Phases of Matter
What happens to molecules when you add energy? (Double Jeopardy)
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 direct touch.
Conduction
What happens to molecules when you remove energy? (Double Jeopardy)
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
A can koozie is a(n) . . .
Insulator
Heat transfer through water or air circulation.
(Double Jeopardy)
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
Heat transfer through empty space.
Radiation
During melting, energy is _____ to the molecules.
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
Name a conductor.
Answers vary
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.
Conductors move heat . . .
Very well
Insulators move heat . . .
Name an insulator.
Answers vary