Lesson 4-5 +Heat Transfer

TE

total energy of particles

total energy of particles

TE

keyword: total

TE

Keyword: transfer

het

heat

transfer of TE

Transfer of TE

heat

keyword: average

Temperature

temp

avg energy of particles

avg energy of particles

temp

measured w/ thermometer

temp

going from gas to liquid

condensation

going from liquid to gas

boil/evaporate

going from liquid to solid

freezing

going from solid to liquid

melting

going from solid to gas

sublimation

going from gas to solid

deposition

how do thermometers work?

particles collide w/ bulb, transfer TE to bulb, causes fluid expansion, reaches thermal equilibruim

temp below MP

solid

vibrating stationary particles

solid

fixed shape & volume

solid

between MP & BP

liquid

vibrating flowing particles

liquid

fixed volume changing shape

liquid

temp above BP

gas

independent particles

gas

changes shape+volume

gas

where does altitude sickness come from?

same ratio, air is less dense, not enough oxygen

why does BP change with pressure?

less pressure makes molecules spread out

the molecules are closest in what state?

solid

in what state are the molecules close-ish?

liquid

in what state are the molecules far apart?

gas

in what state do the molecules travel fastest?

gas

in what state do the molecules travel fast-ish?

liquid

in what state do the molecules move slow?

solid

example of convection

a pot stirring it self because it heats up, rises, cools down then sinks

example of conduction

when cooking, the entire pot gets hot

example of raadiation

heat radiates away from stove