On the 14.11.10 the 6B science class had a magic show. Me and my partner,(Abby) preformed two tricks. One tricks was called the candle blow-off and the second one, we called, the scared pepper. For the first magic trick, we needed; candles, vinegar, baking soda, a jar, two plates and a lighter to light up the candles. We preformed this experiment on the left side of the table. We had the jar ready, the candles on the plates and the baking soda just next to us.First, we poured some vinegar into the jar and then some baking soda, when we did this, we had to place our hand gently on the openings so the carbon dioxide wouldn't come out since in the jar, both chemicals were "fighting against each other to get out." When we counted up to ten, we took our hands off and started getting closer to the candles until they eventually went off and no liquid came out. The kids that were watching were very amazed. So after all, the candles went off because all the carbon dioxide(gas) came out of the opening forcing the heat to get smaller and disappear. We practiced this experiment about 3 times before we performed it, but on two candles it didn't work for the last time we did it. But however, the kids still enjoyed it because they got to blow the candles. When we did this experiment, I think we did pretty well entertaining the kids because we would make them do everything with us, we would ask them questions, make them smell some things, make them guess some substances and so on. The candle blow-off experiment was successful.
Our second magic trick, was to do with simply; water,pepper and soap. But before we could show the kids anything, in a separate big bowl we had to get some clean water with soap and towels so when they touch the pepper it wouldn't hurt them. What we did in this experiment, was that we had 4 bowls with fresh water on the front of the table, and 1 for me right next to me and my partner. We would pour some pepper into the first bowl and make he kids put their finger in to see if something would happen, and then we would ask them what they thought was the yellow liquid. Some kids though: lemon juice, olive oil or liquid from the sun! Well, then we put some soap on their fingers and they put their fingers in one at a time, and saw what happened. The disadvantage in this experiment though, was that we had to refill the jars with fresh water because we only had 4 and because some times it didn't work because there already was water, that took up a lot of time. But how ever, also here, we entertained the kids by showing them what would happen and why, and if they like pepper and stuff that was included.
Some of the kids were very enthusiastic for example, some would look at us with a smile and always answer, or tell us some really cool stories. Some would enjoy just listening to us and doing the job their selves. On the other hand, some looked very bored, they would just nod with their head sometimes and just look away when they didn't feel like listening anymore. Either ways, all of them were very kind and tried their best to listen...
If we should ever have this magic show again, I think we could preform one by one, so that everyone sees every ones. I really though it was well-done however. Big thanx to Mrs.Medenica that organized this for us.
Tuesday, December 14, 2010
Monday, December 13, 2010
GAS
In class, we were looking at different types of solid liquids or gases, and how energy(taking or adding heat) affects them. I specifically looked at Neon,Argon,Oxygen and Water. Water, as we all know is a liquid. Oxygen, is a gas(also something we breathe.) As I observed all different changes, I found similarities and some differences.
When I tested the Neon, I first added heat and the particles went from together to spreading out and started moving. The movement was very different from the others, because the molecules started vibrating and then the edges started to flow off and suddenly everything.When I subcontracted heat, it looked as if the particles started joining and finally at 0 degrees it froze. Next was the Argon, when I added heat, the molecules moved much faster than in the Neon. Also, when I tested this one, first just some of the particles came of and the others traveled together but finally they went apart. On the other side, when I cooled the Argon, all the particles came together but slowly and formed a shape that again, froze at 0 degrees. Next, was the Oxygen. When I heated that, it took a longer while then others to let go of each other, but then they started moving really fays. ( The particles)When I cooled it, they would wiggle and as the others, stop. Last, was the Water. When water gets heated, it lets the particles go and they move around like crazy, really fast. Finally, by cooling water, the molecules get close and stop wiggling, this makes fro example ice.
After all, all the substance, froze when they were cooling at one point and all of them had free particles while they were heated. So, no matter if it is a solid, liquid or gas, they can be similar and help us learn.
