3 Kinds of Heat Transfer.

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Presentation transcript:

3 Kinds of Heat Transfer

Three Kinds of Heat Transfer 1. Conduction- transfer of heat through a material by direct contact. (particle to particle) Ex. Melting the ice by warming it with your hands Ex. You touching a hot stove

To stop conduction, use the worst conductor which is air or a vacuum. Heat transfers through a solid easily and gases the slowest. Ex. Puffy clothing Ex. House insulation

Insulation Insulations are materials that stop heat transfer. A good insulator stops all 3 types of heat transfer.

Winter animal adaptions How do animals stay warm? How animals stay warm

Convection Convection- transfer of heat in a fluid (gas or liquid) due to a difference in densities. Hot fluids are lighter and rise. Cold fluids are more dense and sink. http://www.absorblearning.com/media/attachment.action?quick=t1&att=2080 Click on animation twice

To stop convection, put a lid on it!

Heat = Infrared Radiation Transfer of thermal energy by waves Heat = Infrared Radiation

Ex.Radiation

Heat Transfer Program http://www.wisc-online.com/Objects/heattransfer/

To stop radiation, reflect it!

Fire Safety Hold the cork… Not the metal silly =) No paper!!!! (Clear your desk please!) Tie your hair back… tuck in your hoodie strings too Hike up your sleeves If we need it… Fire Blanket Sinks (there are 15) Fire Extinguisher Hold the cork… Not the metal silly =)

Densities of Matter (Except water)

The Polarity of Water

Slide show on Thermal Energy

Refrigeration

Sweating Why you sweat

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