Friday, October 21, 2011
chicken wing dissection
In class we dissected a chicken wing. A chicken wing first is covered with skin which we cut off. Next was the muscle which is muscle tissue. The muscle has a biceps and triceps just like humans. Next was the bone which we were able to crack. Inside the bone marrow was where blood vessels. In conclusion, a chicken wing is like a human's arm. That was a fun lab!
Thursday, October 13, 2011
Diffusion Lab Project report
In the science lab, a key term that all scientist use is diffusion. Diffusion is making a substance, like a strong chemical, less concentrated. During this process molecules are able to find more space to spread out into. In addition, the strength of a chemical also tells the concentration of a chemical as well. The concentration of a chemical is the strength of the substance. A key element that supports diffusion is water. Water makes chemicals more diluted therefore the chemical is not as powerful. Dilution is another way to make a chemical less concentrated. The water is able to make the chemical less concentrated because of osmosis. Osmosis is the movement of water molecules. For example, in a lab when a scientist is mixing iodine and water together that is osmosis. A project that all these key terms are used in is the corn starch and iodine project. The scientists left the bag of corn starch in a beaker filled with iodine and water for fifteen minutes. The result or when you know the reaction is complete is the indicator. For example, if the substance stays or changes from different colors that is the indication that the reaction is done. Lastly, the scientist also noticed that the iodine was more stronger than many chemicals. A substance that is stronger than others is a hypertonic. In this lab the bag used to hold the corn starch is the hypotonic because the bag is weaker than the corn starch. Finally, a substance that is isotonic is equally as strong as the other substances. Going on more about this project, scientist had many purposes and prediction for the project. The purpose for this project is to see what happens when you mix corn starch and iodine together. The prediction for this project was that the corn starch or iodine would change color. However, were these scientist prediction correct?
The result of the project was that the corn starch turned purple while the iodine became a little lighter. This happened because of the permeable membrane. The permeable membrane allowed the small iodine molecules to go through the bag and into the corn starch. The iodine was able to go through the bag because the water was able to make the iodine less concentrated so which allowed the iodine to go through the bag. This is like the cell membrane. The cell membrane controls movement in and out of the cell which is just like the bag. However, instead of iodine, the cell membrane lets food and water molecules in. If the cell membrane did not let the food and water molecules through our body would not be able to get protein, energy, and nutrients which would mess up our bodies. Therefore, it is important to learn the way of how our body works because if something goes wrong people will have a better understanding of how to fix it.
With this concept in people minds, society is able to think of other items that relate to the corn starch and iodine project. Firstly, is the Lysol disinfecting spay. When a person presses the button and layer of chemical mist form. The is like diffusion because the chemical is able to get out of a tight spot and spread out in a more open area. Secondly, is a water balloon. When a water balloon crashes into the ground and pops that is also like diffusion. The water is first concentrated into a balloon but then spreads out all over the place when it hit’s the ground and pops. Thirdly, is smoke in a chimney. When fire is burning smoke is released and the only place the smoke could go is up the chimney. This is like diffusion because the smoke is so conceal in a small area but when it reaches the sky it spreads out because there is more room for the smoke to go. Lastly, is iced tea. When making iced tea from a packet you have a very concentrated powder but when you put water on it becomes more diluted. This is an example of osmosis because water molecules are used to mix or make the powder less concentrated. In conclusion, diffusion and all those key terms aren’t just important in the lab but anywhere in the world. We need to know how our body works and we must understand that we use these concepts in out everyday lifestyle.
The result of the project was that the corn starch turned purple while the iodine became a little lighter. This happened because of the permeable membrane. The permeable membrane allowed the small iodine molecules to go through the bag and into the corn starch. The iodine was able to go through the bag because the water was able to make the iodine less concentrated so which allowed the iodine to go through the bag. This is like the cell membrane. The cell membrane controls movement in and out of the cell which is just like the bag. However, instead of iodine, the cell membrane lets food and water molecules in. If the cell membrane did not let the food and water molecules through our body would not be able to get protein, energy, and nutrients which would mess up our bodies. Therefore, it is important to learn the way of how our body works because if something goes wrong people will have a better understanding of how to fix it.