Don't think it is over yet, we had a second part to the experiment. In the second part, the bowl we worked with, had a thermometer, a finger holding down a lid, and a pump where you could add more molecules. I worked with the same substances. For Neon, I did a simple way, I didn't really work with the finger and the adder but I made the temperature be about 60 degrees and then I pushed the lid down, and the pressure was about 150. After, the lid blew up.When I cooled the Neon, I could push the lid as much as I wanted until I reached the substance and then eventually it blew up. When I tried this with Argon, i went to about 119 degrees and I could push the lid about 1/5 more than half. Then, I made the temperature be 0degrees and I added about 31 particles and the temperature became about 8. In all of them though, when I started pushing, the particles started moving faster like they were in a hurry. Before last, I tried it out with Oxygen. The temperature was about 160 and the lid was able to go down about 1/5 of the cup. For the cold part, I added 5 pumps, and they molecules joined, they touched and then I touched it with the lid and finally BOM! Last, Water. my high temperature I choose was 392 degrees and I added about 3 pumps with particles. The water was the most resistant to the pressure. When I pushed the lid down. the particles went up and down until they went sailing up and the lid came off. For the cooling, my temperature was 0 degrees and I added 6 pumps of particles. It blew up when I touched it and so on....
So, now we are here, the end, I learned that pressure and gas can be pretty similar but have different potentials!
If you are interested, you can go visit:
http://phet.colorado.edu/en/simulation/states-of-matter
When I tested the Neon, I first added heat and the particles went from together to spreading out and started moving. The movement was very different from the others, because the molecules started vibrating and then the edges started to flow off and suddenly everything.When I subcontracted heat, it looked as if the particles started joining and finally at 0 degrees it froze. Next was the Argon, when I added heat, the molecules moved much faster than in the Neon. Also, when I tested this one, first just some of the particles came of and the others traveled together but finally they went apart. On the other side, when I cooled the Argon, all the particles came together but slowly and formed a shape that again, froze at 0 degrees. Next, was the Oxygen. When I heated that, it took a longer while then others to let go of each other, but then they started moving really fays. ( The particles)When I cooled it, they would wiggle and as the others, stop. Last, was the Water. When water gets heated, it lets the particles go and they move around like crazy, really fast. Finally, by cooling water, the molecules get close and stop wiggling, this makes fro example ice.
After all, all the substance, froze when they were cooling at one point and all of them had free particles while they were heated. So, no matter if it is a solid, liquid or gas, they can be similar and help us learn.
Don't think it is over yet, we had a second part to the experiment. In the second part, the bowl we worked with, had a thermometer, a finger holding down a lid, and a pump where you could add more molecules. I worked with the same substances. For Neon, I did a simple way, I didn't really work with the finger and the adder but I made the temperature be about 60 degrees and then I pushed the lid down, and the pressure was about 150. After, the lid blew up.When I cooled the Neon, I could push the lid as much as I wanted until I reached the substance and then eventually it blew up. When I tried this with Argon, i went to about 119 degrees and I could push the lid about 1/5 more than half. Then, I made the temperature be 0degrees and I added about 31 particles and the temperature became about 8. In all of them though, when I started pushing, the particles started moving faster like they were in a hurry. Before last, I tried it out with Oxygen. The temperature was about 160 and the lid was able to go down about 1/5 of the cup. For the cold part, I added 5 pumps, and they molecules joined, they touched and then I touched it with the lid and finally BOM! Last, Water. my high temperature I choose was 392 degrees and I added about 3 pumps with particles. The water was the most resistant to the pressure. When I pushed the lid down. the particles went up and down until they went sailing up and the lid came off. For the cooling, my temperature was 0 degrees and I added 6 pumps of particles. It blew up when I touched it and so on....
So, now we are here, the end, I learned that pressure and gas can be pretty similar but have different potentials!
