DAY 104

Goals

1. Model how a system of a hot object and a cold object will change over time

2. Convert temperatures between ºC and ºK

3. State whether wood or iron are good conductors or good insulators

Warm-Up 104

1. What is the relationship between energy and temperature?

2. Two objects with different temperatures are placed in contact. When will energy stop flowing from high (hot) to low (____)? 

3. What is 20ºC in Kelvin?

CLASSWORK

1. Review: Temperature & Energy Activity

    1. Review 6 & 7

    2. https://phet.colorado.edu/sims/html/energy-forms-and-changes/latest/energy-forms-and-changes_en.html

2. 104A: Conversion Practice

    Copy, and complete

    1. As thermal motion of atoms increases, temperature ___________.

    2. As the temperature of an object drops, the thermal motion of atoms, and thus their kinetic energy ______________.

    3. Fill in the temperature for Absolute Zero for each scale: _____ºF _____ºC     _______ºK

    4. Copy & complete the following chart. 

        LINK: https://docs.google.com/spreadsheets/d/1mlRe87vNC55rUD40OpeDVcFX-9sakFtxX3fAwHbtOY8/edit?usp=sharing

3. 104B: Conduction Introduction

Copy and Answer the following while watching the video

    1. Prof Hewitt says you can touch _______ when it's hot out of the oven. Is that true? 

    2. Would you want to touch hot wood for a short or long period of time? Why?

    3. Which would be safer for you to touch, 100*C (212*F) wood, or 100*C (212*F) iron. Why? Starts with C, ends with....

    4. Why is air a poor conductor? Think about the particles in are. Are they closely packed together (high density) or spread out (low density)

    5. How do the down comforter, animal fur,  styrofoam, or thermal underwear keep you warm? 

    6. How does holding air prevent energy transfer?

    Video LINK: https://conceptualacademy.com/course/conceptual-physics/161-conduction

4. 104C: Exit Questions

1. Can you touch a hot pan without feeling pain? What about a hot pan while wearing an oven mitt?

2. What's the difference between the two scenarios?

Learning at Home/HW

Complete CW for HW.

Crash barrier Lab due tonight - if you need additional info, or can't find your data, let me know during class or via Remind App

GOALS: SWBAT...

● Be able to describe the relationship between energy and temperature. 

● Be able to describe in words and pictures how energy is transferred between two objects at different temperatures and explain when and why this process stops. 

● Be able to plan an investigation to produce data to support a model of how the system of a hot object and a cold object will change with time. 

WARM-UP

1. Describe how a thermometer works, using high school level academic language, and including a description of what's happening at the ATOMIC LEVEL

CLASSWORK

104A: Review CW/HW from yesterday

https://docs.google.com/document/d/1Xq2agFM48XOy4XieMn_ldA1bqstgPhXZjoDTnOnuBLQ/edit?usp=sharing

104B: Temperature & Energy Activity

    1. Read the Handout

    2. https://phet.colorado.edu/sims/html/energy-forms-and-changes/latest/energy-forms-and-changes_en.html

HOMEWORK

Phases and Changes Lab due tomorrow on paper