With this concept in people minds, society is able to think of other items that relate to the corn starch and iodine project. Firstly, is the Lysol disinfecting spay. When a person presses the button and layer of chemical mist form. The is like diffusion because the chemical is able to get out of a tight spot and spread out in a more open area. Secondly, is a water balloon. When a water balloon crashes into the ground and pops that is also like diffusion. The water is first concentrated into a balloon but then spreads out all over the place when it hit’s the ground and pops. Thirdly, is smoke in a chimney. When fire is burning smoke is released and the only place the smoke could go is up the chimney. This is like diffusion because the smoke is so conceal in a small area but when it reaches the sky it spreads out because there is more room for the smoke to go. Lastly, is iced tea. When making iced tea from a packet you have a very concentrated powder but when you put water on it becomes more diluted. This is an example of osmosis because water molecules are used to mix or make the powder less concentrated. In conclusion, diffusion and all those key terms aren’t just important in the lab but anywhere in the world. We need to know how our body works and we must understand that we use these concepts in out everyday lifestyle.
Tuesday, October 11, 2011
Diffusion Lab: corn starch and iodine
Today in class we did a lab with corn starch and iodine. We putted a sealed bag of corn starch into a cup of water and iodine. We put water in the iodine to diluted the chemical so it will be less concentrated. We wait 15 minutes after we put the bad of corn starch in to see the results.
Before:
The solution in beaker was brown and the solution in the bag was white
After:
The solution in the beaker was dark orange like iced tea and the solution in the bag was purple.
This happen because the iodine molecules were so small they were able to go through the bag. This
is like a cell membrane. A cell membrane controls entry in and out of the cell like food and water molecules.
In the iodine case, the bag is letting iodine molecules through
I like this ab a lot because we were able to learn more about the cell with cool examples.
By : The awesome WHITEKNIGHT83
Before:
The solution in beaker was brown and the solution in the bag was white
After:
The solution in the beaker was dark orange like iced tea and the solution in the bag was purple.
This happen because the iodine molecules were so small they were able to go through the bag. This
is like a cell membrane. A cell membrane controls entry in and out of the cell like food and water molecules.
In the iodine case, the bag is letting iodine molecules through
I like this ab a lot because we were able to learn more about the cell with cool examples.
By : The awesome WHITEKNIGHT83
Monday, May 23, 2011
SSSSLLLLEEEEEEEPPPPP!(thats say sleep)
A big crisis in many teenagers life is trying to get enough sleep. Without enough sleep kids fall asleep in school and don;t get to learn that much. Studies show that when you are a baby you should get around 12 to 18 hours of sleep. When you are toddler you should get 12 to 14 hours of sleep. Also, when you age 4 to 10 you should get around 10 hours of sleep. However everything changes when you are a teenager. Teenager get around 6 to 7 hours of sleep. Teenager only get this amount of sleep for many reasons. A regular teenager usual time to sleep is around 11pm or later. Most because of watching tv. Some other common reason is communicating with others through things like texting. With a lack of sleep kids are not able to perform at the best of their abilities. No good grade, sport, or social life. Thats is why it is so important to get a lot of sleep.
SOURCE: http://www.nytimes.com/2011/05/24/health/24brody.html?_r=1&ref=science
SOURCE: http://www.nytimes.com/2011/05/24/health/24brody.html?_r=1&ref=science
Monday, May 16, 2011
Nintendo 3DS
First the nintendo ds, then the nintendo ds lite. Next came the nintendo Dsi and then the Nintendo Xl. Everyday, Nintendo working there hardest think of new ideas for the game loving fans. In March, Nintendo released its new idea into the world. The Nintendo 3DS. But what makes this device different from all the rest?
