Quest 2: Wave Behavior

It is important to note that Quest 2 is completing just 1 assignment in Google Classroom. The Behavior of Waves Unnotes is one document. The document is broken up into stations. Each station is a post in the quest. You will check in with Mrs. Roehm after each post, but she will not sign anything until the end of the Quest. (Still check in after each post though!)

Q2P1: PVLEGS and CER Presentations

The slide deck showed below (and linked here) includes the directions for filling out the graphic organizer chart assigned to you in Google Classroom. Read the slide deck carefully and ask Mrs. Roehm if you have questions.

Tips:

When writing in the Model Box, be very specific about what you are going to do in your model AND what evidence you are looking for. For example, you shouldn't just write, "slinkies." You could write "I am going to push a slinky hard and soft and look for how compressed the slinky gets."
The text evidence is linked in the slide deck of directions. (Also linked here.)
When picking your text evidence, remember that your text evidence must bring the reader new information (it shouldn't just repeat the claim.)
If your claim has two science words (like pitch and frequency), your text evidence should include the definitions of both words.
If your claim has amplitude it in, you need to determine what type of wave your model is producing (transverse or longitudinal) so you can give the definition of that specific type of wave amplitude.
You may want to create your own reasoning tree before writing your reasoning. Your reasoning must include all of the key words from text, lab and claim, it must explain the science why and must be braided (not pigtails).
Remember the format for science reasonings that we have been using (CER Notes linked here.)
The column for "Gestures" is where you write what you are going to do with your hands while you present your script.

Show Mrs. Roehm your completed assignment and get a signature.

Q2P2: Vocal Cord Model

Sound is a mechanical wave. A mechanical wave is a wave that transfers energy through matter. Specifically, sound is a wave that is produced by vibrating an object and travels through matter.

Touch your vocal cords and speak in a high pitch and a low pitch. Do you feel the vibrations? Do you feel any difference in vibrations between high and low pitches? Our vocal cords vibrate in order to produce a sound and that the differences in the vibrations cause the differences in the pitches that we speak.

Directions:
1. Watch this video to see a model my students made of how a speaker produces sound. It is important that you understand how the model these students created is a model of how sound waves are formed.

2. Open the Behavior of Waves Un-Notes Assignment from Google Classroom under Quest 2: Wave Behavior.

3. Read the "Sound vs Light UnNotes" Section. Stop reading when you get to the "Questions" section/Corn Starch and Water Question. (The Corn Starch and Water question is the next post.)

4. Look at the picture of the speaker with the sound waves coming out from it on the first page of the Behavior of Waves Un-Notes Assignment. Come up with a scientific explanation why pictures of speakers often have those "arced" lines coming out from them representing sound.

5. Come up to Mrs. Roehm and tell her with your explanation. You don't have to write your answer down. Just tell her.

6. You have a choice here....you can check in with Mrs. Roehm with your answer right now if the line is short or if you have questions. Or, you can check in with Mrs. Roehm with your answer when you check in Post 3.

Mrs. Roehm will sign for Posts 2 - 5 when you have finished Post 5.

Q2P3: Corn Starch and Water/Bell in a Vaccuum

1. Watch the video below.

2. Answer the Corn Starch and Water Question on the Behavior of Waves Un Notes Assignment in Google Classroom.
3. Watch this video. (It is important for you to hear (or not hear) the sounds in this video.

4. Answer the Bell in a Vacuum Demonstration question on the Behavior of Waves Un Notes Assignment in Google Classroom.
5. Don't turn in the assignment yet - You will be answering the rest of the questions on this document in upcoming posts.
6. Show Mrs. Roehm your answers for those two questions. You do not need a signature yet, but you do need to check in with Mrs. Roehm.

Mrs. Roehm will sign for Posts 2 - 5 when you have finished Post 5.

Q2P4: Light Waves

1. Light waves are transverse waves. However, because light can travel through space, it cannot be a matter (mechanical) wave like sound waves.

Go to the station in the classroom called "Light Interaction With Matter".

Record the starting temperature of the thermometer in the data table on Behavior of Waves Un Notes Assignment in Google Classroom.

Then, put the end of the thermometer on the light bulb in the utility light for 1 minute.

Record the Final Temperature in the data table on the Behavior of Waves Un Notes Assignment in Google Classroom.

Fill in the blank in the sentence below the data table.

No need to check in. You will check in your answers after completing Post 5. Mrs. Roehm will sign for Posts 2 - 5 when you have finished Post 5.

Q2P5: Refraction

The path that light travels can be traced as straight lines except at the surfaces between different transparent materials where the light path bends.

Important Definition:
Refraction - the bending of a wave as it enters a new transparent medium at an angle. Refraction occurs because waves travel at different speeds in different mediums.

Why does refraction occur?
1. When light goes through two transparent objects, it bends, or refracts because light travels at different speeds in different mediums.
2. The bigger the difference in the speed (frequency) that light can pass between two transparent mediums, the more bending that occurs.

You will do 2 lab stations for this post.

Go to the Beaker and a Straw Station in the classroom.
- Fill a beaker with water.
- Place a straw in the beaker
- Look at the straw at eye level as it sits in the beaker.
- Answer the Beaker and a Straw question on the Behavior of Waves Un Notes Assignment in Google Classroom. (Don't show Mrs. Roehm until you do the Disappearing Test Tube Lab described below.)
If you are confused or absent, you watch this video of the lab.

Go to the Disappearing Test Tube Station in the classroom.
1. Safety tip: When setting test tubes in the beakers, do so really gently. If you drop them in the beakers, they break.
2. Take the test tube filled with vegetable oil and set the test tube in the beaker of vegetable oil. Step back a few steps and look at what the test tube looks like. (Don't pour out the vegetable oil!)
3. Put the test tube back in the empty beaker you got it from.
4. Important Fact: Light travels through vegetable oil and glass at the same speed! That can cause a cool thing to happen.
5. Take a test tube filled with vegetable oil and gently set the test tube in the beaker filled with vegetable oil. (DO NOT dump out the vegetable oil. The test tube stays full of vegetable oil!)
6. Back up and look at the beaker from a distance. Can you see the test tube? It should appear to have almost disappeared! (If it doesn't, get Mrs. Roehm.)
7. Put the test tube of vegetable oil back in the empty beaker you got it from.
8. Answer The Disappearing Test Tube question on the Behavior of Waves Un Notes Assignment in Google Classroom.
*If you are confused about what you should be seeing or if you are absent, you could watch this video of the lab.

Go show Mrs. Roehm your completed answers. She will sign for the entire quest and give you a stamp. After getting your stamp, make sure you turn in your assignment in Google Classroom.