CH. 15-2
Energy Transfer in
the Atmosphere
Energy from the Sun
 The Sun provides most of the
energy on Earth.
 Three things happen when
Earth receives the energy:
...
Energy from the Sun
 Some energy is absorbed
by the atmosphere
 The rest is absorbed by
land and water on Earth’s
surfac...
Energy from the Sun
 About 35% is reflected
back into space.
 6% by the atmosphere
 4% by Earth’s surface
 25% by clou...
Energy from the Sun
 The other 65% is absorbed.
 15% by the atmosphere
 50% directly or indirectly
by Earth’s surface
Heat
 Heat energy flows from
warm to cold.
 Heat energy is absorbed by
roads, rocks, water, & soil.
 Heat is transferre...
Heat
 Radiation
 Conduction
 Convection
Radiation
 Radiation – Energy from
the sun transferred in the
form of waves or rays.
 You feel the radiation when
the Su...
Conduction
 Conduction – the transfer
of energy that occurs when
molecules bump into one
another.
 In other words, one o...
Conduction
 Energy will travel from the
warmer object to the cooler
object.
 Earth’s surface conducts
energy to the atmo...
Convection
 Convection – is the
transfer of heat by the flow
of material.
 Convection circulates heat
throughout the
atm...
Convection
 As air is warmed it
becomes less dense &
rises.
 Cooler air moves in to
replace the warm air.
Water Cycle
 Hydrosphere – all the water
on Earth’s surface.
 Evaporation – when water
changes from a liquid to gas.
 C...
Water Cycle
 Water evaporates from
oceans, lakes & streams AND
transpiration from plants
 The water vapor (gas)
condensa...
Energy transfer 15.2
Energy transfer 15.2
Energy transfer 15.2
Energy transfer 15.2
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Energy transfer 15.2

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Energy transfer 15.2

  1. 1. CH. 15-2 Energy Transfer in the Atmosphere
  2. 2. Energy from the Sun  The Sun provides most of the energy on Earth.  Three things happen when Earth receives the energy:  Some is reflected back into space by clouds, atmospheric particles, & Earth’s surface.
  3. 3. Energy from the Sun  Some energy is absorbed by the atmosphere  The rest is absorbed by land and water on Earth’s surface.
  4. 4. Energy from the Sun  About 35% is reflected back into space.  6% by the atmosphere  4% by Earth’s surface  25% by clouds
  5. 5. Energy from the Sun  The other 65% is absorbed.  15% by the atmosphere  50% directly or indirectly by Earth’s surface
  6. 6. Heat  Heat energy flows from warm to cold.  Heat energy is absorbed by roads, rocks, water, & soil.  Heat is transferred through the atmosphere in 3 ways:
  7. 7. Heat  Radiation  Conduction  Convection
  8. 8. Radiation  Radiation – Energy from the sun transferred in the form of waves or rays.  You feel the radiation when the Sun warms your face or skin.
  9. 9. Conduction  Conduction – the transfer of energy that occurs when molecules bump into one another.  In other words, one object comes into contact with another….
  10. 10. Conduction  Energy will travel from the warmer object to the cooler object.  Earth’s surface conducts energy to the atmosphere by air moving over warm land.
  11. 11. Convection  Convection – is the transfer of heat by the flow of material.  Convection circulates heat throughout the atmosphere. How?
  12. 12. Convection  As air is warmed it becomes less dense & rises.  Cooler air moves in to replace the warm air.
  13. 13. Water Cycle  Hydrosphere – all the water on Earth’s surface.  Evaporation – when water changes from a liquid to gas.  Condensation – when water changes from a gas to a liquid.
  14. 14. Water Cycle  Water evaporates from oceans, lakes & streams AND transpiration from plants  The water vapor (gas) condensates forming clouds.  The water in clouds falls to Earth as precipitation

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