DAY 128
Essential Question: How can energy be transferred?
GOALS: SWBAT...
1. build functional machines
2. describe how energy is transferred
WARM-UP 128
1. Project Checklist
Which of the following do you still need to complete?
a. design
b. design approval from Mr. Alexander
c. materials collection
d. machine building
e. video of machine
f. video submission via schoology (I will post an assignment today, Friday)
g. paper written
If you need help with any of the above, message me via Remind App or via email josh.alexander@lausd.net
CLASSWORK
1. Rube Goldberg Paper
Paper examples:
I've included a few graded examples of papers. Use them as examples and/or templates. Remind message or email with any questions. LINK: https://docs.google.com/document/d/1eWlQgicowoW-MBX8Mi91BBVT_xPQSCfuSFfAqazGNww/edit?usp=sharing
- Mr. A
From your project guidelines: https://docs.google.com/document/d/1NbvMBgjdU3HvjqoQVbV1dkhuEKZ3p5VnwZiVpAGwsKo/edit
Project Paper:
You will write a project paper that explains each step and each energy exchange. For example, this is an explanation of one energy exchange:
“The dominos are started on one side and each falls into the next. The Potential Energy of each domino drops as it falls and its Kinetic Energy rises. The final domino hits a marble so it does work on the marble to increase its Kinetic Energy. I chose this energy transfer because it showed both PEg and KE, and because it was reliable and repeatable. It worked every time.”
Your paper should include why you constructed each energy transfer the way you did and describe the materials you chose. For example, let’s say you needed to raise a marble so it could gain more energy. You might use a pulley system, and state, “I used a pulley with string and two cups to increase the height of a marble. Increasing the height meant the marble would have more potential energy, and therefore have energy to continue moving components in the machine”
2. Machine building
3. Thermodynamics Exam & Simple Machines Quiz
- make sure you've completed both. Assignments are on schoology
Unit Goals:What is a wave? How do they act? How do waves differ?
Goals: SWBAT...
1. Discuss waves’ properties using common vocabulary and they will be able to predict the behavior of waves through varying medium and at reflective endpoints
Warm-Up (5min):
on board
CLASSWORK
1. #128A: Knowledge Inventory: Waves
https://www.youtube.com/watch?v=lTHgiC60ajE
in addition to the above questions, answer the following:
C1. How does a wave transfer energy?
C2. Define "Amplitude"
C3. Define "Frequency"
C4. Define "wavelength"
C5. Define "period"
C6. What does transverse mean? (Think about what the word part "trans-" means...)
C7. What does longitudinal mean? (Think about latitude and longitude...)
C8. Consider sound. Define "pitch'
C9. When a wave strikes an object, what happens to the energy in the wave (hint, more than one answer)
C10. Describe the Doppler Effect
C11. What are the three primary colors?
C12. Write the colors of visible light in order from longest wavelength to shortest wavelength
2. #128B: What is a wave
A. Define the term, "wave"
B. Write a list of characteristics that you could use to describe the physical qualities of a wave. Describe each characteristic in words that any person could understand. Leave some writing space for characteristics that you might think of later during the activity
Definition: "disturbances in the space-time continuum"
aka, a movement (space) that takes time
3. #128C: Waves on a String
Directions:
1. Open Waves on a String, investigate wave behavior using the simulation for four minutes.
LINK --> https://phet.colorado.edu/en/simulation/wave-on-a-string
As you look at the waves’ behavior, talk with your groupmates about some reasons the waves might act the way they do.
2. Consider the list of characteristics you wrote in the 128B. Do you see any of those characteristics present in the sim?
3. With the Oscillate button on and with No End checked, investigate waves more carefully using the Amplitude slider.
Write answers to the following after your group has talked about each and agreed.
a) Define Amplitude in everyday language.
b) Explain how the wave behaves as the Amplitude changes using the characteristics you described in #128B
c) Tomorrow, we will use a rope/string/ on the floor for some investigations and explain how you could change the Amplitude of a wave.
At Home Learning (HW)
1. Complete #128A & B
2. Complete any missing peer/self evaluations, papers, projects
tmw
define wave from 128B
continue activity
clean up time