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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

**spin-stabilized, fin-stabilized, and rocket assisted (both fin- and spin-stabilized). Most guns today use a spin-stabilized projectile. The spin-stabilized projectile spins and that makes the bullet more stable. The fin-stabilized projectile spins 20 revolutions a second. The rocket assisted projectile was made so it can extend the range over normal guns to let lighter mount and barrel design. It shows that different projectiles make the bullet do different things.**
 * Projectile motion is when something is pushed and it moves. There are different motions for a projectile. There are horizontal motion, vertical motion, and parabola motion. The horizontal motion goes straight like when you roll a ball on the table. The vertical motion goes straight down like when you drop down a ball. The perable motion is like when a soccer ball is kicked and i curves in the goal. The different motions can help for things like sports, military, and just science in general.**
 * Citation**
 * John, Pike . "Large Caliber Ammunition - Types of Projectiles." __Military__ . 03/1/2006. Global Security . 25 Aug 2007 .

Comment 1: Eric, you did a great job when you compared the soccer ball to your article. To improve your article, you might want to send your document through spell check first. Also you could add more detail to the second paragraph on how it relates to the class exercises. Overall, I loved your article. Great job! -David**

9/24/2007
Reflect upon the mystery density cube experiment. 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 scientific method was not nessessary in the experment. Science did not have that much to do with the experiment. In the experiment math was used more than science. The thing that made the experiment hard was that some of the cubes did not seem like any of the options on the list of posible matches. Besides that that was the hardest thing. The denstiy is the key to fine the identity of an unknown substance. With out knowing the density nobody would have been able to find the objects that easly.//

//Comment 1: You made a few careless mistakes on this, maybe next time read it over once and send it through spell check. I don't understand what you meant in your sentence, "Besides that that was the hardest thing." You might want to make it a bit more clear. I think you might be slightly contradictory with saying that you were able to find the objects easily and saying that it was hard to match the substances up. I personally disagree with the scientific method being unnecessary in the experiment, but your reasoning for your opinion was good. Your ideas were overall clear enough, and you followed the directions. Overall you did a pretty good job! -Sarah// Comment 2:

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 used to determine the identity of an unknown metal. It turns different colors depending on what element is getting heated.// It involves introducing a sample to a flame and observing the color that appears. What happends in fireworks is when the element is burned it gets turned different colors which makes fire works.

citations: Helminestine, Anne Marie. "Flame Test ." __Qualitative Analysis__. 2007. About.com. 16 Oct 2007 <[|http://chemistry.about.com/library/weekly/aa110401a.htm>.]

//Comment 1://

Comment 2:

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: When the sodium is droped in the clourine, the sodium makes a bond with the chlourine. When the sodium atoms touches the clourine atoms an ionic reaction happends. The reaction makes the sodium atoms give up one electron to give to both chlourine. When this happends the transfer causes heat to realese. The ionic compound formed by this reaction is a hard white substance called NaCl or better known as salt.//

//Comment 1:// Eric, you have a good length for your article and overall content but the spelling could use a little work. You have good and understandable detail in your article that is very thorough. The only thing I think you need to improve upon is the length of your entry and your spelling. I would give you an A- just because of the spelling. ~Sydney R

Comment 2:

Entry 2: When the sodium is dropped in to the sodium makes a bond with the chlorine. When the sodium atoms atoms touches the chlorine atoms an ionic reaction happens. The reaction makes the sodium atoms give up on electron to give to both chlorine atoms. When this happens the transfer causes heat to release. The ionic compound formed by this reaction is a hard white substance called NaCl or better known as table salt.

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 project this trimester was the chemical reactions. I thought it was really cool how the chemicals reacted when another chemical reacted with it. I also liked the flame test. I thought it was cool when you put a chemical and the fire turns a totally different color. This trimester I think I excelled in the projects that we did like the projectile motion and the podcasts. I could have improved in science 7 by studying more for quizzes and test. I think I wasn’t prepared for most of them.

