Tuesday, March 22, 2011
Hello Grade 7 and 8,
The first thing we did on Tuesday's class was talk about what will happen over the next two weeks. Here is a link to moodle so you can plan ahead. Also, we have a quiz on tuesday (March 29) about work, power, the math for work and power, and all the simple machines. After that, we began the remaining presentations on simple machines.
First up was Nathan and Jakub. Their powerpoint was about the Wheel
and Axle. I took some notes about the presentation so you can use this post
as a study guide. Here they are:
and Axle. I took some notes about the presentation so you can use this post
as a study guide. Here they are:
- The wheel and axle is a simple machine made of a large wheel secured to a smaller wheel which is called an axle
- It is a rod attached to a wheel and their movements are the same when one of the p
arts is turned - Some examples are: a doorknob, a steering wheel, fan, and a windmill
- It decreases distance and increases output force
- Mechanical Advantage= radius of wheel ÷ radius of axle
The next presentation was the pulley by Valentina and I. Here is some
information about pulleys:
Here is a link to a website on simple machines, it has a small quiz on it, so
you can prepare for next Tuesday's quiz, click here.
information about pulleys:
- There are three types of pulleys, Fixed, Movable, and Block and Tackle
- Mechanical advantage= length of input force/ length of output force
- Fixed pulley changes the direction of force
- Mechanical advantage=1
- Examples are fitness machines, flagpoles, and blinds
- Movable pulley decreases the amount of input force required
- Mechanical Advantage=2
- Common uses are in cranes or tow trucks
- Block and Tackle pulley is a combination of fixed and movable
- Its mechanical advantage=3
- Mechanical Advantage for this pulley relies on how many sections of rope there are
- Used to lift loads, fitness machines, and cable cars (gondolas)
The final presentation for Tuesday's class was the screw by Courtney
and Tamara. They had a powerpoint as well. Here are my notes from the
presentation:
and Tamara. They had a powerpoint as well. Here are my notes from the
presentation:
- A screw is an inclined plane wrapped around a cylinder
- Inclined plane forms the threads on a screw
- Types are countersunk, round head, raised head, coach screw & twinfast
- Names of screw heads are slotted, philips, and crossed slot
- Shank is the space between the head and the threads of the screw
- Core is the rod inside of the screw
- Mechanical advantage= length around threads ÷ length of screw
- Examples - jar, faucet, swirly slide, drill bit, screwdriver, boat propeller
- Increases distance of output force
That's it Tuesday's class. Emilija & Maria Chiara started their presentation, but
we ran out of time shortly after they started. On Thursday they will present,
along with David and Davide who haven't done their presentation yet. For
those who are presenting, remember to practice beforehand, know your
information, and be able to define it. I hope you enjoy reading my post.
we ran out of time shortly after they started. On Thursday they will present,
along with David and Davide who haven't done their presentation yet. For
those who are presenting, remember to practice beforehand, know your
information, and be able to define it. I hope you enjoy reading my post.
Here is a link to a website on simple machines, it has a small quiz on it, so
you can prepare for next Tuesday's quiz, click here.
THE SECOND TO LAST SCRIBE OF THE QUARTER IS......... DAVID!
Hi Ben,
ReplyDeleteThis is a nice post! I like your pictures and notes of the presentations! I also liked that you had links to Moodle and a prep quiz. The things you could have improved were mainly formatting the post; your text cuts off in the middle of a world and starts on a new line in some places. Some parts are also more indented than others. You also have your labels done wrong; you need to have "scribe post" as one of them. You have some minor capitalization mistakes. Other than that, nice job! :)
Hi Ben!
ReplyDeleteI liked your post. I think you did a good job with the notes and I liked that you put the pictures. They were very helpful. In one place it is a little bothering that the text is a different size. However I liked that you linked to moodle and the prep quiz is a very good idea. I think you did a really good job with your post.
Terez
Hey Ben!
ReplyDeleteI really liked your post! You added pictures, and you linked to both Moodle and your own website, which is good, however it might have been good to link to something else, such as a YouTube video. You had some gramatical mistakes, too. I liked the fact that you told us some things about the screw, pulley, and wheel and axel. I also thought it was neat that you told us the mechanical advantage formula for each of the simple machines that you studied in class. Also, one of your labels should have been "Scribe Post". Overall, though, this is a great post!
