Match each situation with the correct method of heat transfer:
a. radiation
b. conduction
c. convection
__A_ 1) The inside of a car gets very hot when that car is parked on a parking lot in the middle of August.
__A_ 2) During the winter when the furnace is running in a two-story house, the temperature on the second floor is warmer than the temperature on the first floor.
__B_ 3) The handle of a cast-iron skillet cooking fried potatoes on the stove gets too hot to pick up without a pot holder.
__A_4) French fries at the restaurant are kept warm by the warming lamps positioned above the cooked french fries.
_B__ 5) The man used a lighter to heat the door key of his car so that it would go into the frozen car door lock.
_C__ 6) Currents in the earth’s asthenosphere are created when hot magma rises.
Are my answers correct?
Radiation is the heating throught electromagnetic waves
Conduction is the heating through touch
convection is the heating through hot liquid or gas
Yes, your answers are correct! Here is the explanation for each situation:
1) The inside of a car gets very hot when that car is parked on a parking lot in the middle of August.
- This is an example of radiation. The car absorbs radiation from the sun, and then re-emits it as heat inside the car, causing it to get hot.
2) During the winter when the furnace is running in a two-story house, the temperature on the second floor is warmer than the temperature on the first floor.
- This is an example of convection. The warm air produced by the furnace rises and creates convection currents, transferring heat from the first floor to the second floor.
3) The handle of a cast-iron skillet cooking fried potatoes on the stove gets too hot to pick up without a pot holder.
- This is an example of conduction. The heat from the skillet is directly transferred to its handle, making it hot.
4) French fries at the restaurant are kept warm by the warming lamps positioned above the cooked french fries.
- This is an example of radiation. The warming lamps emit heat and the French fries absorb this heat to stay warm.
5) The man used a lighter to heat the door key of his car so that it would go into the frozen car door lock.
- This is an example of conduction. The heat from the lighter is directly transferred to the key, melting the ice in the car door lock and allowing access.
6) Currents in the earth’s asthenosphere are created when hot magma rises.
- This is an example of convection. The hot magma rises due to its lower density, creating convection currents in the asthenosphere of the Earth.