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8/24/2007
Find an web article from a reputable news website that contains information about any type of projectile. The article must relate to some science topic this could include something having to do with the projectile of bullets or weapons but should not focus on killing! Write a short (1 paragraph) summary of the article and then describe how anything you have learned in the past week about projectile motion might relate to it (second short paragraph). Finish with a citation to the web article. Enter all of this under "Entry" below.

//Entry:// This article is about Specialised Imaging Ltd. making innovations to their cameras and having a meeting for visitors. The big development was on a high-performance camera called the Trajectory Tracker. This camera accurately tracks projectiles in flight with ease because of its sturdy, adjustable mount. It uses a computer system to follow the object precisely. This advanced camera allows observations to be made for over 100 meters. After recorded, it can playback in slow motion to get a perfect look at the projectile. This “next generation” camera seems to be a very precise one. This article relates to what we have been doing in class because it is about a camera that measures projectiles. We have been doing the experiment of measuring the distance of projectiles. This camera can get information of how the projectile flies through the air very precisely. It also talks about the 4 variables, height, angle, velocity, and gravity, which is just like the balloon game we played during class to see how each variable affected the flight of the projectile. Although it does not measure these variables, it can help us determine them by its slow motion playback.


 * "Specialised Imaging to Unveil Innovations in High-Speed Imaging." ||
 * || __Photonics Online__. 21 August 2007. 25 Aug 2007 ||

//Comment 1:// You have great paragraphs with good information. You didn't write in third person in the second paragraph, though. You said the word "we" a lot. Great job overall! -Courtney K.

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9/24/2007
Reflect upon the mystery density cube experiment. You may write in first person. Create a long paragraph addressing these questions: 1.) Was the scientific method necessary in this experiment? If not, why? If so, why? 2.) What made this experiment difficult? or was it easy? 3.) Is density very important in finding the identity of an unknown substance?

//Entry:// The experiment involving the unidentified cubes was very interesting. The scientific method was not necessary because all we needed to do was hypothesize what the cubes' identity was and then make a final guess. This experiment was fairly easy because all we did was find the density of each cube and what it was made of (e.g. metal, wood). Then, we matched the cubes with a possible material type on the list that had about the same density as the cube. Finding the density is the most important factor in determining an object's identity because density is very consistent in all materials.

//Comment 1:// Your paragraph is clear, concise, and to the point. You might want to elaborate on how density is consistent in all materials.Your paragraph is also a bit short. (Maybe you'll want to add what the experiment was before you start doing the experiment.) This blog has good grammar, and good spelling. Overall, it's a nice blog entry. Great job! -Christina K.

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__10/16/2007__
What is a flame test in your own words? How does this relate to the use of chemicals in fireworks? Make sure to include your MLA citations you may not use Wikipedia!

//Entry:// A flame test is a test used to determine what a chemical is. It is done by getting a wire that is clean and putting the chemical on it. The wire is held in a flame and a color will usually appear. Depending on what chemical is being used, the color will change. If the wire that is being used is not completely clean, other chemical's colors could appear in the fire as well. This will affect the experiment and will not give us information to decide what the chemical is. This test relates to fireworks because fireworks come in many colors. To make a certain color, the firework makers have to know what chemicals to put in it so when it is set on fire, it will come out as the colors they want.

__"Qualitative Analysis: Flame Test."__ About.com__. 2007. About, Inc.. 16 Oct 2007 &lt;[|http://chemistry.about.com/library/weekly/aa110401a.htm&gt;.]__

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11/1/2007
Go to this site: [|http://www.visionlearning.com/library/module_viewer.php?mid=55 .]Click on "Watch the Reaction with Sodium and Chlorine." In your own words and in third person, create a blog entry describing the reaction and explaining what is happening in terms of the bonding. Write a long paragraph. Explain in detail.