//Comment 1: The second sentence is weird but the rest is really good besides the mispelled wording, studying, Aaron R.//

Comment 2: 12/18/2007

Our next unit is about electricity and electronics. In third 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, what kind of investigation would you carry out?

Entry: Electricity is what powers our homes. Electricity is used for cell phones, iPods, lighting, cooking, TV and much more. I would like to know more about how things are charged so quickly like iPods and cell phones. If I could investigate any subject area related to energy in the home I would like to learn more about how things are charged like our tablets or corydalis phones.

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1/3/2008
Our next unit is about electricity and electronics. Observe the following graph, Graph 1 and write an analytical paragraph describing what it means. Make sure to address what trends are observed; how things change over time, etc. Write at least five sentences for 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.]

Entry:

Entry: The sources of electricity in the United States of America are coal, petroleum and natural gas, nuclear electric power, and hydroelectric power. The energy source in the US that increased the greatest amount is coal. Graph 1 shows that from 1949 to 2006 coal goes from 0.1 trillion kilowatt hours to 2.0 trillion kilowatt hours. This is 1.9 trillion kilowatt hours in 57 years. From the graph coal directly contribute to global warming. Coal is a fossil fuel. When fossil fuels are burned they give of a gas called CO2 which affects the ozone layer and causes global warming. Also when you dig up coal it digs up methane that also affects the ozone layer. Here is the citation of for this information "Causes ." __Global Warming__ March 2000 January 4, 2008 <[|http://library.thinkquest.org/J003411/causes.htm>.] On graph 1 the trends from 1972- 1985 was that the coal had much more kilowatt hours than petroleum, natural gas, nuclear electric power, and hydroelectric power. The energy sources besides coal where all lower than 0.5 trillion kilowatt hours. Also around the year 1983 the four had about the same kilowatt hours. On graph 1 it also shows a steady increase for coal.

Comment 1: Eric, Your third paragraph is not up to the standards because it does not have enough information in it. The minimum number of sentences that you are supposes to have is five and you only have four with one of the sentences being something just to take up space. You did do some really good things too though. You wrote in third person, you referred directly to the graph, you used direct reference data, and you backed up your statements with actual data. Good job! You did all the scientific writing style correctly! You did not follow the blog prompt correctly because the question was what happened in between 1972-1985. You did not explain the overall trend between the two dates. You did do a good job providing evidence for your ideas but you could have done a little better job of referring back to the question more. One of your sentences does not make complete sense. “Also around the year 1983 the four had about the same kilowatt hours”. In your first sentence you mentioned five sources, now there are four? You should also put the exact date and kilowatt hours not just about. Your data is good, but you just didn’t answer the question as well as you could have. You need to add a lot more information about in between the two dates. Other than this, good job.

-Alex M

Comment 2: You had very good third person, and you had no spelling mistakes. The only grammar mistake that I could see is that it says ‘On graph one’; it should be ‘In graph one’. Also it needs to be five sentences, you only have four. The question asks for the overall trends from 1972- 1985, and you commented mostly on the trends of coal. You also directly referenced data from the graph once; to be a little bit better you could reference the data every time you comment about a trend. Your thoughts on the data make sense and all your comments are appropriate. - Adrienne B-K

Comment 3: "On graph 1 the trends from 1972- 1985 was that REWORD the coal had much more UNITS kilowatt hours than petroleum, natural gas, nuclear electric power, and hydroelectric power HOW MUCH MORE. The energy sources besides coal where all lower than 0.5 trillion kilowatt hours. Also around the year 1983 the four had about the same kilowatt hours HOW MANY. On graph 1 it also shows a steady increase for coal DATA. CONCLUDING SENTENCE. - JT

1/8/2008
Please read the paragraph below about energy use to create electricity from 1972-1985 in the US. Observe that the graph is referred to, there is an introductory statement, supporting statements are backed up with data, and that their is a concluding sentence. This would have been a well written paragraph for question 3 in our previous blog entry.

