Flashcards: Heat & Energy Exchanges

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Unit of heat energy

Terrestrial radiation is of this type:

Most (90%) of solar radiation is....

Average kinetic energy of the atoms or molecules of a substance.

Temperature at which all molecular motion stops

Heat transfer by collision of molecules

Only method of heat transfer that operates through space

All warm objects emit this

Transfer by density differences

Method of hear transfer through most SOLIDS

Method of heat transfer operating in most FLUIDS (liquids & gases)

A poor conductor of heat is a good....

A surface will be a good absorber if it is......

A surface is a good reflector if it is....

A good absorber is also a good

Bending of EM waves

The amount of heat energy needed to change the temperature of 1g of a substance by one degree Celcius

Amount of heat energy needed to change the temperature of 1g of liquid water by 1 degree Celcius.

Melting point of H2O (Celcius)

Freezing point of H2O (Celcius)

Phase change from vapor to liquid

Phase change from liquid to vapor

Solidification

Number of Joules that need to be added to 1g of ice to make it melt.

Number of Joules released when 1g of water freezes.

Number of Joules needed to evaporate 1g of liquid water.

Number of Joules released when 1g of water vapor condenses.

Processes that release heat energy (Joules) into the environment:

Processes that require that heat energy (Joules) be added:

In a closed system the energy lost by the source is...

A substance will heat and cool quickly if it has a...

A substance will heat and cool slowly if it has a....

Which substance has the largest specific heat of any common material?

Why the earth cools off at night:

Ice warms faster than liquid water because....

This phase of H2O contains the most stored (potential) energy.

The amount of energy radiated by an object depends on its...

If the earth receives the same amount of energy it re-radiates then it is in....

As compared to most solar radiation, the wavelengths of terrestrial radiation are

Energy travels from a star to the earth by

The rate of heat transfer between source and sink depends on the.....

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Joule

Infra red

Visible light

Temperature

Absolute zero

Conduction

Radiation

Infra red

Convection

Conduction

Convection

Insulator

Dark & rough

Light & smooth

Radiator

Refraction

Specific heat (of the substance)

4.18 Joules

0 degrees Celcius

0 degrees Celcius

Condensation

Evaporation or Vaporization

Freezing

334 Joules

334 Joules

2260 Joules

2260 Joules

Freezing and condensation

Melting & evaporation (vaporization)

Gained by the sink

Small specific heat.

Large specific heat

Water

Radiational cooling

It has a smaller specific heat.

Vapor (gas)

Temperature

Radiative balance

Longer

Radiation

Difference in temperature between them. Begger difference = Faster rate.

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