1. Chapter 10 Lesson 2 and 3

2. Sunshine State Standards
SC. 7. P Observe and describe that heat flows in predictable ways, moving from warmer objects to cooler ones until they reach the same temperature.
SC. 6. S Select and analyze the measures of central tendency to summarize a data set.
LA The student will organize information to show understanding (e.g. representing main ideas through charting).

3. http://player. discoveryeducation. com/index. cfm
First 6 minutes

4. What determines the temperature of an object?
Is a measure of how hot or cold something is compared to a reference point.
Remember: What tool did we learn to measure temperature with from Ch. 1 L. 3?
Thermometer
What were the 3 scales we discussed that are used to measure temperature?
Kelvin, Celsius, and Fahrenheit
Which of these scales was the official SI unit?
Kelvin!

5. Temperature scales Fahrenheit scale-
used to measure temperature in the US. Measured by degrees F.
Celsius scale-
Used to measure temperature in most countries. Measured by degrees C.
Kelvin scale-
Used in science. Measured by K.
0 Kelvin is ABSOLUTE ZERO
the lowest temperature possible

6. Boiling point of water
Freezing point of water
Absolute zero

7. average or mean of the kinetic
Temperature is the average kinetic energy of the particles in an object
Find the
average or mean of the kinetic
energy of the
particles
in the pot
= 55
55/ 5=
Mean =11 15 13 10 9
Review:
What is the mode? 13
What is the range?
15-9= 6
What is the medium?
Medium =13 13

8. Thermal energy versus temperature
Although thermal energy and temperature are closely related, they are not the same thing.
Two objects that have the same temperature can have different thermal energies
Thermal energy is the total energy of all the particles of an object
Temperature is the average kinetic energy but thermal energy depends on the objects temperature, number of particles, AND the arrangement of the particles.

9. Both the lake and the water in the glass have the same temperature
Thermal energy versus temperature
Both the lake and the water in the glass have the same temperature
Which has more thermal energy the lake or the glass and why??
The Lake because there are more particles in the lake then in the glass of water, even though their average kinetic energy is the same temperature.

10. HEAT
The warm air from the room is transferring to the cooler water.
The water is transferring thermal energy to the cooler ice.
These transfers of energy from warm to cool will continue until the ice is melted and the water is the same temperature as the room.
Heat is the transfer of energy from a warmer object to a cooler object.
Heat will continue to transfer until both objects are the same temperature.

11. Heat transfer

12. What are the three ways heat is transferred
Convection
The heat transfer that occurs only in fluids such as air and water.
Convection currents
Conduction
Transfers heat from one particle of matter to another within or between two objects.
Touch
Radiation
The transfer of energy by electromagnetic waves.
Does not need matter to transfer, can transfer through space.

16. GOT IT??
Lets see if you can follow along!

17. http://www. teachertube. com/viewVideo. php