If you are interested, you can go visit:
http://phet.colorado.edu/en/simulation/states-of-matter
Tuesday, December 7, 2010
Night of the Living Ants
Written:May,13,2009
Scientists from California,America, were investigating about animals and their daily life. They came across ants and found out that ants bury other ants that are dead. Also, that within one hour, the dead ants are taken away from the nest. Now scientists were asking them selves, how do ants know if the other ant is dead or not? It was one of the most interesting topics they had ever done. Dong-Hwan Choe, a biologist, lead the study.He studies about living things in the University of California, Riverside. The first thing he found out was that Argentine ants have a chemical on their bodies telling the other ants- "I'm dead." All the ants include this chemical. Some citizens think that the ants are like zombies since they can crawl around even if they are dead. How do the ants know if the other is only unconscious or is actually dead?(Was the next question the scientist came across) Well, Choe found out that ants posses a chemical telling- "Wait-I'm not dead yet." That's how ants are sure if they are alive. If an ant is unconscious, they leave it until it wakes up and don't move it. Choe also predicts that once an ant dies, the chemical saying: "I'm not dead yet" disappears. To see if he was right, he tested it on the ants and yes it was true. The other thing that scientist discovered was that ants are pretty much like humans because once someone dies, we bury him and so do the ants in a way. After all, the purpose of the study, was to learn more about animals life and the cycle of ants.
As I read the article, the facts didn't really connect to what we are studying now in class, and even though the article was posted in 2009, I though it would be a cool discovery to post and make others read about. I choose to read about this article because now, I found out that we as humans, are very much like ants which is amazing since they are animals. Also, as I was reading, I though that the article was very interesting because it had a lot of supporting details and gave me a clear mind of what is going on in an ants world. I never really enjoyed learning about ants because I think they can be disgusting, but reading about this, opened a new window in my mind. I am pretty sure that this article came from a reliable site because all my other current events are also from that site and it is made for kids. So, if I should recommend this article to any one, I would recommend it to all the animal lovers that are interested in learning about a life cycle and all adventures that an ants goes through.
Word:
Scientists from California,America, were investigating about animals and their daily life. They came across ants and found out that ants bury other ants that are dead. Also, that within one hour, the dead ants are taken away from the nest. Now scientists were asking them selves, how do ants know if the other ant is dead or not? It was one of the most interesting topics they had ever done. Dong-Hwan Choe, a biologist, lead the study.He studies about living things in the University of California, Riverside. The first thing he found out was that Argentine ants have a chemical on their bodies telling the other ants- "I'm dead." All the ants include this chemical. Some citizens think that the ants are like zombies since they can crawl around even if they are dead. How do the ants know if the other is only unconscious or is actually dead?(Was the next question the scientist came across) Well, Choe found out that ants posses a chemical telling- "Wait-I'm not dead yet." That's how ants are sure if they are alive. If an ant is unconscious, they leave it until it wakes up and don't move it. Choe also predicts that once an ant dies, the chemical saying: "I'm not dead yet" disappears. To see if he was right, he tested it on the ants and yes it was true. The other thing that scientist discovered was that ants are pretty much like humans because once someone dies, we bury him and so do the ants in a way. After all, the purpose of the study, was to learn more about animals life and the cycle of ants.
As I read the article, the facts didn't really connect to what we are studying now in class, and even though the article was posted in 2009, I though it would be a cool discovery to post and make others read about. I choose to read about this article because now, I found out that we as humans, are very much like ants which is amazing since they are animals. Also, as I was reading, I though that the article was very interesting because it had a lot of supporting details and gave me a clear mind of what is going on in an ants world. I never really enjoyed learning about ants because I think they can be disgusting, but reading about this, opened a new window in my mind. I am pretty sure that this article came from a reliable site because all my other current events are also from that site and it is made for kids. So, if I should recommend this article to any one, I would recommend it to all the animal lovers that are interested in learning about a life cycle and all adventures that an ants goes through.
Word:
Hypothesis: A tentative explanation for an observation, phenomenon or scientific problem that can be tested by further investigation.
Chemical: A substance with a distinct molecular composition that is produced by or used in a chemical process.
Site:
http://www.sciencenewsforkids.org/articles/20090513/Note2.asp
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