1. ENERGY TRANSFER IN TEMPERATURE
INSTRUCTED BY MS SORN

2. AGENDA DO NOW (ACCESSING PRIOR KNOWLEDGE) DO NOW PT. II
RECAP OF COMPREHENSION CHECK
NOTEBOOK FORMAT
LESSON
MINI ACTIVITY
COMPREHENSION CHECK

3. ASSIGNED READING: ENERGY TRANSFER IN TEMPERATURE (DO PG. 4)
TODAY’S HOMEWORK
ASSIGNED READING: ENERGY TRANSFER IN TEMPERATURE (DO PG. 4)
ASSIGNED READING: HEATING THE ATMOSPHERE

4. LEARNING TARGET
A VOLUNTEER TO READ…

5. OBJECTIVES
Be able to define and thoroughly explain conservation of energy and energy transfer:
The amount of energy transfer needed to change the temperature of a matter sample by a given amount depends on the nature of the matter, the size of the sample, and the environment.

6. By definition, energy is : the ability to do work or cause change.
WHAT IS ENERGY?
By definition, energy is : the ability to do work or cause change.
a fundamental entity of nature that is transferred between parts of a system in the production of physical change within the system and usually regarded as the capacity for doing work
usable power (as heat or electricity); also :  the resources for producing such power

7. What is thermal energy?
By definition, thermal energy is the average kinetic energy of the atoms and molecules of a substance. 
Kinetic energy - energy associated with motion
The molecules and the motion of atoms create thermal energy, which is present in all matter. 

8. energy associated with motion
What is kinetic energy?
energy associated with motion
This kinetic energy generates heat, which is measured by temperature that can be transferred within a system.

9. THERMAL ENERGY
A difference in temperature between two locations will cause a flow of heat along a (thermally) conducting path between those two locations. Heat will flow from a hotter object to a cooler object.

10. Energy Transfer in Temperature
Figure 1. Thermal Energy Flow

11. WHAT IS MATTER?
a :  the substance of which a physical object is composed
b :  material substance that occupies space, has mass, and is composed predominantly of atoms consisting of protons, neutrons, and electrons, that constitutes the observable universe, and that is interconvertible with energy

12. WHAT IS AN atom?
:  the smallest particle of an element that can exist either alone or in combination

13. AVERAGE KINETIC ENERGY

14. CELSIUS VS. FAHRENHEIT
Although the SI unit for temperature is the Kelvin (K), laboratory thermometers generally use the Celsius scale to measure temperature.

15. Transfer of Thermal Energy
Heat transfer occurs when two objects or systems are at different temperatures.
Energy moves from objects with the higher temperature and into objects with the lower temperature. 
The energy cools the former and heats the latter. This transfer happens in three different ways: by conduction within solids; by convection, or the flow of liquid or gas; and by radiation, which can travel across space. 

16. 3 FORMS OF HEAT TRANSFER
Figure 2. Model of Heat Transfer

17. CONDUCTION
Conduction is the transfer of heat within solids or when solids are in contact with each other, such as the heating element on a stove that is warming the metal pot above.

18. CONVECTION
Convection is the transfer of heat by the flow of liquid or gas, such as warm ocean currents moving toward cooler ocean currents or when warm air masses move into areas of cooler air masses.

19. RADIATION
For shorter wavelengths (ultraviolet and X-ray), the radiation’s energy is absorbed within the atoms or molecules, which may possibly ionize them by knocking out an electron. Unlike conduction and convection, the transfer of heat by radiation does not need a medium to travel through. The Sun’s radiation warming the Earth is an example.
Radiation is the transfer of heat by electromagnetic waves. When matter absorbs light or infrared radiation, the energy of that radiation is transformed into thermal motion of particles

20. Factors Affecting Thermal Energy Transfer
The type of matter involved affects the transfer of thermal energy. Different objects have different thermal properties.

21. Factors Affecting Thermal Energy Transfer
These factors include:
1) Whether the object is an insulator or conductor
2) The amount of matter
3) The surrounding temperature

22. Factors influencing thermal transfer: INSULATORS VS. CONDUCTORS
Insulators: Objects that do not easily transfer thermal energy are called insulators.
Wood
Thick paper  
Conductors: Alternatively, objects that can transfer thermal energy easily are called conductors. 
Metal
Water
Wood, for example, is commonly used as an insulator. Thick paper, which contains wood fibers, can also be used as an insulator. For example, hot coffee from a café might have a paper wrapper around the cup to protect the drinker’s hand from the heat inside. Tiny pockets of air insulate the cup from heat transfer. Objects that are not dense and are non-metal make good insulators. For those reasons, pots have rubberized or wooden handles to prevent the heat from burning one’s hands.
Metals are usually good thermal conductors. Their molecules are packed tightly so heat is easily transferred. Water is also a good conductor of heat, but heat energy is rapidly lost when the source is removed. Sand and sidewalk surfaces can become extremely hot on beaches during the summertime because the Sun’s thermal energy is transferred to the exposed surface of Earth.

23. INSULATORS VS. CONDUCTORS
Figure 3. Insulators
Figure 4. Conductors

24. Factors influencing thermal transfer: amount of matter
The amount of matter: The transfer of thermal energy is also affected by the amount of matter involved.
Pouring a liter of boiling water into a liter of room temperature water will result in a greater temperature change in the, now, two liters of water compared to pouring a liter of boiling water into a tank filled with 50 liters of room temperature water. The greater amount of matter decreases the thermal conductivity of a substance, or it decreases how easily heat can be transferred through the substance.

25. WHAT IS MATTER?
a :  the substance of which a physical object is composed
b :  material substance that occupies space, has mass, and is composed predominantly of atoms consisting of protons, neutrons, and electrons, that constitutes the observable universe, and that is interconvertible with energy

26. AMOUNT OF MATTER
Figure 5. Transfer of Thermal Energy

27. Factors influencing thermal transfer: SURROUNDING TEMPERATURE
Surrounding temperature: The environment also affects the transfer of thermal energy between objects. Thermal energy transfers from hotter objects to cooler objects. The temperature of the surrounding environment can affect the transfer of energy.
Pouring a liter of boiling water into a liter of room temperature water will result in a greater temperature change in the, now, two liters of water compared to pouring a liter of boiling water into a tank filled with 50 liters of room temperature water. The greater amount of matter decreases the thermal conductivity of a substance, or it decreases how easily heat can be transferred through the substance.

28. TRANSFER OF THERMAL ENERGY
Figure 6. Transfer of Thermal Energy