Heat Is it just me or is it

Heat Is it just me or is it hot in here?

Heat • The average amount of K. E. of an object. • K. E. =Motion=Heat

Temp. Scales 1. Fahrenheit (Used in the U. S. A. ) – Water • Boiling Point • Freezing Point -

Temp. Scales 2. Celsius (used in science and world) –Water • Boiling Point • Freezing Point

Temp. Scales 3. Kelvin (used in science for extreme heat) • Boiling Point – • Freezing Point – • Absolute zero –

Transfer of Heat • Heat moves, cold doesn’t • Cold=the absence of heat • Equilibrium=when two objects reach the same temperature.

Heat Transfer • Conduction. Transfers heat solid to solid • Ex. )Mr. Shell handshake

Heat Transfer • Convection Transfers heat through liquids and gases. • Ex. )Boiling water on a stove

Heat Transfer • Radiation Transfers through electromagnetic waves • Ex. )Sunlight

Conductor vs. Insulator • Conductor –Something that allow heat to move through it easily. • Insulator –Something that does not allow heat to move through it easily.

Conductors • Which would feel colder? Metal or paper?

Movement of Heat • • Touch you chair. Is it cold? Wait a bit……… Is it as cold as before? Now put your hands together. What do you feel? • Rub you hands together (friction). • What kind of heat transfer is this?