//Entry:// The sodium set on fire when it was dropped into the chlorine. There are two sodium atoms and two chlorine atoms. The sodium has one electron in its outer energy level, and chlorine has seven. Because sodium is a metal and chlorine is a non-metal, they bond ionically. Each sodium gives its outer electron to one of the chlorines so they both have a full outer energy level and become more stable. There are now two ionically bonded sodium chloride atoms. The sodium becomes a cation (positive), because it gave up electrons. The chlorine becomes a anion (negative), because it gained electrons.

//Comment 1:// Nice paragraph. I didn't see any grammer or spelling mistakes. The statment: "There are two sodium atoms and two chloine atoms," is kind of redundant. Overall a excelent blog entry. Colin

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11/08/2007
What was your favorite project, experiment or topic this trimester and why? (projectile motion, density cube experiment, podcasts, chemical reactions, flame tests, etc.) You can also comment about the snakes. What do you think that you excelled at this trimester? How could you have improved your performance in Science 7? (Make sure to check your spelling and grammar).

//Entry:// My favorite topic this trimester was the chemical reactions because the reactions were interesting. It took concentration to do it correct, and make sure everything worked well. Also, we found out how each chemical reacted with others. I excelled in memorizing the elements on the periodic table and learning about how they bond. I could have improved by reviewing in-class notes or the chemistry book so I made sure I understood everything.

//Comment 1:// Jared, I very much enjoyed working with you in science this trimester. It made the project very fun. -Joseph P

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12/18/2007
Our next unit is about electricity and electronics. In first person write a long paragraph about what you know about electricity and what questions you might like to have answered in our electricity unit. If you could investigate any subject area related to energy in the home, electricity, electronics, computers, etc. what would you like to research or investigate?

//Entry:// I know that electricity is important in our society. It is used very much in our every day lives: in computers, televisions, video games, lamps, etc. I only have a basic idea about how it works. Electric energy must be put through a conductor, which allows it to be used. Even though I know this, how is the electric energy made, and how is it kept in a certain area so it is safe and can be used? The main thing I would really like to learn would be how things such as televisions and computers get signals from the networks. It seems really complex, but I think it could be explained in a simple way. Lastly, I want to learn how the car companies are planning to make cars use much less gas, and instead, use electric energy.

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1/3/2008
Our next unit is about electricity and electronics. Observe the following graph, Graph 1. Write at least five sentences for each of the following questions. Write in third person. Directly cite data and identify the graph (1). 1.) Which electricity source in the US has increased the greatest amount over the time period shown in the graph? 2.) Which of the sources listed below directly contribute to global warming? Provide evidence and explain using the Internet (MLA citation). 3.) Describe the overall trends from 1972 to 1985 regarding the US's sources of electricity. __ [|This graph can also be seen at this LINK.]__

Here is an example statement: "Graph 1 shows that from 1960-1965 there was a steady increase in the use of coal as a source of electricity. It rose from roughly 0.2 trillion killwatthours to 0.5 kilowatthours__.__

Entry: 1. In Graph 1, all of the electricity sources do increase from 1949-2006. The one that has increased the most is coal. It has gone from about 0.2 trillion kilowatthours to 2.0 trillion kilowatthours. This is obviously a major increase, and will effect the US very much. 1.8 trillion kilowatthours is a large amount, and contributes much to global warming.

2. The main contributer to global warming is coal. This electricity source is 93% of the emissions from electric industry. Along with coal, natural gas does also contribute to global warming. Even so, coal has 80% more carbon dioxide than gas, making it the biggest problem for global warming. At this rate, the use of coal will continue to raise, and therefore, global warming will get worse and worse.

__Mirabile, Joe. "Causes of Global Warming."__ EcoBridge__. 4 Jan 2008 &lt;[|http://ecobridge.org/&gt;.]

3. Again, coal increased the most from 1972-1985, going from 0.75 trillion kilowatthours to 1.6 trillion kilowatthours. Hydroelectric power stayed on its very steady pace, and did not go up or down. Nuclear electric power started being used for the first time, and went up less than 0.1 trillion kilowatthours, to 0.4 trillion kilowatthours. Last, the usage of petroleum went down. In 1972 it was at 0.6 trillion kilowatthours, and in 1985 it was down to 0.4 trillion kilowatthours. At this time, the trends started changing greatly.