But its name you could pretty much tell that the 3DS has a 3d feature. However, it more features. Firstly, the top screen has increased in size and graphics. Secondly, this thing has a double side camera. Now the Dsi had this too but with the 3DS you get a better graphic piture. Next the thickness of the 3ds has improved. Now the top screen has more support and to make it better is still has its small size so you could fit it in your pocket. However, this device is still very fragile and vulnerable so be careful.
Next is the gameplay itself. For everyone buying a 3ds also means buying game. One of the new features on the 3ds is the Mii feature from the Wii. There are many games for the 3ds and its you are able able to play your old ds game in it. One of the new features in the 3ds for gameplay is the thumb pad. At first sit it looks very loose but believe me its on there tight. .
Another of the new features is the 3d camera. On the 3ds there are two cameras. on for regular pictures and one for 3d pictures. With the new improve graphics the camera program allows you to change up, combine, or draw on any picture you take. Lastly, with these pictures you could make you mii with them or use them in games.
Lastly, is the overall performance of the device. It has a 2.5hr battery pack for 3d mode and 5 hr battery pack for regular mode. The overall hardrive speed has increased and the A, B, X, and Y buttons has been upgrade into a more stiff buttons. The Wi-fi range has increased making it easier to get internet connection for online play.
In conclusion, The 3ds is an amazing step for the nintendo company and many are more encourage and waiting anxiously for their next creation.
Source: http://gear.ign.com/articles/115/1155978p1.html
But its name you could pretty much tell that the 3DS has a 3d feature. However, it more features. Firstly, the top screen has increased in size and graphics. Secondly, this thing has a double side camera. Now the Dsi had this too but with the 3DS you get a better graphic piture. Next the thickness of the 3ds has improved. Now the top screen has more support and to make it better is still has its small size so you could fit it in your pocket. However, this device is still very fragile and vulnerable so be careful.
Next is the gameplay itself. For everyone buying a 3ds also means buying game. One of the new features on the 3ds is the Mii feature from the Wii. There are many games for the 3ds and its you are able able to play your old ds game in it. One of the new features in the 3ds for gameplay is the thumb pad. At first sit it looks very loose but believe me its on there tight. .
Another of the new features is the 3d camera. On the 3ds there are two cameras. on for regular pictures and one for 3d pictures. With the new improve graphics the camera program allows you to change up, combine, or draw on any picture you take. Lastly, with these pictures you could make you mii with them or use them in games.
Lastly, is the overall performance of the device. It has a 2.5hr battery pack for 3d mode and 5 hr battery pack for regular mode. The overall hardrive speed has increased and the A, B, X, and Y buttons has been upgrade into a more stiff buttons. The Wi-fi range has increased making it easier to get internet connection for online play.
In conclusion, The 3ds is an amazing step for the nintendo company and many are more encourage and waiting anxiously for their next creation.
 |
| The 3ds by nintendo Credit IGN |
Source: http://gear.ign.com/articles/115/1155978p1.html
Saturday, April 2, 2011
Thursday, February 10, 2011
Toothpick Fish!
In science class we have began our toothpick fish project. We had to randomly pick and form pairs of fish alleles and the color of the fish were based on those alleles. Fish in our pond had four possible trait color which were green, red, yellow, and orange. Green was dominant (G) to red (r) and yellow (y) however red and yellow (ry) were incomplete therefore the color of the fish who had those genotype would be orange. In addition, that meant that yellow and red were recessive to green. Recessive means the traits are there but it is not shown. Dominant is the exact opposite. Dominant traits show their appearances. A fish would be green if their genotype was "GG, Gy," or "Gy". A fish would be yellow if their genotype was "yy" and the genotype for red fish would be "rr"
Genotypes of fish Key
Genotype Green = G
Color Yellow = y
Green GG Gr Gy Red = r
Red rr
Yellow yy
Orange ry
Also, when we pulled the fish alleles pairs out we organized them into four generations based on when the fish were created. The first generation started of with twelve(12) fish but in the second generation the population lowered to nine(9) because the yellow fish were unable to adapt to their surroundings therefore they died sooner than others. Adaptation is how an organism interacts with their surrounding. Furthermore, the third and fourth generation of fish both also stayed at the population of nine because there was a less chance of yellow fish to be formed.
