Today In class we started by getting back our corrected tests, and our Malaria case study homework notes. (after the delay caused by fire drill.)The next thing we did was went over the first part of our lab report. We learned how to correctly write the background, and compared it to a background of a real-life scientist. Next, we made sure that our hypotheses made sense, and was supported by the background. We made our hypothesis more detailed by answering these questions: Where? Why? and What did we learn? For example: My hypothesis is people have unsanitary hands because they cough on them and spread germs. My prediction would be When I test the finger scanner it should come up full of bacteria, because it was touched by many dirty germ filled hands. After, we made sure that we all knew what we were testing: Location. Lastly, we created a data table for our results.
NATALIE
Friday, October 22, 2010
Thursday, October 21, 2010
Swabbing Day!
Today in class we are going around the school trying to find were the most and least amount of bacteria is found. In my group, we think that the place to find the most bacteria is in the cafeteria on the finger scan. The second place were we think that we will find the most bacteria is in the Middle School Hallways on the ground. The two places that we think won't have a lot of bacteria is the nurses office and the ceiling in the middle school hallways.
After we got our bacteria on the petri dish, we put the petri dishes in the inubator. An incubator keeps things at a nice temperature so that they can grow. We put the bacteria in there because the incubator will help the bacteria grow and it will make it go faster. We also learned wat range of tolerance is. Range of tolerance is the maximum and minimum limits something needs to maintain to survive. An example of range of tolerance is the timberline on mountains. The timber line is the point on a mountain were trees can no longer survive.
After we got our bacteria on the petri dish, we put the petri dishes in the inubator. An incubator keeps things at a nice temperature so that they can grow. We put the bacteria in there because the incubator will help the bacteria grow and it will make it go faster. We also learned wat range of tolerance is. Range of tolerance is the maximum and minimum limits something needs to maintain to survive. An example of range of tolerance is the timberline on mountains. The timber line is the point on a mountain were trees can no longer survive.
Wednesday, October 20, 2010
October 20, 2010
Mr. Finley went around and checked that we did our homework; the places where we would find less and more bacteria and the video we took notes on. Louis Pasteur's one container grew bacteria because the broth was food for the bacteria. The bacteria grows once it starts feeding on the broth. The other one didn;t get any growth because the swan neck was not broke. Things were not just growing out of no where something had to go into it for it to be able to grow.
Areas with more contact have a more better chance of having a lot of bacteria on it.
Places in school with a lot of bacteria would include: door handle, and finger scan
Places in school with not a lot of bacteria would include: door handle when you come OUT of the bathroom.
A petridish is a round dish you can test things in.
An agar is a stubtance bacteria grows on.
We labled our petridish and put it into 4 differnt sections. We got a swab that is sterilized which means it is CLEAN.
Then we tested!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Areas with more contact have a more better chance of having a lot of bacteria on it.
Places in school with a lot of bacteria would include: door handle, and finger scan
Places in school with not a lot of bacteria would include: door handle when you come OUT of the bathroom.
A petridish is a round dish you can test things in.
An agar is a stubtance bacteria grows on.
We labled our petridish and put it into 4 differnt sections. We got a swab that is sterilized which means it is CLEAN.
Then we tested!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Friday, October 15, 2010
Period 4 Science- 10/15
Today in class, we read about Louis Pasteur. In the 1800s people believed that organisms could spontaneosly arise without parent organims.He tested that hypothesis. He was not the first to test this hypothesis. In 1668, Italian physican Francesco Redi proved that maggots were found on meat because the meat was left out for a few days and attracted flys. The flys layed eggs on the meat and they formed into maggots. After we read, we took the online quiz on the topic.
Next, we discussed where bacteria grows. We came up with a lot of things, such as tables, water fountains, and other places, too.
Next, we discussed where bacteria grows. We came up with a lot of things, such as tables, water fountains, and other places, too.
Thursday, October 14, 2010
Spontanious Generation
Today in class we talked about people in the 15oos-1800s and how they thought people got sick. We all said that back then they thought that bacteria, viruses, parasites,germs etc. just came out of no where, just magically appear and began to get you sick. For example if they left out meat for 4 days outside it will attracted flies which will lay eggs and then the eggs that the flies put in the meat become maggots. Then the maggots will have put bacteria, and germs on the meat. But back then they thought maggots spontaneously appeared out of the meat. But what really happens is that the flies laid the eggs on the meat,which then turn in to maggots. That's how it really happens, but back then they didn't know what to think.
We also talked a little bit about how fungus and chemicals can also get you vary sick. And that back then they didn't know about it so they didn't really wash there food vary well, and then that's when the fungi's starts to grow all over the food. As you eat the food with fungus on it you become to get sick and that's not good at all.
Another thing we did in class today was a little activate but sadly we didn't really start it, but most of my class mates began to read the article to begin the activate. The article was mostly about bacteria what i was talking about before about the maggots, flies, and meat and how it really happens.
We also talked a little bit about how fungus and chemicals can also get you vary sick. And that back then they didn't know about it so they didn't really wash there food vary well, and then that's when the fungi's starts to grow all over the food. As you eat the food with fungus on it you become to get sick and that's not good at all.
Another thing we did in class today was a little activate but sadly we didn't really start it, but most of my class mates began to read the article to begin the activate. The article was mostly about bacteria what i was talking about before about the maggots, flies, and meat and how it really happens.
Tuesday, October 12, 2010
Blog for October 12, 2010
Today in class we finished up our teaching for the different diseases. Here are some notes on the diseases.
Cholera: is a bacteria, effects mostly babies and children, can be fatal, causes dehydration, caused by unsanitary water, symptoms are diarrhea, vomiting, cramps, and fevers, "cure" (is a way to treat the disease, not stop it completely) is made with sugar, salt, and clean water
HIV/AIDS: Human Immunodeficiency Virus / Acquired Immune Deficiency Syndrome
Virus that affects your immune system, No cure for for HIV/AIDS as of 2010, AIDS shuts down the immune system so you can't fight any illnesses, if you get sick, you cannot fight the disease and you will die, these days they give you drugs to fight the disease. HIV leads to AIDS. No visible symptoms. Transmitted by blood and body fluids.
Smallpox: is a virus, no known cure, vaccine developed in 1796, can only be spread by direct contact, easy to diagnose because shows spots on skins, is easy to trace because of this, is not known to be spread by insects or animals, global campaign against it in 1967 by World Health Organization, vaccinated people exposed to the disease, they invented a special needle that could be used over and over again for vaccination, became first major disease to be wiped out completely.
Posted by Mark Van der Merwe
Cholera: is a bacteria, effects mostly babies and children, can be fatal, causes dehydration, caused by unsanitary water, symptoms are diarrhea, vomiting, cramps, and fevers, "cure" (is a way to treat the disease, not stop it completely) is made with sugar, salt, and clean water
HIV/AIDS: Human Immunodeficiency Virus / Acquired Immune Deficiency Syndrome
Virus that affects your immune system, No cure for for HIV/AIDS as of 2010, AIDS shuts down the immune system so you can't fight any illnesses, if you get sick, you cannot fight the disease and you will die, these days they give you drugs to fight the disease. HIV leads to AIDS. No visible symptoms. Transmitted by blood and body fluids.
Smallpox: is a virus, no known cure, vaccine developed in 1796, can only be spread by direct contact, easy to diagnose because shows spots on skins, is easy to trace because of this, is not known to be spread by insects or animals, global campaign against it in 1967 by World Health Organization, vaccinated people exposed to the disease, they invented a special needle that could be used over and over again for vaccination, became first major disease to be wiped out completely.
Posted by Mark Van der Merwe
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