Phases of Matter
What happens to molecules when you add energy (Heat)?
Speed up
Spread apart
What direction does thermal energy ALWAYS travel?
Hot to Cold
These materials INCREASE heat transfer.
Conductors
These materials DECREASE heat transfer.
Insulators
Heat transfer through liquids and gases is ...
Convection
What happens to molecules when you remove energy (Heat)?
Slow Down
Move closer together
If I open the window on a cold day what happens to the air in my house?
The hot air from inside moves outside.
A metal spoon is a . . .
Conductor
Styrofoam is an insulator: True or False
True
Heat transfer as convection, COLD air rises and WARM air sinks: True or False
False
What is it called when a molecules goes from solid to liquid?
Melting
If I have a cold can of soda on the counter, what will happen to the thermal energy?
The heat will move from the outside can to inside the can.
Conductors increase . . .
Heat transfer
Insulators DECREASE . . .
Heat transfer
When its cold outside, my jacket is an insulator because it traps in my ______ heat.
Body
During melting, energy (heat) is _____ to the molecules.
Added
Heat transfer is really neat. It always goes from . . .
Hot to Cold
A conductor can move the _____ out of a hot drink.
Heat
An insulator can keep the _________ out of a cold drink.
Heat
Which is most responsible for the uneven heating of the air in the atmosphere.
Convention
What is it called when a liquid turns to a gas?
Evaporation
If I have a hot cup of coffee, what will happen if I leave it on my desk for 3 hours in a regular ceramic mug without a lid?
(Double Jeopardy)
The heat will LEAVE the cup and the coffee will become cold.
Why is metal a great conductor...
because metal allows heat to transfer easily
Why is a styrofoam cooler great at keeping the cold items inside of it cold?
Because it doesn't allow heat from the outside to transfer in easily.
A hot air balloon goes up into the sky by convection because the warm air under the balloon...
Rises, causing the hot air balloon to go up