Heat Transfer
Thermal energy moves from warm areas to cold areas until the temperature is equal
a heater pumps heat into a cold room and then shuts off once the entire room has reached a certain temperature
a thermometer heats up when immersed in a hot liquid
conduction
an egg is fried in a pan
conduction
cooling down your hand with ice cubes
conduction
the handle of a pot on a stove gets too hot to pick up
conduction
touching a hot plate
conduction
your feet hurt from walking barefoot across a blacktop parking lot
conduction
Ice in a soft drink melts due to
conduction and convection
Macaroni noodles move in bowling water because of
convection
bubbles of gas rise up from the bottom of a pot of boiling water
convection
heating a hot air balloon
convection
rising and falling rice in boiling water
convection
the flames of a fire rise upward
convection
the furnace in a home heats up and circulates air
convection
the soup inside a pot is cooked throughout
convection
warm, moist air rises upward near the equator
convection
Heat is a from of ______________
energy
When two objects reach the same temperature
equilibrium
If a metal spoon is used to stir hot chocolate, the spoon's temperature would rise because the heat energy from the
hot chocolate would travel up the spoon through conduction
Heat always flows in the same direction; from _________ to ___________
hot to cold
All____________ has heat
matter
Convection
most of the energy the atmosphere moves this way
conduction
occurs by direct contact between solids, liquids, and gases
As heat leaves the glowing flames in the stove, it travels through empty space by
radiation
The moon's surface is heated by the sun
radiation
a person uses heating lamp to dry off after a shower
radiation
although you do not touch the flames, your chest falls warm while you are sitting in front of a fireplace
radiation
cooking food in a microwave
radiation
cooking marshmallows over a fire without touching flames
radiation
heating a greenhouse
radiation
on a hot summer day, you close all the blinds and curtains in your home and notice it is cooler than with the blinds and curtain open
radiation
the blacktop parking lot gets hot during a sunny day
radiation
the gets warm from an open fire in the fireplace
radiation
you are warmed while lying on a blanket at the beach
radiation
Heat transfer will stop once two objects reach the same _______________________.
temperature
A metal pot was used to boil water on a stove. The cook picked up the pot by the handles and got burned. Why did the cook get burned?
the metal conducted heat to the cook's hand
Because particles of an object are always moving, heat _________________ is always happening.
transfer
An example of convection
turning on a lava lamp
energy caused by particles that _________________
vibrate
What causes convection currents in the atmosphere?
warm air rising and cold air sinking
the faster the particles vibrate, the _________________ the object will be
warmer
radiation
Does not need matter to transfer heat
