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Heat Transfer Chapter 2, Section 2 p. 49-51
How Heat is Transferred Heat: the energy transferred from a hotter object to a cooler one.
How Heat is Transferred Heat is transferred in 3 ways: radiation, conduction, and convection.
Radiation Radiation: the direct transfer of energy by electromagnetic waves.
Radiation Examples: sun’s rays, campfire.
Conduction Conduction: the direct transfer of heat from one substance to another substance that it is touching.
Conduction Solids conduct heat better than liquids or gases (molecules are closer together).
Conduction Examples: walking on hot sand, touching a hot pot.
Convection Convection: the transfer of heat by the movement of a fluid.
Convection Examples: furnace, boiling water.
Heat Transfer in the Troposphere Radiation, conduction, and convection work together to heat the troposphere.
Heat Transfer in the Troposphere 1. Earth’s surface absorbs solar energy and is heated by radiation.
Heat Transfer in the Troposphere 2. Earth’s surface reradiates heat and warms the lower troposphere by conduction.
Heat Transfer in the Troposphere 3. The heated air molecules move faster making the warm air rise and the cold air sink. This creates convection currents which move heat throughout the troposphere.
. Earth’s surface is heated by radiation. Earth’s surface reradiates heat. Lower atmosphere is heated by conduction. Warm gases rise, cool gases sink = convection. HEATING THE TROPOSPHERE
The Greenhouse Effect When Earth’s surface is heated, it radiates some of the energy back into the atmosphere.
The Greenhouse Effect Greenhouse effect: the process by which gases hold heat in the air.
Methods of Heat Transfer Definitions Examples Comparison to heat transfer on Earth that effects weather.
Chapter 2 Weather Factors
The Transfer of Heat Energy.
Remember! Heat is transferred in three different ways:
ENERGY FROM THE SUN Chapter 14.3 Pages Energy in the Atmosphere The sun is the source of ALL energy in our atmosphere. Three things that can.
Heat & Heat Transfer Heat: Heat is energy! Heat is the energy transferred (passed) from a hotter object to a cooler object. Heat Transfer: The transfer.
Chapter 2 Section 1 The sun provides nearly all of the energy which powers the atmosphere. That energy comes to us in the form of electromagnetic.
Heating the Atmosphere Radiation Conduction The Earth receives its energy from the sun through radiation The transfer of energy as electromagnetic waves.
The Atmosphere B3: Weather Factors Part 1 – Energy in the Atmosphere.
16-2 Heat Transfer. (pages 548–551) 1
CHAPTER 14 Energy in the Atmosphere Section 1, pages
Heat Transfer. Energy transfer from a HOTTER object to a COOLER one.
Heat Transfer. How is heat transferred? (3 Ways) Examples:
Key Idea #14 There is a relationship between the warming of the Earth’s atmosphere by the sun and convection within the atmosphere and oceans.
How many ways are there to transfer heat? How can thermal energy (heat) be transferred?
Radiation, Conduction, Convection. Heat Transfer Processes 1._____________ - Sun heats Earth’s surface in the form of rays or waves 2._____________.
1._____gases that surround the Earth and keep it warm and wet 2._____layer that meteors burn up in 3._____bottom layer of the atmosphere RAP.
Heat Transfer. Heat transfer Everything is made of molecules. When molecules gain energy they move faster and create more heat. (The faster the molecules.
Chapter 2 Weather Factors Section 2 Heat Transfer.
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