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Thermodynamics
PHYSICS: THERMODYNAMICS
12
Physics
12th Grade
03/07/2011

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Cards

Term
The oveall purpose of the refrigerant (freon) in an air conditioner is to:
Definition
Transfer heat
Term
The compressor in an air conditioner:
Definition
Increases the temp of the refrigerant
Term
The energy content of a piece of food is determined by:
Definition
Burning the food
Term
Which has a higher specific heat capacity, water or sand?
Definition
Water
Term
A container of water has the smallest volume at what degree?
Definition
4 degrees Celsius
Term
The reason fish live from year to year in ponds that freeze over in the winter is that:
Definition
Water has a low specific heat capacity
Term
The fact that the desert sand is very hot in the day and very cold at night is evidence of what of the sand?
Definition
That it has a very low specific heat capacity.
Term
Water at 4ÂșC expands most when what?
Definition
temp is lowered
Term
A piece of metal will feel colder than a piece of wood at the same temp because
Definition
metals, in general, are good heat conductors
Term
Sea breezes are usually from the sea toward the land during the day because land is hotter than water,
Definition
a high-pressure area is created high above the land, cool air high over the ocean flows downward and a low-press. area is created just over the shore
Term
Radiation from the sun gets trapped in the atmosphere because:
Definition
long-wavelength radiation is absorbed by the atmosphere
Term
If a poor absorber of radiation were a good emitter, its temp would be:
Definition
lower than that of its surroundings
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