Waves in 2D Test

Waves in 2D Test

Sorry I'm late, but had work.. anyways, today's class was our test which covered the Waves in Two Dimensions unit. The test wasn't THAT bad, it could of been worse. Most students took almost the entire class to complete the test, so that was basically all we had accomplished today.
Scribe for tomorrow is Pr1nce!!

Waves in 2D Review

Interference Exercise

hm mm, fortunately today's class was short because we had to go and get our pictures taken
so we didn't do much work in class. All we did was watching interference video and correcting the Interference Exercise.

Here are the answers for the interference exercise we did:

1 a) the answer is basically drawing a line on the third nodal line
b) Constructive Interference
c) 10 Nodal Lines
d) 2 cm
e) 2.5 Hz
2 a) 9.0 cm
b) 58.5 cm/s
3 a) drawing 4Th nodal lines
b) Destructive
c) 4
d) 13.2 cm

Oh yeah Ms. K assigned # 16 - 17 on the '' Green Booklet"

Hey people don't forget to complete the '' Waves in Two Dimension- Review sheet, because it's helpful and it will prepare you for the test on Wednesday. If you're still struggling with constructive interference, destructive interference and interference wave, here you can visit this great site

The next scribe will be..... I dont no
Crystal

Refraction

Sorry I'm late . Today I'll tell about what we studied on last Thursday (Refraction).
When a wave travels at an angle into a medium in which its speed is less, the refracted wave ray is bent (refracted) towards the normal. For example, when a wave ray travels from deep water to shallow water, the angle of refraction is smaller than the angle of incidence. And when a wave ray travel from shallow water to deep water, the angle of refraction is bigger than the angle of incidence. Don't forget to do the Worksheet 23 and exercises about refraction.

Friday's Class September 28

Hello fellow bloggers,

Sorry for being a couple days late as I had computer problems, but alas here I am with Fridays blog.

We started off class correcting questions 9-14 in the green booklet which was due Friday. If you missed them here they are:

9. Station A
10.200 meters
11.294 Hz
12.Orange
13 a.Red
13 b.Red
14. 400 meters

We also corrected the worksheet Refraction pg.31 up to question 4. Again if you were not at class, Ms. K has uploaded the answers to the blog. After that we received a worksheet called Interference Exercises and read pages 16-18 in the green booklet on interference.

And lastly we received a review for the upcoming test on Wednesday. (not 100% sure on the date) So remember to study hard and prepare for it. Also remember to ask any questions you have in class.

The next scribe will be...
Yonas

Refraction Worksheet

Refraction and Diffraction

Diffraction occurs when waves that are travelling in a straight line, change their direction by hitting another object. The wavefronts are bent around the object. The direction of a motion of the wavefront and indicate the wave ray drawn and the right angle. Refraction we will use in rays. When a wave travel in from one depth of water to another, there is a in change direction, and the refracted wave ray is bent (refracted) towards normal. The angle of incidence is shown between the normal and the incident wave ray.

And the work that we did today was correcting the Exercise of Refraction and the Refraction and in class time we did the Transparency worksheet.Next scribe is Lee

The Bending of Light Lab

Hey folks, its James here apparently I'm the class scribe for today. We'll jump right into it by saying today was a simple class. All day we worked on a lab on the bending of light (Pg.352 physics textbook), amazing isn't it. The lab itself was fairly straight forward, dealing with how light bends through water. Aside from the lab we didn't do much in the way of work, however we were given back our waves in two dimension assignment sheets.

The next scribe is...Nguyen

Reflection and Refraction

Today's class, we quickly went over the answers on our assignment nos. 5-8 on the 2nd green booklet. Then we spent almost all of our time watching the video of Reflection and Refraction. Ms. K gave us white sheet to answer while watching and went over it after watching.


Here are the answers for 5-8 on the green booklet:


5. λshallow= 1.1 cm


6. a. n= 1.33


b. Vdeep = 4 cm Vshallow = 3 cm


c. = 22°


7. angle of refraction= 36.9°


8. Vr = 5.6 km/s




...and for the answers on the white sheet of Reflection and refraction, just click the links below:


Waves in 2D: RnR

Waves in 2D: RnR2


tomorrow, tuesday Sept.25, is the due date for the Waves Research Project. Don't forget to hand it in.

the next scribe is.....Jamesa-

Snell's law

Oops, the bunny has disappeared, so I'll blog for today's class. Everyone needed to hand in Waves in 2D assignment 1. We covered the math for Snell's law and saw how the law was derived. The ratio of the wavelengths, speeds, and sines can give the value for the index of refraction, n. This value is just a ratio which means it doesn't have any units. The index of refraction, n, is specific for each type of material (water, glass).

The assignment for the weekend is to complete problems 5-8 at the end of the green booklet. If you're thinking you should realize that question #6 is a repeat of the question we did on the whiteboard.
Remember your 1 page assignment is due on Tuesday. Have a great weekend.
Oh yeah, the scribe for Monday will be
Jessica

Class of September 20, 2007.

Eyooo! It's Francis! Today in class we got our drawing rays exercise back along with our Waves in One Dimension Test which we corrected. After that we watched a video about waves and how they reflect off different barriers, it was quite interesting especially with all the funky shapes it made while getting reflected. We also went over pages 9, 10 and 11 in our green "Waves in Two Dimensions" booklet. So if you're stuck just check out those pages, its pretty much all we learned this class. That's my piece!
If I missed anything be sure to point it out.
I believe the next scribe will be bunny. Yuuup, it's bunny.

Physics Class - September 19, 2007.

Hello, my name is Tony and I am apart of your Physics class. I will be scribing for today.

Mrs. Kozoriz looked over and corrected the sheet in which we had to draw the wave ray's, and way front's. In prior to that, we read page 7 within the green booklet. (Grade 11 Physic Waves in Two Dimensions). Not much was done today.

Today in class, Mrs. Kozoriz handed out the following sheets :

1. Reflection of Circular Waves from a Straight Barrier.
2. Waves in Two Dimensions - Assignment 1.

Our homework is to complete the sheet Waves in Two Dimensions - Assignment 1 because it's due the following day.

The next scribe will be Francis.

Waves in 2D

Yeao!!! Lawrence here signing in. Sorry about it being so late but I had a football game and some other things going on within the family plus I had homework so yeah. Thanks for being so considerate Justus ¬__¬''

ANYWAYS, We started off class with a lovely test. Isn't that just dandy.

Then, we received a second booklet entitled: " Waves in Two Dimensions'' and we practically looked at circular waves, which can be generated on the surface of a liquid by a point source such as a drop of water, or a drop of any kind of object for example, your finger. Also, we learned that if a crest or trough is continuous, it's referred to as a wavefront. To show how the wave is traveling, we just simply create an arrow at right angles to the wavefront, in which this line is called the wave ray.

*Pictures can be located in your booklets on the back of the first page.*

Next, we looked at reflections. To put it simply, the wave ray is bounced back at exactly the same angle it hit the barrier, so if it hits the barrier straight on, it'll reflect straight back, thus, if it hits a barrier at a forty-five degree angle, it'll bounce off the barrier at a forty-five degree angle, in which we can presume the angle of incidence is equal to the angle of reflection.

*Angle of Incidence is the angle between the incident wavefront and the barrier while the angle of reflection is the angle between the reflected wavefront and the barrier.*

It'll look a little something like this :

I think that about does it, and I know its late but just to let you know, we have that paper due next Tuesday as well as homework.

Also, the Next scribe shall be...

...
...
...
Vieteran... Whatever that means...
*cough* Tony *cough*

I say Good day. Ciao