Comment 1: Good job on the blog. It is written in third person, but there are no references to the graph. Good job using specific data from the graph above. There was NO backup statements that give a reference to the graph that the data is correct. There is just a bunch of data listed with No graph references. Again, Good job! Nupur

Comment 2: Very good blog entry. You might want to include refrences to the graph, how much power hydroelectricity produced (like," Hydroelectric power stayed on its very steady pace, ranging between .3 and .1 trillion kilowatthours"), and a citation to the graph (if needed). Overall, still a very good blog entry. Colin

Comment 3: Good job on the blog it was written in third person, but there was no reference to the graph and you might want to back up your statements.but still good entry billy__

1/8/2008

 * //Using the above paragraph as a model, describe the changes in electricity production sources from 2000-2005. Make sure that you reference the graph (Graph 1). Make sure all statements are backed up with data. Make sure you have an introductory sentence and a concluding sentence that provide an overall summary/statement.//**

Entry: In the years 2000-2005, there were four main sources of electricity. These were coal, petroleum/natural gas, nuclear electric power, and hydroelectric power. As shown in Graph 1, coal was at its highest usage, at 1.8 trillion kilowatt-hours. In the next two years in dropped to 1.7 trillion kilowatt-hours, but by 2005, it was back up around1.85 trillion kilowatt-hours. Petroleum was around 0.6 trillion kilowatt-hours, as shown in Graph 1, and it continued its upward path, getting to 0.8 trillion kilowatt-hours in 2005. Nuclear electric power stayed at 0.65 trillion kilowatt-hours in this 5 year time-span. Hydroelectric power was still the least used electricity source in the US in 2000. It was only being used 0.3 trillion kilowatt-hours. In the next two years, it dropped to 0.2 trillion kilowatt-hours, but by the end of 2005, it was back up to 0.3 trillion kilowatt-hours. Overall, these four main sources did not change much from 2000-2005, but coal still proves to be the biggest product.

Comment 1: Overall, you wrote a very well and precisely written entry. You used correct grammar and spelling, and you correctly referenced the graph and data. You may want to compare some resources against each other and comment on that. Nice job, Jared. ~Christina

Comment 2:

Re-Entry: In the years 2000-2005, there were four main sources of electricity. These were coal, petroleum/natural gas, nuclear electric power, and hydroelectric power. As shown in Graph 1, coal was at its highest usage, at 1.8 trillion kilowatt-hours. In the next two years in dropped to 1.7 trillion kilowatt-hours, but by 2005, it was back up around1.85 trillion kilowatt-hours. Petroleum was around 0.6 trillion kilowatt-hours, as shown in Graph 1, and it continued its upward path, getting to 0.8 trillion kilowatt-hours in 2005. Nuclear electric power stayed at 0.65 trillion kilowatt-hours in this 5 year time-span. Hydroelectric power was still the least used electricity source in the US in 2000. It was only being used 0.3 trillion kilowatt-hours. In the next two years, it dropped to 0.2 trillion kilowatt-hours, but by the end of 2005, it was back up to 0.3 trillion kilowatt-hours. Coal, compared to all of the other electric sources, is used at least 1 trillion more kilowatt-hours than all of them in 2005. Overall, these four main sources did not change much from 2000-2005, but coal still proves to be the biggest product. WELL WRITTEN BLOG- JT

2/05/2008
What is a watt? How do you calculate the amount of electrical power that is used in a circuit? Finally, if a lamp with a 200 watt lightbulb burned for 24 hours straight (you forgot and left it turned on), how many kilowatt hours would it use? Make sure to write in complete sentences and in third person. Explain how you calculated the amount of kilowatt hours that would be used in the question above.

