This week when we did our cockroach experiment. I learned that scientific experiments can always change. I thought that I had a great procedure, but then my group decided to change some things. The cockroaches can also change your experiment if they do something unexpected.
I also learned that a small thing can change a lot. For example. If you put one of the cockaroaches in a box, and it crawls out everytime, then you would have to add that to your conclusion. You might also change your bug and start over again.
Friday, April 24, 2009
Wednesday, April 8, 2009
CCAAMMPP SSPPEEAARRSS!!
What does camp have to do with science? Well I can tell you some reasons.
First of, we learned about different types of waters. There are lotic waters and lintic waters. Lotic water means that the water moves like a lake. Lintic water means that the water stays still, like a lake. We found differnt oragnisms in the water too. If you catch organisms in the lotic water, you can't put them into the lintic water, because that is not their normal habitat.
The rock wall only had one thing that I know is science related. This is the pulleys on the top of the tower. When you pull on one side of the rope the other side goes up. The person climbing would be the weight. The pulley is a mechanical advantage.
On the nature walk we learned about the different rocks. Sedimentary rocks are rocks that are layered. Metamorphic rocks are rocks that have been aged. They have no layers. Igneous rocks are rocks that came from volcanoes. They have little holes in them. There was a big field of rocks there. They came here being pushed by glaciers.
Also on the nature walk, we learned about mas and fungi. Mas eats the food from the liken. Liken gather minerals. The get food from the Mas. Fungi get food from dead things. It is a decomposer.
First of, we learned about different types of waters. There are lotic waters and lintic waters. Lotic water means that the water moves like a lake. Lintic water means that the water stays still, like a lake. We found differnt oragnisms in the water too. If you catch organisms in the lotic water, you can't put them into the lintic water, because that is not their normal habitat.
The rock wall only had one thing that I know is science related. This is the pulleys on the top of the tower. When you pull on one side of the rope the other side goes up. The person climbing would be the weight. The pulley is a mechanical advantage.
On the nature walk we learned about the different rocks. Sedimentary rocks are rocks that are layered. Metamorphic rocks are rocks that have been aged. They have no layers. Igneous rocks are rocks that came from volcanoes. They have little holes in them. There was a big field of rocks there. They came here being pushed by glaciers.
Also on the nature walk, we learned about mas and fungi. Mas eats the food from the liken. Liken gather minerals. The get food from the Mas. Fungi get food from dead things. It is a decomposer.
Friday, April 3, 2009
Observations and Cockaroaches!!!!!!!!!!!!!!!!
monday- worked on project
tuesday-worked on project
On wednesday, we reviewed what an observation is. Below are examples of observations:
-What you see, hear, smell, feel, but not taste
-Notes, descriptions, words, and numbers(quantitative and qualitative)
-Emotion/behavior of what you are observing
-Patterns, changes, trends in order to draw conclusions later on
-To answer a question-come up with more questions
-Opinion-not frequently
-Drawing-by hand or taken by camera
-Macroscopic and Microscopic.
On wedenesday we also observered cockaroaches
They have six legs, they are fast, they run fast when touched, they have spikes on their butt, they stay still when they are covered by something, they have a hard exoskeleton but a softer chest, they can hang upside down, and have little pinchers on their mouth.
On thursday we had a test
On friday we observed the cockaroaches again
tuesday-worked on project
On wednesday, we reviewed what an observation is. Below are examples of observations:
-What you see, hear, smell, feel, but not taste
-Notes, descriptions, words, and numbers(quantitative and qualitative)
-Emotion/behavior of what you are observing
-Patterns, changes, trends in order to draw conclusions later on
-To answer a question-come up with more questions
-Opinion-not frequently
-Drawing-by hand or taken by camera
-Macroscopic and Microscopic.
On wedenesday we also observered cockaroaches
They have six legs, they are fast, they run fast when touched, they have spikes on their butt, they stay still when they are covered by something, they have a hard exoskeleton but a softer chest, they can hang upside down, and have little pinchers on their mouth.
On thursday we had a test
On friday we observed the cockaroaches again
Thursday, March 26, 2009
Bug week!
This week we worked on our bugs. We finish all of them. The last one was the F3. By the F3 three, the genotypes had about four different colors. When we finished, Mr. Finley picked some of us to read off all of the colors. The colors stood for each person that was in your bugs genes. Once you read off all of the colors, you could then see who is in your bugs' family. This shows how all of the genes are passed down. This could help with genetic variety because you can see how many different people are in your genes.
This week we also worked on our science projects.
This week we also worked on our science projects.
Genetic Variety
Genetic Veriety played a very important role when creating my Reebop family. Without genetic variety, every body would look the same. This is because of genotypes. Genotypes is what gives people their hair color, eye color, and every other trait. For example, when I mated my bug with an other bug, we had to match there genes for the eyes, antenas, legs, wings, and dots. If the genotypes for the antenas were the same, then the antenas would be the same. Most of the time, every part of the two bugs had genetic variety. Then the phenotypes(physical traits) will be different. The two bugs in the picture are the parents of my F1. My F1 is in the picture next to them. Do you see how it looks different from them? That is because of genetic variety. It still has some of their traits.
Friday, March 6, 2009
SSCCIIEENNCCEE
On Monday we had a snow day!!!!
On Tuesday we made a chart of the 7th grade science class traits. Then we used the results to show what traits are dominant and recessive. For example, being able to taste a PTC taster would be a dominant trait. It only takes one dominant alleles to be dominant. For home work we had to answer if you could tell that somebody is heterozygous by a trait. You can't tell because you would have to see the alleles.
On Wednesday we went over our charts and figured out what traits are recessive and what traits aren't.
On Thursday we took our egg and sperm cells that we made for home work. We put traits on them and then put them in a cup. This was to prepare for our lab on Friday. It was to support our predicted punett squares. We would pull out an egg and sperm and match the traits four times. Then we compare the results to our original punett squares.
On Friday, we did the lab that I explained. My groups expected punett squares matched our results. Then we tried one trait again and I did not match.
I think that we did this because we needed to see how traits get passed on from generation to generation.
On Tuesday we made a chart of the 7th grade science class traits. Then we used the results to show what traits are dominant and recessive. For example, being able to taste a PTC taster would be a dominant trait. It only takes one dominant alleles to be dominant. For home work we had to answer if you could tell that somebody is heterozygous by a trait. You can't tell because you would have to see the alleles.
On Wednesday we went over our charts and figured out what traits are recessive and what traits aren't.
On Thursday we took our egg and sperm cells that we made for home work. We put traits on them and then put them in a cup. This was to prepare for our lab on Friday. It was to support our predicted punett squares. We would pull out an egg and sperm and match the traits four times. Then we compare the results to our original punett squares.
On Friday, we did the lab that I explained. My groups expected punett squares matched our results. Then we tried one trait again and I did not match.
I think that we did this because we needed to see how traits get passed on from generation to generation.
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