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3 heat transfers
Question | Answer |
---|---|
what is the transfer of heat by the flow? | convection. |
what is the direct transfer of energy when molecules bump into each other? | conduction |
direct contact between two objects like warm land or water directly heating the air mass above it | conduction |
what is an example of conduction? | walking barefoot on hot pavement. |
what is the transfer of energy by electromagnetic waves? | radiation |
how does energy from the sun reach earths surface? | radiation |
what is an example of radiation? | feeling heat from a fire place. |
are radiation and heat two different things? | yes because heat is a transfer from objects with high temps to objects with lower temps |
what is absorbed that heats up our atmosphere? | radiation |
what occurs in liquids and gases? | convection |
what places a role in heating the atmosphere after radiation and conduction? | convection |
what is a convection current? | a convection current is when cold air becomes more dense, it pushes up warmer air creating a convection current. |
what drives weather patterns? | the cycling of warm and cold currents. |
a medal spoon gets hot in a pot of boiling water is an example of .......? | conduction |
an ice cube melts when held an a hand | conduction |
water in a heated pot begins to boil | convection |
cool air sinks to the ground on a warm night | convection |
air is warmer near the ceiling than the floor | convection |
transfer of heat by electromagnetic waves | radiation |
cold hands are warmed by a space heater | radiation |
bread turns brown in a toaster | radiation |
marshmallows turn brown when held over hot coals | radiation |
the sun melts the ice on a lawn | radiation |