How does a radiator heat a room?
Aim: How is heat
transferred?
Topic: Unit 6 Meteorology
Main Idea: Methods of Heat
Transfer
1) Why does the
temperature of an object
drop?
Temperatures decrease when the
object loses heat energy
(decrease in kinetic energy).
2) What is true about objects
that absorb heat well?
They also radiate heat very well.
Metals absorb fast and radiate
fast.
3) Which way does energy
flow?
Energy always flows
from hot objects
(heat source) to
cold objects (heat
sink).
Convection
Circular
movement of
liquid or gas
• Warmer, less
dense substance
rises
• Due to density
and temperature
differences
•
Conduction
Heat transfer in
solids
• Molecules must
touch to transfer
heat
• Good conductors
are good radiators
•
Radiation
Transfer of
energy through
electromagnetic
waves
Does not require
molecules at all
• How sunlight
travels through
empty space
•
•

Summary