DAY 152
Video lesson for today (9 min): https://youtu.be/J8ZQOgRniRo
GOALS: swbat...
1. describe what sound is
2. explain an example of the Doppler Effect
WARM-UP: (4min)
1. Have you ever noticed that an object moving towards you makes a different pitch sound than the same object moving away from you? (yes/no)
2. Well, it does. So, why? Why does that happen? And don't just say, "Doppler Effect." Actually say why ;-)
CLASSWORK
It's a 'learning through demonstration and doing' kind of day today
0. Edpuzzle views do not count as views on YouTube
I love edpuzzle, but because it ports youtube videos through its site, and doesn't allow youtube to get demographic info about viewers, youtube doesn't count those views. Mr. P (flipping physics) needs to earn income from his videos to offset the time it takes him to make the videos. He gets some of that from Patreon (I pay him $120/year), but could use more. So, if you're up for it today, watch the videos today on youtube, and then head to edpuzzle and just answer the questions. Or, watch the video on edpuzzle, and then let the youtube video play while you're taking a shower. And if you like the videos, give a like and a comment. Let's support free quality content, so that it doesn't disappear.
More info here: https://www.flippingphysics.com/edpuzzle.html
Mr. Alexander
1. 152A: What is sound? (15min)
I know it sounds basic, but really, "WHAT IS SOUND?"
Watch, take notes, and answer the edpuzzle questions in your notes.
link to notes: https://www.flippingphysics.com/uploads/2/1/1/0/21103672/0327_lecture_notes_-_what_is_sound.pdf
link to edpuzzle video: https://edpuzzle.com/media/5e6cd473b97aa0411cf0aa1f
link to youtube video: https://www.flippingphysics.com/sound.html
2. 152B: What is the Doppler Effect (10min)
AKA, why is sound pitch different for an approaching vs. retreating object?
Watch, take notes, and answer the edpuzzle questions in your notes.
link to notes: https://www.flippingphysics.com/uploads/2/1/1/0/21103672/0328_lecture_notes_-_doppler_effect_demonstrations.pdf
link to video: https://edpuzzle.com/media/5eb16809d6a8ce3f103a8e6a
link to youtube video: https://www.flippingphysics.com/doppler-effect.html
3. 152C. Document the Doppler Effect (10 min)
Find an example of the Doppler Effect, and document it. You can take a video, and explain what's happening, or if that's too complex, observe an example of the Doppler Effect in action, and explain why the pitch changes as the object passes the observer. Some examples of how to do this: observe a car driving past you, observe a plane flying by, observe your family member making a constant pitch sound as they pass you in the hallway. Go for it! :). Upload your result to Schoology.
4. 152D. Notebook Check: Upload your notes from this week (5 min)
Make a .pdf and upload it on Schoology
Day 148-152 only. Please upload a .pdf Here's how to do that. Instructions LINK
Notebook check is due by Sunday, 11:59pm, so if you need extra time, you have it.
Next week we do our last sound activity, about sonic booms and bow waves. Then it's on to light waves and color!
HAVE A GREAT WEEKEND. Even though restrictions are being relaxed, don't be the guinea pig...
ESSENTIAL QUESTION: What are the characteristics of EM waves?
Goals:
SWBAT
1. combine colors to remove (absorb) unwanted colors
2. solve color subtraction problems via algebra equations
WARM-UP (3min)
1. When you see a black object, which colors are you seeing?
2. When you see a white object, which colors are you seeing?
3. When you see a red object, which colors aren't you seeing?
CLASSWORK
1. Last Week + Quiz Announcement
- Quiz Wed
- mixing colored light (addition)
- mixing colored pigment (subtraction)
2. 152A: Review: Color Subtraction
Link to reading: (LINK)
Link to questions: LINK
A blank document for your answers is on Schoology. Type your answers there, and submit by the end of the period today.
HW
152B: What is refraction?
- write a definition in your own words
- write an example of refraction (something you've seen in your life)