Heat Transfer
You can not transfer cold or give someone cold! Heat Transfer Is the transfer of thermal energy from a hotter object to a cooler one until both objects are the same temperature. You can not transfer cold or give someone cold!
3 ways that heat is transferred within the atmosphere Radiation Conduction Convection
Be prepared to share definitions! Heat Transfer cards Part I: Read each example of heat transfer, looking for patterns. Create three different groups of the three different ways to transfer heat. Make a group definition for each type of heat transfer. Be prepared to share definitions!
The first method of heat transfer How does heat energy get from the Sun to the Earth? RADIATION ?
Radiation The direct transfer of energy by infrared electromagnetic Waves. Sun, fire, light bulbs
Pair Share Partner A: What is radiation and where does it come from. Partner B: What are three different things that create electromagnetic radiation?
Conduction The direct transfer of heat from one substance to another substance that is touching. Objects have to touch!!! Ironing Clothes Stepping on hot sand. That’s Hot
Conduction When you heat a metal strip at one end, the heat travels to the other end. As you heat the metal, the particles vibrate, these vibrations make the adjacent particles vibrate, and so on and so on, the vibrations are passed along the metal and so is the heat. We call this?
Example of Conduction
Pair Share: Partner A: Using the picture on the right explain the conduction process Pair Share: Partner B: Explain how the picture on the left is conducting heat.
The transfer of heat by movement of a fluid (liquids and gases). Convection The transfer of heat by movement of a fluid (liquids and gases). Cooking peas in water Blow Drying your Hair. Dryer OVEN
Conduction, Convection and Radiation
Heat Transfer cards Part II: recheck your heat transfer piles then write the actual definition and three examples for each.
A space heater heating the air in the room. Convection
The sun heating your skin on a warm summer day. Radiation
A metal spoon gets hot when you stir your hot chocolate. Conduction
Warming yourself by the fireplace. Radiation
How a hot-air balloon works Convection
Oven that has a fan in it to circulate the heat Convection
How it’s hotter upstairs than it is down stairs when you have the heater on. Convection
Cooking marshmallows on a campfire Radiation and Convection
How you have to be careful touching the end of a metal pot. Conduction
Cooking spaghetti in boiling water. Convection
Warmth you can feel when you put your hand near a turned on light bulb. Radiation
Warming yourself with a heating blanket Conduction
Type of heat transfer that heats a greenhouse. Radiation
Drying your clothes in a dryer. Convection
A hot pot on the stove. Conduction
When your hands get warm from holding a hot mug. Conduction
Heating the Troposphere Radiation, conduction and convection work together to heat the troposphere. Radiation- heats the Earth Conduction- Air near earth’s surface is warmed Convection- the warm air molecules rise and transfer heat to the cooler air molecules. Eventually these molecules cool and sink back down to earth. This creates Convection Currents.
Radiation, Convection and Conduction work together to heat the troposphere. review of all 3 types Radiation Convection Current Conduction
Review Heat transfer from a hotter object to a cooler object until both objects are the same temperature. 3 types of heat transfer review3 types of heat transfer review, review 2 Music Review Radiation – electromagnetic waves Conduction – touching Convection- through a fluid (liquid or gas) All 3 work together to heat the troposphere but Convection causes most of the heating.