Entry: A watt is the measurement for electrical power. You calculate electrical power by using this equation: Power (W) = Current (I) * Voltage (V). If you left a 200 watt lightbulb burning for 24 hours straight, you have to find the answer in watt hours. To do so, you multiply 200*24, which would be 4800 watt hours. To put the answer in kilowatt hours, it must be divided by 1000, because kilo means 1000. When done so, the answer would be 4.8 kilowatt hours.

Comment 1: You did a very good job on writing this paper. All your spelling and grammar is correct. The part i liked the best was where you explained the equation for finding the kilowatt hours. You had a lot of information in that section of the paragraph. The only thing that is wrong with this paper is that the kilowatt hours equation is not written in third person.

Comment 2: Great job on the paragraph. Your spelling and grammer was perfect. The part when you described how you do the equation, you did an exceedingly good job on. Great Job!-Alex

Re-Entry: A watt is the measurement for electrical power. One can calculate electrical power by using this equation: Power (watts) = Current (amps) * Voltage (volts). If a person left a 200 watt lightbulb burning for 24 hours straight, one must find the answer in watt hours. To do so, you multiply 200*24, which would be 4800 watt hours. To put the answer in kilowatt hours, it must be divided by 1000, because kilo means 1000. When done so, the answer would be 4.8 kilowatt hours.

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2/28/2008
This trimester we started by finishing up our chemistry unit by doing an acid/base experiment. After this, we started our electricity/electronics unit in which we first made basic series and parallel circuits with buzzers, speakers, motors, and lights. We applied ohm's law to these experiments. Following this, we started working on the Radioshack Electronics Kits where we made complex circuits that had a variety of functions- blinking LEDs, screeching speakers, analog to digital converters, etc. The technology we used this trimester included the pH probes that we connected to our computers to get the pH of household chemicals, using the wiki to create an class test review sheet, the Radioshack Electronic Kits, and creating collaborative lab reports in the wiki for our electronics unit (instead of a formal lab report).

//__In this blog prompt, please write a paragraph long entry (5-6 sentences with a intro and concluding sentence) that addresses what you enjoyed during this trimester and what you have learned. You can also comment on what you would like to improve upon for next trimester or what was difficult for you. Feel free to comment on our snakes- Peppermint and Diablo if you would like to as well as the technology that you enjoyed this trimester. Please check your spelling and grammar as this blog entry may appear in your end of trimester comment. You may want to write it in Microsoft Word to check the spelling, etc. and then copy it in the blog.__//

Entry: This trimester, I have enjoyed and learned many things. The thing that I enjoyed most was working in groups on the circuits. All of us had to contribute our ideas and work together to get the circuit to work. Also, I liked doing the Radioshack Learning Lab. I learned a lot about how it is needed to be very specific when working with electricity. I hope to improve on contributing more to my group. Overall, trimester two has been excellent.

Comment 1: Jared, you have been a great partner to work with in the group activities. You knew a lot about science and were very helpful when we had a question about something science related. I am looking forward to the projects with you next trimester. -Joseph P.

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4/22/2008
Go to: [|The Tech Museum: Robotics]. Spend 10 minutes browsing the information and museum. Answer the following blog prompt in complete sentences and in third person. Create a full paragraph. If in the future machines have the ability to reason, be self-aware and have feelings, then what makes a human being a human being, and a robot a robot? Explain. Are there any kind of robots that shouldn't be created? Or that you wouldn't want to see created? Why?

Entry: Even if machines have the ability to reason, be self-aware, and have feelings, humans would still be able to have different personality traits than them like they could differ from other humans. Also, even if robots are always correct, a human could be more creative and come up with a new and better answer. Robots also mostly look alike, while humans are diverse. A type of robot that should definitely not be created is one that destroys things or kills people. This would cause many problems, and if they are used in wars, the human race could become extinct if they are destructive enough.

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