water
Lava lamp rising and sinking
Hot magma rising in the mantle, cold sinking
Hot air rising in the atmosphere, cold sinking (convection cell causing wind)
Hot water rising in the oceans, cold sinking
Red (hot) rises
Blue (cold) sinks
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12. Conduction, Convection and Radiation
Stop and Reflect
With a partner come up with two other examples for conduction, convection, and radiation.
Share!
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13. In your Cornell Note Summary (bottom of Page 1):
1. Describe the heat transfer in this picture: 2. Describe the heat transfer in the wind, the Earth’s oceans, and in the Earth’s mantle. 3. Describe how sunburns are related to heat transfer.
Have students complete this template either with a partner or individually. Let’s see if they can apply their learning.
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14. On your Cornell Note Summary (bottom of page 2)
Can you…
Demonstrate a way to explain thermal energy transfers?
Define conductions, convection and radiation and give examples?
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