ATMOSPHERIC HEATINGHeat transfer

RADIATION: SOLAR ENERGY TRANSFERS BY WAVES

Radiation: is energy that is transferred as electromagnetic waves, such as visible light and infrared waves. (Energy transferred from the sun in waves)

The Sun heats up the Earth through radiation

Examples include visible light, radio waves, sunlight ,and radiant heat.

Can be in the form of particles or waves.

EXAMPLES OF RADIATION (HEAT)

RADIATION Direct transfer of energy without heating the

space in between

Fireplace Microwave Radiator

Energy from the Sun to the Earth

CONVECTION

The transfer of heat by a liquid or gas (such as air).

Convection causes most of the heating of the troposphere (atmosphere)

EXAMPLES OF CONVECTION

CONVECTION CURRENT

Hot, less dense air rises and cold more dense air sinks.

Air near the ground is heated by the sun (radiation)

The molecules gain energy and move faster

As they bump into each other they move further apart and become less dense

The less dense air then rises due to the warm temperature

Cooler, denser air sinksThis causes a constant movement of heat through the troposphere.

CONVECTION

Transfer of a heat through a fluid  (gas or liquid)

Oven Boiling Water

Air rising (hot) and

falling (cold

CONDUCTION: SOLAR ENERGY TRANSFERS BY CONTACT

The direct transfer of heat from one substance to another substance that is touching it.

Conduction works better in certain substances, like metals

EXAMPLES OF CONDUCTION

CONDUCTION

Transfer of heat from one substance to another that is touching

Hair Straightener Heating Pad Electric Blanket

Energy from molecules that touch Earth’s surface

ALL 3 TYPES WORK TOGETHER: