In class we are learning about air and arowdinamics. Part of this was that we had to build two leter bottle rockets. We had to learn about the proberties of air, fins, drag, and stream lining to take part of this activity. We could only use a two leter pop bottle. We were not soppuse to cut into the bottle, but yet some of did. That made the air be able to exscap from the bottle and made the bottle not be able to fly. We had to put fins on to.
For my rocket I took two two leter pop bottles and cot the top off of one of them. Then I taped it on bottom of the none cut bottle. I used eletrical tap because it is smoth so the ait will go over it esaly. Then I cut the top off of the cut side and put a funnel on it. I did that because now the air won't hit the plastic things. I tapped that in to. Next I hot glued and taped the fins on but they would not stay on ptobburly. Instead of doing that I cut into the bottle and then hot glued and tapped the fins on. That was a big mistake beause when we tried to lonch the rocket the air went through the glue and tap. I have learned from this activety more about the properties of air. 1 Air occupies space: This was proved by the air was in the bottle. We put air into the bottle which made the air take up that space. 2 Air exerts pressure: This was proved because we put lots of air into the bottle, more that the bottle usally holds. The air was being pushed in the bottle. 3 Air is a fluid: This experiment was proven because we put water in the inside of the rocket so the rocket would fly better. 4 Air can be compressed: This was proved because we put more air into the bottle but the bottle did not explod. once we pulled the pin the air was pushed out of the bottle. Aerodynamics: Streamlining - This means that you make an object (the rocket) more aerodynamic. You would reduce drag. By doing this your rocket will let the air flow around it easly. Drag - This is when air pushes an object the object way that it is moving. If you reduce drag you streamline the rocket. When you reduce drag you get rid of all of the places were the air will hit and slow down the rocket. Fins: Fins are not wings! Wings make that object fly and fins help the rocket flt. When your rocket is flying and it is going to go down back to the ground, the fins make the rocket go back down with out making the rocket spin. Fins help this because the air hights the fins which makes them push the rocket down and then it stops the rocket from dong a forwards roll.
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Today in class we learned about the 5th propertie of air. This is Air Can be Compressed. For this properties experiment was the Water Bottle lide Experiment. You filled up a plastic water bottle up with air and then twisted it. Once it was twisted, the air inside the bottle wanted to get out but the lid was on so it could not get out. The air was being compressed, but we keep the material the same. This experiment proves that air can be compressed because, we twist the bottle and the air did not come out. The air was being 'pushed' in the bottle. The other experiment was the flying bottle. In this experiment we took a two liter pop bottle and attach it to a bike pump. We pumped air into the bottle and the bottle flew. This proves that air can be compressed because the bottle got compressed with air and when it came of of the pomp all of the air in the bottle pushed out of the bottle.
The experiment that we did today was for Air is a Fluid. You take your air cannon and fill it up with water and put food coloring in it. You slowly take the cannon and lower it into the water. Then you slowly tip it, and then shot it. We had a small plastic cow and put it standing up and shot at it. This experiment proves that air is a fluid because the water to shape of the cup so it is a no fixed shape. The water in the cup has external pressure.
1. Air is Everywhere: This experiment proves the evidence of this property because, the air cannon shots air. The air inside the cup is getting pushed by the ballon when you pull it back. If there was no air inside the cup the cannon would not shot air.
2. Air Occupies Space: This experiment proves the evidence of this property because, when you pull back the ballon air has to fill in that space. When you release the balloon the air that was in the cup has to go to where the ballon was. The air pushes out of the cup and the hits the styrofoam cups causing them to fall down. 3. Air Exerts Pressure: This experiment proves the evidence of this property because, the balloon is pushing on the air inside the cup. When you let go, the ballon pushes all of the air out of the cup. Challenge question: Would this work under water? Explain I think that this would work because when you put the cup under the water, all of the air would come out of the cup. When you pull back you would just shot water. Today we did another experiment for air exerts pressure. It is called the garbage bag kid. You climbed into a garbage bag, sealed the end of the bag to our necks. Then you took a vacuum and put it in the bag. The vacuum sucked up all of the air and you could feel the atmospheric pressure. This experiment makes us feel how we would feel if we did not have air around us.
The third properties of air is air exerts space. One of the experiments that we did was the imploding can. This was, to fill a pop can with boiling water and then tip the pop can upside down on a pan with cold water and snow. The pop can scrunched to gather as soon as it touched the pan. This proves that air exerts pressure because, the can had steam in it. The steam gets cold and the can clabses. The second exspeirement was, to get a cup of water and put a paper at the lip. Flip the cup over and let go of the paper. This proves that air exerts peeress because, the air wants to get in the glass. The paper seals the lid so that air can not go in.
The second properties is air occupies space. One of the experiments is if you crumple up a piece of paper and put it in a cup. Then you get a bucket of water, and put the cups lip facing down. This proves that air occupies space because, if you pull the cup out. the paper is not wet. There was air in the cup when you pushed it down. The air could not go anywhere because there was water, so the air could not get out. Anther experiment was when you take jars and put plastic bags over it, one facing down and the other facing up. Tape on the jar and the plastic bag. If you try to push one bag down and the other up it will not work, because there has to be air that goes into that space that you are trying to get the plastic bag to. The air get not go anywhere, or fill in some space.
The first properties of air is air is every were. One of the experiments that we did is to blow up a balloon. This proves that air is every were because there is something in the balloon. You blew air in to the balloon. the air does not escape if you close it because if theirs nothing in there, there's air. Another one is if you fill a bag with air. It has the same reasoning as the balloon.
1. Briefly explain our assignment.
Mr. Hatch gave us an assignment today. We had to figure out a made up murder. Mr. Hatch split us into groups and gave us some clues. We were not aloud to show any body our clues and we were not aloud to write anything down. There were some questions that we had to find out. We had to go and tell Mr. Hatch our answers. If we got it wrong he would just say it was write. 2. What skills do you need in order to complete this activity? I think that the skills that you need to do this activity is good memory. Also you need to talk to your group, because you will not find the answers if you don't share your clues. 3. What do you feel was the greatest challenge when it came to completing this activity? The greatest challenge for this activity was to remember the answers when you had to go and tell them to Mr. Hatch. Also it was hard to not show your group your clues. 4. What one thing you feel would make this activity easier? Things that could make this activity easier could be if you could show the answers to your group and then write them down on paper. 5. How does this activity train you to become a better investigator? This activity trains you to be a better investigator because it helps you to communicate with people so if you have to tell people important information you can tell it to them clearly. An ecological footprint is how much land you would us to provide all we have and do ( garbage, food, etc.) If we had to equally split the earth up to every body, one person would have 0.4 acres. We did a survey on how much land we need in total for all our wants. This was my results: ecological footprint, 13.9. My carbon footprint was 27.3 co2. I would need about 7.3 earths. 3 things I could do to help can be to travel less to Red Deer. Also I could not use so much garbage items. Another thing is I could recycle less.
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