Lab 2: Crash Barriers due Monday 11:59pm. 

Notebook Check this Friday. Today should include your W/U answers, and your exit questions. The Classwork will be on Schoology. 

Essential Question: How does thermal energy flow?

Goals:

SWBAT...

1. Evaluate a claim predicting the temperature of liquid water with melting ice in it

2. Gather evidence

3. Write a 2-4 sentence explanation using evidence to support or refute their claim

4. Define condensation

5. Determine a method to increase the rate of condensation

WARM-UP Day 101 (5min)

1. What is condensation? (you define it in your own words, or look up a definition)

2. List three places you've seen condensation.

3. Make a claim.  Copy and complete this statement: "The temperature of melting ice will be ___°C"

4. Earlier this week we reviewed the four phases of matter. What are they again, from least energetic to most energetic?

5. Open the lab document on Schoology: 101A: Lab 3: Phase and Changes. If you have trouble, please refresh the page prior to clicking the "request access" button

CLASSWORK

101A: Lab 3: Phases & Changes Lab

• Lab instructions are on Schoology

• Safety Concerns

  • Thermometers (glass)

  • Beakers (glass)

  • Condensation (slippery)

  • Water (slippery)

  • Hot water (burns)

• Demonstration:

  • On Demo table in front of room, and in drawings on lab document

• Timing

  • Part 1 will last the entire period. Since you need to collect data every 60s, you should set a _____ on your ______?

  • Timing for answering questions is on the lab document

  • Part 2 should begin at the 10 minute mark of part 1

  • If you get off track, you can complete Part 2 of this lab at home using common household materials (cups, ice, hot water). 

• Due Thursday (tomorrow) night 02/20 11:59pm via Schoology

Exit Question(s): (3min)

1. What trend did you notice in the temperature of the melting ice? Any idea why this trend occurs?

2. During part 2 (hot water), was the condensation inside the top cup liquid water, or water vapor?

    What phase change occurred? Need help? word bank --> (solid/liquid/gas/plasma to solid/liquid/gas/plasma)

3. Which cup had the higher rate of condensation, ice-on-top or no ice-on-top?

    Think about why that is the case. During a shower the mirror gets condensation on it because the mirror is (hotter/colder) than the steam (aka water vapor).  Same thing happened with the icy cup in your experiment. 

Debrief

Learning at Home/HW

Complete Lab 2: Crash Barrier. Due Monday 11:59pm

Complete Lab 3: Phases & Changes Lab. Due Thursday 11:59pm 

100A: Thermodynamics Pre-Learning Knowledge Inventory. Due Wednesday 11:59pm

Essential Question: What is Heat?

WARM-UP 101

Don't look up answers. At this point, there is no wrong answer.

Read the instructions listed in classwork 101A. Then answer the first five questions to the best of your ability. 

CLASSWORK

101A: Knowledge Inventory

Make a four column organizer with the following columns (see board for example)

This will take about 60 lines of paper - about 3 pages. 

Number, copy, and answer the questions below in your organizer

Rank your understanding of each concept, from 1 (low) to 10 (high)

Remember, don't look up the terms or questions for the knowledge inventory. We what to know what YOU know.

|         Pre-Learning          |Rank|            Post-Learning         |Rank|

1. What is heat? (2 lines)

2. What is temperature? (2 lines) 

3. Give three examples of things with thermal energy (2 lines)

4. If thermal energy is continuously added to a solid object, describe the changes in that object over time. (3 lines)

5. Does ice have thermal energy? (2 lines)

6. Why is it relatively safe to walk across hot coals, often called “fire walking”? (2 lines)

7. How, and in what units, is temperature measured? (2 lines)

8. How, and in what units, is heat measured? (2 lines)

9. How does a refrigerator remove thermal energy from your food? (3 lines)

10. Describe the First Law of Thermodynamics (2 lines)

11. Describe the Second Law of Thermodynamics (2 lines)

12. Compare and contrast a heat pump and a refrigerator. (3 lines)

13. Describe how thermal energy can be removed from a cold object and given to a warm object. (4 lines)

14. Describe how a thermometer works and what it measures. (3 lines)

15. Describe what effects the amount of thermal energy an object has. (3 lines)

16. When thermal energy is removed from an object at that material’s condensing or freezing point what will happen to the average kinetic energy of its particles? Explain. (4 lines)

17. What is entropy? (2 lines)

18. How does the phase that an object is in relate to its level of entropy? (3 lines)

19. List each of the six (6) phase changes and describe them. (6 lines)

20. List each of the six (6) phase changes and determine if they release or absorb energy. (6 lines)

101B: Does Thermal Energy Transfer?

Read over the Launch Lab on page 326/958. You can use the slider bar to move quickly, or the arrows to move slowly. The magnifying glass zooms.

Complete the task. Write your answers in your notebook

LINK: https://archive.org/stream/PhysicsPrinciplesAndProblemsByAGlencoeProgram/Physics%20Principles%20and%20Problems%20By%20A%20Glencoe%20Program#page/n325/mode/2up

Learning at Home (HW)

If necessary, complete 101A and B. Remember, don't look up the terms or questions for the knowledge inventory. We what to know what YOU know.

1. When you let an icy cold glass of water sit out on a warm day, condensation forms on the outside of the glass. Does thermal energy flow from the surrounding air to the glass, or from the glass to the air? 

2. If you put a few drops of water in a pan, and then heat that pan on a stove, what happens to the water? Is thermal energy going from the pan to the water, or from the water to the pan? 

3. Consider your answers to #2 and #3. Is condensation on a surface evidence of that surface adding thermal energy to the surrounding gas, or taking thermal energy away? 

- Link: https://drive.google.com/file/d/0B-AiPYEb3nFVLWN6YktMVnh3TU0/view?usp=sharing