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A material that reduces the flow of heat by conduction, convection, and radiation is a(n) ___________.
All the following are good conductors of heat EXCEPT ________.
silver, copper, aluminum, and air
Of the following, insulation that is most resistant to heat flow is rated ________.
R-40, R-20, R-10, and R-1
Through which of the following will convection most likely occur?
solids and liquids, solids and gases, solids, and liquids and gases
liquids and gases
A device that heats your home by transferring thermal energy from a region of low temperature to a region at a higher temperature is a __________.
The inside surfaces of the glass inside vacuum bottles are coated with aluminum to prevent heat loss by ___________.
Two equal masses of two different kinds of matter __________.
probably have different thermal energy
Compare and contrast heat and temperature.
Temperature is the measure of kinetic energy. Heat is kinetic and potential energy.
How does thermal energy relate to heat?
heat is thermal energy that flows from higher temperature to lower temperature.
Water has very high specific heat. Why does this make it a very good substance for use in cooling systems of automobiles?
takes a long time to get hot.
A well-insulated house should have insulation with an R-value of at least R-19 in the walls and an R-value or R-30 to R-44 in the ceilings. Why is a higher R-value needed in the ceilings?
cause heat rises.
Materials with a high specific heat can absorb heat without a large ___________ in temperature.
A house with large windows on its south side and few windows on its other sides probably uses a(n) ____________ solar heating system.
Fuel burned un a stove or fireplace transfers thermal energy to the surrounding air by __________, convection, and radiation.
Before solar energy can be used as a source of heat, it must be changed to _______ ________.
______- amount of heat needed to raise the temperature of 1 kg of a material b 1 degree C or K.
Changes in thermal energy can be calculated as change in thermal energy equals _______ times change in temperature times specific heat.
When heat flows into an object and its temperature rises, the change in temperature is ____________.
When heat flood out of an object and its temperature decreases, the change in temperature is _______.
Convection currents create __________ and ____________ over different regions of Earth.
rain forests and deserts
Most living things control the flow of heat by using special features such as fur, ______, or scales.
A __________ layer in a thermos is a good insulator because it contains almost no matter to allow conduction or convection to occur.
________ system - fuel heats air, which is blown through ducts and vents; cool air is returned to the furnace to be reheated.
________ heating system - electrically heated coils in ceilings or floors heat sir by conduction.
Active heating systems use ____________ to absurd radiant energy, which is circulated through the building.
internal combustion engines convert only about _____% of the fuels chemical energy to mechanical energy.
________- device that removes thermal energy from one location and transfers it to another location at a different temperature.
A __________ contains a coolant that absorbs heat from the inside of the refrigerator and releases it one the outside as heat.
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