Temperature and Heat
electrons bump into atoms and other electrons
Heat transfer occurs when
the temperature difference between an object and its surroundings
Newtons law of cooling says that the rate of cooling depends on
a good emitter of radiation
a good absorber of radiation is
a poor absorber of radiation
a good reflection of radiation is
metals, in general, are good heat conductors
a piece of metal will feel colder than a piece of wood at the same temperature, why?
the bar keeps the paper relatively cool
a piece of paper wrapped around a thick metal bar will not ignite when touched with a lit match because
warm air over the shore rises and and cooler air from the ocean takes its place
at night, a sea breeze results when
water expands when it freezes
during a very cold winter, water pipes sometimes burst, this reason for this is
fluids
energy transfer by convection is primarily restricted to
wood's poor conductivity
firewalkers who walk barefoot on red hot wooden coals depends on
terrestrial radiation
global warming by greenhouse effect mostly results from the fact that an atmosphere with excess carbon dioxide is less transparent to
radiation
heat travels from the sun to the earth by
lower than its surroundings
if a poor absorber of radiation were a good emitter, its temperature could remain
less likely to freeze
if the specific heat capacity of water were higher than it is, lakes would be
cools
if volume of air is warmed, it expands, if a volume of air expands, it
high frequency light in and preventing low frequency radiation from escaping
in a florist's greenhouse, glass acts as a one way, letting
radiant energy
infrared radiation is a form of
total amount of energy contained in an object
internal energy is the
absorber
plastic foam is a good heat
long wave length radiation is absorbed by the atmosphere
radiation from the sun often gets trapped in Earth's atmosphere, the reason for that is
land is hotter than water, cool air above the ocean flows downward, a high pressure area is created high above the water, a low pressure area is created just over the shore
sea breezes are usually from the sea towards the land during the day because
a high specific heat capacity
some molecules are able to absorb large amounts of energy in the form of internal vibrations and rotations, materials are composed of such molecules would have
average molecular kinetic energy in a substance
temperature is related mostly to the
absorbtion of terrestrial radiation
the lower atmosphere is directly warmed by
water has the highest specific heat capacity
the reason an ocean's temperature doesn't vary much from one season to another is that
they reflect a lot of energy
the reason light colored clothes help keep you cool in warm weather is because
air convects heat well, hot air rises, air is a poor heat conductor, hot air convection currents travel upwards
the reason your finger doesn't get burned when held next to a candle flame
larger
when an iron ring is heated, the hole becomes
the boiling water
which cools faster, a pot of boiling water left at room temperature or a pot of luke warm water at the same size left at room temperature
water
which has a higher specific heat capacity, water or sand?
the water
which is denser, ice at zero degrees C or water at four degrees C
