Objective: KWBAT demonstrate their knowledge of our unit by categorizing key vocabulary, identifying the TKE and AKE of a system, correcting an unstable system, and making a water heater recommendation.
Match the definition to the correct vocabulary term.
Each definition will only be used once.
the total kinetic energy of all the molecules that make up a sample
a measure of how hot or cold something is, also known as average kinetic energy
the ability to make things move or change
a set of interacting parts forming a complex whole
a balanced state in which a system is stable, such as when two or more samples are at
the same temperature
a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list
Average
Energy
Equilibrium
System
Temperature
Thermal Energy
Part 2: Average Kinetic Energy and Total Kinetic Energy
1 point
1
Question 2
2.
What is the total kinetic energy of the molecules in this system (Sample A + Sample B) at the moment shown in the diagram above?
1 point
1
Question 3
3.
What is the average kinetic energy of the molecules in this system?
Part 3: Correcting a friends model
1 point
1
Question 4
4.
Jack's model includes one object consisting of two molecules and one object consisting of six molecules. He put 16 energy cubes in each object and stated that his model showed the two objects at equilibrium.
Explain what is wrong with Jack’s model. Is his model showing equilibrium?
Sentence Starter:
Jack's model is wrong because....
I know this because equilibrium means.....
Part 3: Helping a Chef!
1 point
1
Question 5
5.
A chef needs to increase the temperature of a food dish. She thinks she can do this by stacking another dish on top of it. She has three dishes to choose from for the top dish: A, B, and C.
Which one of these dishes would make the food dish the warmest when placed on top of it?
1 point
1
Question 6
6.
At equilibrium, both the Food Dish and the Top Dish should....
(hint: look at Part 1, what does it say for equilibrium?)
1 point
1
Question 7
7.
Explain how the energy and temperature of both the top dish and the food dish will change when the food dish warms up, and why.
(hint: what is going to happen to both of the dishes when they are in contact?)
Use your answers for Q6-Q8 to help you!
Sentence Starter:
The energy and temperature of the top dish and the food dish will change because...
Part 4: Balancing a System
Goal: Create a stable system by having the same average kinetic energy in both objects.
First, identify the average kinetic energy of Object A.
Second, decide one of two ways to make this system balanced.
(Hint: did you want to share or did you want to borrow)?
2 points
2
Question 8
8.
1. Click on the Shapes menu and select the rectangle.
2. Click on the Line menu, select the color yellow, and click on the box that says : FILL SHAPES.
3. Make Object B have the same average kinetic energy as Object A.
Hint: Each yellow cube represents 1 unit of energy!
Part 5: Recommending a Heating System
We have discovered that although both systems are able to heat up the school, one system heats up the school more!
Question: Which heating system will warm the air in the school more?
Select one or two pieces of evidence as support.
Then, explain why that evidence matters!
Evidence links:
Thermal Energy Sim Models
“Thermal Energy is NOT Temperature” article
Energy Cube Models
Heater System SIM Trials
1 point
1
Question 9
9.
Based on the evidence provided, I conclude that the ______ will warm the air in the school more?.
3 points
3
Question 10
10.
Type your CER statement that answers the question here.
Claim Sentence Starter:
I think that the ____ System will heat up the school more.
