Examples of Heat Transfer
Accelerated Physical Science
Mr. Mahlum
For each of the following everyday examples, describe the transfer of heat within the system. Identify the method of heat transfer (conduction, convection, raidation), and which materials gain and lose heat. If appropriate note whether Latent Heat of Fusion (Lf) or Latent Heat of Vaporization (Lv)is involved.
Ice cubes are added to a glass of Coca Cola.
Chilled cream is added to a mug of hot coffee.
An iron poker is left sitting in the coals of a fire and the handle begins to heat up.
A toaster cooks pieces of bread.
An old apartment building is warmed using hot water supplied to a several radiators.
An electric hair dryer is used to blow dry hair.
A sunbather catches rays on the beach.
Food is stored in a refrigerator.
An internal combustion engine is cooled using a radiator and antifreeze.
Smoke from a fireplace rises up the chimney.
Water boils in a teapot.
A student wearing a black Metallica T-Shirt feels warm on a summer day.
A heat sink is used to cool a Pentium I microchip and prevent it from overheating.
A fan is used to cool a Pentium III microchip and prevent it from overheating.
Desert nomads wear white robes to keep cool under the hot sun.
Lemonade is kept cool inside of a thermos.
An engine from a 1973 Volkswagen Super Beetle is cooled by blowing air over the engine.
Warm water rises to the top of a lake during the spring and remains at the surface throughout summer.
A thermostat warms up when the furnace in a house is activated.
Hot coffee is kept warm inside of a stryrofoam cup.
A student goes camping and uses a sleeping bag to stay warm at night.
An ice cream cone melts on a warm summer day.
A student heats up his swimming pool by painting the filter hoses black.
A student holds injures herself while driving the lane during a basketball game and spends the second half holding an ice pack on her knee.
A student wearing shorts burns his leg on the muffler of a motorcycle.
A student rides in an air-conditioned car.
A swimmin pool is heated by placing a thermal blanket (plastic bubble-type) over the water surface.
A student goes outside on a winter day and wears a winter jacket to keep warm.