"As seen in Graph 1, there were four sources of electricity production in the US from 1972-1985. These sources were coal, petroleum/natural gas, nuclear electric power, and hydroelectric power. From 1972-1985, the US needed greater and greater production of electricity from these combined resources. This best example of this is that during these years, coal increased from 0.5 trillion kilowatthours to roughly 1.5 trillion kilowatthours. During this same time period hydroelectric sources remained approximately the same at 0.3 trillion kilowatthours. There was a slight increase in nuclear electric power sources from 0.1 trillion kilowatthours to 0.3 trillion kilowatthours during this same time period. Finally, petroleum and natural gas showed the greatest amount of fluctuation during this time period staying about the same from 1972-1980 at 0.4 trillion kilowatthours but then deceasing to 0.3 trillion kilowattthours by 1985. Thus, although greater and greater amounts of resources were needed to produce electricity during this time period, coal accounted for the greatest increase in use." - JT

//**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: The changes WHEN in electricity production are nuclear electric power and hydroelectric power. The changes occur FROM 2000-2005. As seen in graph 1 nuclear electric power was at its highest point in 2000-2005. In 2000 was a little above 0.5 trillion kilowatt hours. Later on it went steadily down and then steadily up DATA. In 2005 it ended at the same as it was in 2000 DATA. For hydroelectric power graph 1 shows it goes up and down in the 2000-2005 time periods. In 2000 it was around 0.1 trillion kilowatt hours. In 2003 it starts to round out a bit more and it is around 0.2 UNITS and that’s where it stays till 2005. Electricity production sources from 2000-20005 was CHANGE IN TENSE not the best the numbers don’t compete with coal and even natural gas. Electricity production be up and down from the earily SP years of 1950 to 2005. WORK ON YOUR CONCLUDING SENTENCE. KEEP WORKING ON YOUR WRITING. - JT

//comments: The paragrph is pretty good. The only wrong thing I see about it is that the first two sentences don't really sound right. Also I really think you could elaborate on the last sentence. Overall it was good.//

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 in it burned for 24 hours straight (you forgot and left it turned on), how many kilowatt hours would it use? Make sure to writein 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 a unit that that measures power. To calculate a watt is by multiplying the current by the voltage. If a lamp with 200 watt light bulb burned for 24 hour straight it would equal 4.8 kilowatt hours. To find this answer, multiply 200 watts by 24. That equals 4800 watt hours. To get it to kilowatt hours divide 4800 watt hours by 1000. 4800 watt hours divided by 1000 equals 4.8 kilowatt hours. That’s the way to find how many kilowatt hours a 200 watt light bulb would use if it burned for 24 hours.

Comment 1: Good. It felt like it went by fast. you did not really put your heart into writing it. it was rushed. Overall, it was very good. -Joshua Kennedy

Comment 2: Good job on the content. However, you need to keep the article detailed and slowed down. Don't rush it too much. However, it was very good other than that.

Comment 3: Eric- You did understand how to answer the question, and you had sufficient detail. The only problem is that you didn't state the equation of W = I x V. Also, check some grammar, and example is your second sentence. Overall, a fine job! -Richard

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 in science was very fun and exciting. I learned about series circuit and parallel circuit. My favorite part was the Radio Shack Electric Kit. It was very hard at first but as time went on I could make a buzzer go on and off by the light. I also thought the household chemicals were fun too. Also when Aaron brought in his 2 foot snake was pretty cool. I did not think that a corn snake could get that big! The collaborative lab reports in the wiki where also fun. Working with people made the circuits much more fun and exciting.

Comment 1: I really enjoyed having you in my science class this year. I like how everyday I can walk into science and have somebody there to make me happy. You helped me a lot with the the labs. Thanks for always being there. -Brittany W.

Comment 2: