Thermodynamics
AP2 Thermo Fall 2020.docx
Class #7
Heat and Temperature
Objectives:
Understand where heat comes from and understand the difference between heat & temperature
Reading:
Videos:
Practice Problems:
Virtual Lab:
Phet Gases Lab Phet Gases Lab Worksheet
Class #8
Heat Transfer, Heat Expansion, and Thermal Conductivity
Objectives:
Understand that heat transfers from hot to cold
Understand the three types of heat transfer: Convection, Conduction, Radiation
Understand that different materials have different heat expansion coefficients and to be able to apply heat expansion formulas to solve problems.
Convection: Heat is transferred by motion of a fluid, such as water or air
Conduction: Heat is transferred via objects that are in direct contact with each other
Radiation: Heat transfer via electromagnetic waves
Reading:
Podcast
Videos:
Practice Problems:
AP2 Class #8 Conductivity (note that heat flow is always negative given that heat flows from warmer to cooler). Answers
AP2 Class #8 Thermal Expansion Worksheet (this one is straightforward. Contact me with any questions)
Virtual Lab:
Class #9
Ideal Gas Law
Objectives:
Understand the Ideal Gas Law PV=nRT
Understand the variables and constants in the Ideal Gas Law
Be able to compute for an unknown variable using equation PV=nRT
Reading:
Videos:
Practice Problems:
Virtual Lab
Class #10
States of Matter
Objectives:
Students will understand the states of matter of solids, liquids, and gas and understand why substances can change from one phase to another
Reading:
Videos:
Podcast:
Virtual Lab:
PhET: States of Matter AP2 Class #10 Phet States of Matter Lab Worksheet
Class #11
The Laws of Thermodynamics
Objectives:
Reading:
Videos:
Practice Problems:
PV Diagrams & Work Done By a Gas vs Work Done On a Gas
Work done by the gas. Constant pressure was applied, but the volume of the gas expanded due to the addition of heat. PV = nRT
PV = nRT
Work done on a gas (assuming right to left piston travel)
PV Diagrams & Work
The temperature increases the further away it is from the origin (PV = nRT).
The work done is the area under the curve.
Isothermal vs. Adiabatic
Classes #12 & 13
P-V Diagrams
Objectives:
Students will understand the definition of Isothermic, Isobarametric, Isovolumetric, and Adiabatic processes.
Students will be able to analyze and create PV diagrams to describe Isothermic, Isobarametric, Isovolumetric, and Adiabatic processes.
Understand the structure and interpretation of PV diagrams, including how Work on or by a gas is depicted
Understand how and why heat can be added to or removed from a system and how that is depicted in PV diagrams
Understand Thermodynamics vocabulary of Isobaric, Isothermal, Isovolumetric, and Adiabatic
Reading:
Videos:
Zoom Session:
Practice Problems:
Class #14 & Class #15
Thermodynamics Project
Objectives:
Investigate a thermodynamics process that interests you
Examples:
How does a refrigerator work?
How does an RV refrigerator work using either propane or electricity?
How does a microwave work?
How does an infrared thermometer work?
The Carnot Cycle
How do heat lamps work?
How does antifreeze work?
How does salt help ice melt in the winter?
Why do you need salt to make ice cream (old fashioned crank) Why do you need to add salt to make the environment colder?
Global warming. Present data for both sides of the political argument.
Class #
Thermo Review
Objectives:
Reading:
Videos:
Homework:
Virtual Lab: