1. Temperature and Heat
I think therefore I am….
a heater

2. How does heat affect me?
Industrial Revolution: the first time heat was used to do mechanical work.

3. How does heat affect me? Weather Health Travel (Titanic!) Sports?
Drinking

4. Temperature: How hot a substance is (subjective)
-Measure of motion of molecules
-Measure of average kinetic energy of molecules (objective)

5. I have absolutely no idea what he means by ‘average kinetic energy of molecules’, but I will write it down in my notes all the same….. I really wish we could play a game to help me understand.

6. Kinetic Energy Theory Game
Round 1: walk about the room at a speed of your choosing for 30 seconds

7. Kinetic Energy Theory Game
Round 2: Find the people in your table; connect yourselves together, and then walk about the room at a speed of your choosing for 30 seconds

8. Kinetic Energy Theory Game
Round 3: Everyone in the class connect yourselves together, and then walk about the room at a speed of your choosing for 30 seconds

9. Kinetic Energy Theory Game
When were you able to move the fastest?
When were you moving the slowest?
How does that relate to ice, water, steam and H2O?

10. Kinetic Molecular Theory~ matter is composed of small particles (molecules) that are in constant motion; how much motion (KE) the molecules have determine the state of matter (solid, liquid, or gas).

11. Measuring Temperature
Farenheit (English units)
Celsius (Metric units)
Kelvin – Sets zero as lowest possible temperature
Absolute Zero – lowest possible temperature where all motion of molecules has stopped.

12. Measuring Temperature

13. Internal (thermal) Energy ~ the sum of all energies in a substance
Which has more internal energy; the sea of glacier water, or the cup of steaming coffee?
Which has the higher temperature?

14. Heat ~ energy flowing from a substance of high temperature to a substance of lower temperature

15. Specific Heat Capacity ~ like “thermal inertia”; an objects resistance to change in temperature (subjective)
Quantity of heat necessary to raise the temperature of a unit mass by 1 degree (objective)
Example: silver: 235 J/kg K
water 4180 J/kg K
So, water has a higher specific heat than silver . . .
but what does that mean?

16. High Specific Heat (a lot of resistance to change):
Heats up ____________
Cools down __________
Quantity of heat necessary to raise the temperature of a unit mass by 1 degree (objective)