Phase change
Solid to a Liquid
melting adding heat energy
When a liquid is heated, do the molecules of the liquid speed up or slow down?
Speed up
why does the hot hair rush inside your door when you open it in July?
The hot air outside travels towards the cold air inside.
Potential energy is also known as
Chemical Energy
materials that do not conduct heat and electricity well
insulator
Evaporation/vaporization adding heat
When you cool down a liquid such as freezing water, what happens to the speed of the molecules?
They slow down
energy can neither be ______________ or _______________
created or destroyed
kinetic
Materials that condutor heat and electricity
conductors
Boiling ice
Solid to liquid to gas
when ice is added to a warm liquid, does the cold transfer to the liquid of the heat transfer to the ice?
heat transfers to the ice
True or False: When you cook pasta, its best to use a metal spoon when stirring the boiling water.
False
when boiling water, we set the stove to high. As the heat of the stove is increasing and warming up, what happens to the temperature of water?
when heat decreases, temperature decreases.
rubber, wood, glass are examples of
insulators
DOUBLE JEOPARDY: gas to solid
deposition (hail)
George microwaves his hot chocolate. He thought it was too hot to drink, so he left it too cool on his counter. He forgot about it and came back an hour later to find it room temperature. where did the heat tansfer?
to the cups surface and then to the air in the room
Insulators are good at holing heat or coldness in. Conductors are good at __________ heat and coldness.
transferring
what is an example of mechanical energy being transferred to thermal energy?
rubbing your hands together, creating friction and warming them.
Metal, aluminum, salt mixed in water
conductors
Gas to liquid
Condensation
is condensation an example of cooling or heating?
cooling
True or False: energy is destroyed when a fire is extinguished
false, energy is transferred into steam or smoke
Give an example of electrical energy being transferred to sound energy
thunder
Two types of themal properties of material
conductor and insulators