Hi Ben!
ReplyDeleteI think that this post was a very good summery of what your class did, and has been doing in science class. I really liked that the post is organized and has good pictures, although next time I would suggest you to pay attention to the font, because some parts were very small and hard to see. Some parts of the text were also hard to read, because of the bright color you used. You started out great with providing a link to moodle, and also gave good information to what the teams were presenting. I think it was good that you added important information about each simple machine. Next time, I would pay attention to the labels, because you labeled one thing wrong at the end. All in all, nice scribe post.
Hi Ben!
ReplyDeleteI liked your post a lot! I thought it was very nice that you put hyperlinks, for example to moodle at the start, but the color of the hyperlink is hard to see, so it would have been better to choose a different color. Also, it would have been nice if you had told us what were some of the things we discussed in class rather than just give the hyperlink because we explained them more. For example you should have described the meaning of work and power, so that we had some notes to study for the test also. I did like the pictures you chose to put. I think you could have added another hyperlink on work or power to help us understand. I thought you did very well on the rest of the science parts thought because you wrote all the notes there were to take on the presentations and you explained the mechanical advantage.
I did notice some writing errors, for example at the end you wrote "Emilija & Maria Chiara started their presentation, b
ut
we ran out of time shortly after they started." , this was really confusing because the word "but" was split in half and the rest of the sentence was on the next line.
Hi there Ben,
ReplyDeleteThis is a great post! Your notes about Tuesday were thorough and understandable. Your font was good, even though in some parts it became a bit smaller. You had little pictures, only three, nut they explained things well. You could have taken a picture or tow during class to show the people presenting. You have good spelling, even though you have some typos and you need to capitalize some sentences. As Viktor said, you should re-check it and look at the preview or change it with Ms.D, since, like in my post, your sentence is cut off on and continues below.
You also should change your labels, since you should have Scribe Post in there too. Overall, good post!
Davide
Hey Ben,
ReplyDeleteYour post is really good, the colors aren't hurting the viewer's eyes and the pictures are definitely helpful. One thing you could improve on though is making the links in a different color because they were rather hard to find. Another thing you should change is the way you typed the post because some words are cut off. Another thing you should be careful at is the tags, you were supposed to include a tag saying "Scribe Post". On the science part of the post I believe you have done everything good, and I liked that you put formulas and examples for each simple machine. Overall your post is really good.
Cip
Hey Ben!
ReplyDeleteFirst I generally like your style of organizing, and I like that you have used different colours, but those colours don't help to understand or organize. So I mean they are looking good but, but you don't use them for what they are suppose to be used for. Let's get to the science. I think your pictures are very good and help a lot, so I like that you have explained the science that the presenters have already explained, so that I could understand it too. I don't get the reason why you have put the introduction about Courtney's presentation in a smaller font, but that’s not a big deal. You only have one hyperlink and nothing else to other sources. But you have labeled your Blog well and used good grammar and spelling. The title might include a specific date. But I think your Blog was not the best but it was ok. :D
Val
Hey Ben,
ReplyDeleteOverall, your post is well-formatted and well written, it also included "correct science" throughout the post. First off, I liked the way you used color to differentiate different parts of your post (notes, homework, classwork, etc. However, your use of different fonts made the formatting a little less coherent. As to the actual writing of the post, you used scientific vocabulary correctly and often (countersunk, twinfast, etc). Your bullet points were also a good summary (as far as I can tell) of what went on during the class.
Ben - this is a nice improvement from your first post. You have covered all of the information we covered in class, but I do think your notes could have been more specific. Meaning - what is a definition of a pulley or what is Mechanical Advantage or why are all of these considered Simple Machines? I did like that you linked to a quiz to help others study for the quiz next week. And your pictures were helpful. Keep in mind they should be captioned. I know you had issues when posting, but the formatting is a bit confusing. Maybe in the future write what you want on Word and bring it in and post the whole thing on a Windows computer at school to avoid this issue. Finally, make sure your labels follow all of the requirements. Nice job with your spelling and grammar and overall I feel this was an informative and helpful post! ~Ms. D.
ReplyDelete