Slide 1

How does energy transfer through our atmosphere? Slide 2 Solar Energy The sun is the source of all energy in Earths atmosphere The energy is transferred in three ways: Radiation Conduction Convection Slide 3 Radiation Radiation is the transfer of energy through electromagnetic waves Anything with a temp above 0K radiates energy The earth absorbs 50% of the suns radiation Radiation does not directly heat the atmosphere Slide 4 Conduction Conduction occurs between two objects that are in contact with each other Example pot on stove The lowest layers of the atmosphere are heated by conduction Slide 5 Convection Convection is the flow of energy through a heated substance The heated substance rises as it loses density The substance cools at the top of a cycle, compresses to increase density, and sinks The cycle repeats as long as there is heat transfer to the substance Slide 6 Slide 7 Temperature vs. Heat Temperature is the measure of how quickly molecules move Heat is the transfer of energy between two substances in contact Heat flows from higher temperature to lower temperature Slide 8 Slide 9 Dew Point The temperature air must be cooled at constant pressure to reach saturation is the Dew Point Saturated air cannot hold any more water vapor When air reaches its dew point, Condensation occurs, causing rain or other precipitation