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TOPIC: Heat AIM: How is heat transferred?
Movement of heat from warm cool objectWhat is heat transfer? Movement of heat from warm cool object Example = hot pan Heat moves from pan handle
3 types of heat transfer
Heat transfer in SOLIDS1. Conduction Heat transfer in SOLIDS
Heat transfer by the direct contact of molecules
Fast moving molecules (have more heat) Bump into slower ones Start to move faster collide with other slower molecules…
Why can the girl on the right toast marshmallows without getting burned?
Conductor Material that allows heat to move through it easily Metals (copper & silver are the best)
Example: copper pipes (Heat exchangers in hot water tanks, under floor heating systems, and car radiators)
TOPIC: Heat AIM: How is heat transferred? Cont’d…
Do not conduct heat easily Insulators Do not conduct heat easily Wood, paper, wax, air, house insulation, plastic
Transfer of heat in liquids & gases Liquid heated molecules move faster & farther apart less dense rise carrying heat with it 2. Convection
Example: warm air rises, cool air sinks
Up & down movement of molecules due to changes in densityConvection currents Up & down movement of molecules due to changes in density
Convection Currents Inside the Earth
3. Radiation Heat transfer through space Can travel when no matter is present (vacuum) Heat energy from sun, stars, fire
Radiation from the Sun travels through empty space.
Radiation from the fire heats the marshmallow.
SOLIDS LIQUIDS & GASES THROUGH SPACE
REVIEW C conduction B convection A radiation
REVIEW A convection B radiation conduction D C convection
http://player. discoveryeducation. com/index. cfm
Unit 6 Heat.
The Transfer of Heat.
6.2 Thermal Energy & Temperature
3 Types of Heat Transfer.
Introduction: Transfer of Heat
Understanding Heat Transfer: Conduction, Convection and Radiation
Chapter 10 (briefly!).
How does Heat Energy transfer from one substance to another?
Today’s Topic: Heat Transfer. What is heat, anyway? Heat is the flow of energy from a hotter object to a colder object.
Heat Transfer Warm Up: Make a list in your science notebook of things you learn from the video link— Heat Transfer.
By Marvin Lowe. Teacher's Notes Subject: Physics (Heat Energy) Topic: Conservation of energy- Heat transfer Grades: 8 Prior Knowledge: 1) phases of matter-
Question of the Day Label the heat movement as conduction, convection or radiation. 1.Lava Lamp2.Fire3.Spoon in soup.
Conduction, Convection, and Radiation EQ: What are the three ways that heat energy can be transferred? *Answer this as we proceed through the presentation.
Methods of Heat Transfer Definitions Examples Comparison to heat transfer on Earth that effects weather.
Using Thermal Energy Pgs Thermal Energy on the Move 6-2 Using heat to Stay Warm.
Chapter 6: Thermal Energy
The Transfer of Heat Energy.
Energy Transfer Chapter 10.2.
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