ESRT pg 14 - T-Birds Earth Science - Home
Transcript of ESRT pg 14 - T-Birds Earth Science - Home
ESRT pg 14
Topic: Transfer of Energy
3rd
Energy travels…
High Energy Low Energy
Energy will stop transferring when…
Energy Becomes Equal
Heat Energy Measures how fast molecules are moving
Faster particles = higher temps
Slower particles = lower temps
All matter radiates energy, except at absolute zero.
Absolute zero = Temperature where all molecules stop
moving
Temperature and Energy: How
Cold is Cold?
Deep outer space =
3°K
Coldest temperature in a laboratory =
0.000,000,001
A few billionths of a degree above absolute zero
Now that’s cold!
Methods of Energy Transfer
1) Radiation
2) Conduction
3) Convection
Radiation Transfer of energy in empty
space, solid, liquid and gas
Ex: Sun’s energy reaching the Earth
Conduction
Vibrating molecules hit each other transferring energy
*Best in solids – molecules closer together.
Conduction
Convection Transfer of energy by different densities
*Best in gases & liquids
Name that Heat Transfer Method
Convection
Radiation
Radiation
Convection
Conduction
Final Question: • What are the three methods of heat
transfer in the following picture?
1
2
3