Monthly Archives: September 2015

Physics 9-30-15 Relative Motion, Jumping on Mars, and Kid on a Slide with a Water Gun

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PHYSICS – Wow, we finally made it to the end of chapter 3! Do you realize how much you’ve accomplished? Let’s take it all tomorrow and put it to practice!

How’d you do with relative motion “revisited”? You know, you’ve done this already. The only new part is the motion of objects in the same direction and opposite directions, relative to each other. Don’t forget, you’ll use what you learned about vector addition to work those “boat goes across a river” and “plane experiences a head wind” types of problems.

Here are the answers to tonight’s problems. You can do them!!! (Helps session?)

36) 4.11 m
37) 80 m; 210 m
43a) 10.1 m/s at 8.53° east of north; b) 48.8 m
44a) 14.1° north of west; b) 199 km/h
45) 7.5 min
46a) 23.2° upstream from straight across; b) 8.72 m/s across the river

Physics 9-30 Relative Motion, Jumping on Mars, and Kid on a Slide with a Water Gun from Tammy Skinner on Vimeo.

flickr photo by Richard Yuan

Chemistry 9-30-15 Law of Conservation of Mass Lab

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CHEMISTRY – Great job on the lab this week! So did you “see” the Law of Conservation of Mass the first time you did it? The second time? What was the difference?

Be sure and tell me about that in your conclusions. Also, give me details in your procedure. What did you do differently in the second lab and why do you think it worked?

Any other questions about writing the lab report? Be sure and include lab photos in your observations. And carefully follow the Conservation of Mass Lab Report information sheet.

The lab report is due by Thursday midnight. Save it as a PDF to your Google Drive shared folder AND turnitin.com. I’m thinking it also might be a good idea to review the Digital Lab Report manuscript form AND – did I mention, remember you must also follow the Conservation of Mass Lab Report Notes that are here on the website (lab tab above).


flickr photo by Ken Schwartz

Physics 9-29-15 Angular Projectile Problems

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PHYSICS – Great job today working through the monkey-hunter problem!

Do the problems make more sense now? Don’t give up on the next set! They are tough, but you can do it!

J. D. – I haven’t laughed so hard in a while. Quote for the week – “and that was just ‘a’.” Thank you!! 🙂

Physics 9-29-15 Angular Projectile Problems from Tammy Skinner on Vimeo.

flickr photo by Johnson Cameraface

Chemistry 9-28-15 Conservation of Mass & Energy

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CHEMISTRY – So how do you know if something is a chemical and change? Applications, applications! Make sure you can apply what you learned today. Ditto on the laws of conservation of mass and energy.

Good job on tracing the energy transformations from one form to another. Make sure you can apply all this on the test (and in life!). Did I mention that already?

Speaking of the law of conservation of mass – lab tomorrow! Come prepared!!

CHEMISTRY 9-25-13 Chemical Change & Energy from Tammy Skinner on Vimeo.

flickr photo by Roger Smith

Hon Chemistry 9-28-15 Classification of Matter

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HON CHEMISTRY: Happy Monday! Great job today on asking questions to classify matter! How are you doing on the examples of homogeneous and heterogeneous matter? Here’s a question to think about again, can you tell me three different types of homogeneous matter?

And no, this isn’t part of a moonshine still, but it is copper and I thought it looked kind of cool! Speaking of….why do you think they use copper coil in stills??

HON CHEMISTRY 9-29-14 Classification of Matter from Tammy Skinner on Vimeo.

flickr photo by cobalt123

Physics 9-28-15 Angular Projectile Motion

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PHYSICS – So we are finally putting it all together – angular projectile motion! Here’s the lesson from today – some homework discussion and then angular projectile motion.

The number one thing to remember – Never use the resultant velocity to do more than find the vertical and horizontal components! And vertical is vertical, horizontal is horizontal and don’t ever mix the two!

PHYSICS 9-30-14 Angular Projectile Motion from Tammy Skinner on Vimeo.

flickr photo by gpwarlow

All Chemistry – The Next Step for Graphing Exercise 2

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Did you successfully complete Step 1 of Graphing Ex. 2? This means you uploaded three parts to Google Drive – question answers, a scanned hand drawn graph, and an Excel Graph. If so, GOOD JOB!!

Now you are ready for Step 2 – making sure you correctly drew and formatted both of your graphs. To do this, check your last two graph grades on Edline:

  • If you don’t have a 35 for EITHER Graph 1 or 2, then you must correct any that are wrong and RE-SUBMIT the ENTIRE ASSIGNMENT – ALL THREE PARTS – questions and both graphs, to Google Drive only. If you do have a 35 on either (or both) graphs, then you are done with that graph (or both!).
  • TITLE – Add the word UPDATED and the DATE you re-submitted it at the end of the Save As title.
  • Due TUESDAY midnight, Sept. 29 – If you turned in the entire assignment on time, this is the deadline for no deductions.
  • After you re-submit your Graphing Ex. 2, I will check it again and hopefully change your grade. If your graphs are still incorrect, then you must continue to made changes and re-submit the ENTIRE ASSIGNMENT until it is completely correct.
  • Text or email me EVERY time you re-submit the assignment so that I will know to check it for you.
  • IMPORTANT: As we discussed in class, correctly completing both graphs on Graphing Exercise 2 is a requirement for the chemistry course. No grade will be given for the nine-weeks if the assignment is not completed correctly,

Physics 9-25-15 Horizontal Projectile Motion

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PHYSICS – Great job today – and applying stuff from the last chapter no less!

Just go slow and easy, talk yourself through what you are doing and ask if the formulas you are using are legit. You’ll master it in no time flat. Watch out for squirrels throwing nuts!

Physics 9-25-15 Horizontal Projectile Motion from Tammy Skinner on Vimeo.

flickr photo by RunnerJenny

All Chemistry – Science In the News

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How can chemistry – or science, technology, engineering, and mathematics be important to your everyday life? TONS of ways, and this year we’ll be using Science In the News to research just that!

Be sure of two IMPORTANT things:

  • Make sure you pick an article you find interesting and that you understand!!
  • Make sure you pick an article that you can use to answer the questions on the Science In the News sheet. If there are questions you cannot answer with the type of article you have – pick another article!!!

Chemistry 9-24-15 Properties & Changes

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CHEMISTRY: So how do you know if something is a physical or a chemical change? Applications, applications! Make sure you can apply what you learned today. Ditto on the law of conservation of mass.

UPDATE: Vodcast now has sound!

Good job on the Mass without a Balance Lab!! UPDATE- Lab report is due Monday midnight, submitted to Google Drive and Turnitin.com as a PDF.

The thLab: Candle Observation will be a great way to review properties and changes. You’ll write that one on notebook paper and turn it in in class on Monday. Have fun and don’t burn anything down!!

CHEMISTRY 9-25-14 Properties & Changes from Tammy Skinner on Vimeo.

flickr photo by ViaMoi