Here are the total number of each color offspring in each generation:
Result of Fish
Environment Generation Green Red Yellow Orange
Lots of First 7 2 3 0
seaweed Second 6 2 0 1
and Algae Third 7 1 0 1
everywhere Fourth 6 2 1 0
NO seaweed
or Algae Survivors 4 2 1 0
Throughout the four generation the main way the fish were able to survive were because there was a large amount of seaweed and algae. In addition, the green, red and orange fish were able to camouflage in with the algae therefore predators were not able to find them. However, that kept the yellow fish wide open in the environment open to all the hungry predators which decreased the yellow fish population. But what would happen if a disaster happened in the pond and all green fish died because they were unable to adapt.
Rocks and soil have entered the pond therefore hiding the yellow, red, and orange fish however exposing the green. Therefore, the green fish died which again lowered the population. The population has now lowered to seven. With the green fish gone we have declared our survivors. Also the disappearance of green fish also effected the way of life in the pond. Without the green fish the population will increase greatly because now most of the fish in the pond will be yellow, red or orange since there are not many green alleles left.
Q: What would happen if the population of red fish and alleles completely disappeared due to another natural disaster and the green fish were still exposed to the predators
A: If the red fish and alleles completely disappeared than the only two color fish would be green and yellow. Therefore, when the green fish are created they would be most likely eaten and the whole population of green fish would be gone.
In conclusion, the fish population decreased from the first generation to the last due to the change in the pond habitat. Some colored fish were not able to adapt therefore they were not able to survive.
Genotypes of fish Key
Genotype Green = G
Color Yellow = y
Green GG Gr Gy Red = r
Red rr
Yellow yy
Orange ry
Also, when we pulled the fish alleles pairs out we organized them into four generations based on when the fish were created. The first generation started of with twelve(12) fish but in the second generation the population lowered to nine(9) because the yellow fish were unable to adapt to their surroundings therefore they died sooner than others. Adaptation is how an organism interacts with their surrounding. Furthermore, the third and fourth generation of fish both also stayed at the population of nine because there was a less chance of yellow fish to be formed.
Here are the total number of each color offspring in each generation:
Result of Fish
Environment Generation Green Red Yellow Orange
Lots of First 7 2 3 0
seaweed Second 6 2 0 1
and Algae Third 7 1 0 1
everywhere Fourth 6 2 1 0
NO seaweed
or Algae Survivors 4 2 1 0
Throughout the four generation the main way the fish were able to survive were because there was a large amount of seaweed and algae. In addition, the green, red and orange fish were able to camouflage in with the algae therefore predators were not able to find them. However, that kept the yellow fish wide open in the environment open to all the hungry predators which decreased the yellow fish population. But what would happen if a disaster happened in the pond and all green fish died because they were unable to adapt.
Rocks and soil have entered the pond therefore hiding the yellow, red, and orange fish however exposing the green. Therefore, the green fish died which again lowered the population. The population has now lowered to seven. With the green fish gone we have declared our survivors. Also the disappearance of green fish also effected the way of life in the pond. Without the green fish the population will increase greatly because now most of the fish in the pond will be yellow, red or orange since there are not many green alleles left.
Q: What would happen if the population of red fish and alleles completely disappeared due to another natural disaster and the green fish were still exposed to the predators
A: If the red fish and alleles completely disappeared than the only two color fish would be green and yellow. Therefore, when the green fish are created they would be most likely eaten and the whole population of green fish would be gone.
In conclusion, the fish population decreased from the first generation to the last due to the change in the pond habitat. Some colored fish were not able to adapt therefore they were not able to survive.
Subscribe to:
Posts (Atom)