Rocket Lab

My partner, Palavi and I conducted an experiment in the rocket lab.  We learned a lot about gravitational potential energy and elastic potential energy.  Gravitational potential energy is the energy stored in an object as the result of its straight up position or height. The energy is stored as the outcome of the gravitational pull of the Earth for the object.  Elastic potential energy is the energy stored in the rubber band as the result of its stretching.  For example, when we stretched the rubber band two centimeters, (elastic potential energy), the height that the straw shot in the air was fourteen meters.  So to find the gravitational potential energy we used the formula mass x Gravitational acceleration x height.  We plugged in the numbers for the formula 2 kilo grams; being the weight of the straw, 9.81; the gravitational acceleration and 14 meters; being the height.  Al together the G.P.E was 28 millijoules.  The more elastic potential energy you have, the more gravitational potential energy you’ll have.  For example, when Palavi and I stretched the rubber band to 3 centimeter, the height was 32.3 meters high and the gravitational potential energy was 64.6 millijoules.    

                Palavi and I probably measured the height of our rocket wrong.  Because, when we stretched the rubber band back to 2 centimeters we got a height of 14 inches.  But when we stretched the rubber band back to 3 centimeters we got a height of 32.3 millijoules.  Palavi and I most likely measured the height of the rocket wrong.  To fix this problem we could start this lab over and accurately measure the height of the rocket once more.  Making sure our data is as authentic and realistic as possible.

Mocking Birds

Mocking birds can sing.

They are more precious than a ring.

Mocking Birds make you feel happy.

You can be certain they will never make you feel sappy.

They are music to your ears,

while you hear.

You know Mocking birds are treasures,

every time you need pleasure.

Tooth Pick Fish

Examining alleles of fishes can be very important when they are able to adapt to their surroundings by camouflage.  To begin off the first generation in the gene pool contained of two heterozygous pairs of green and red fish, two homozygous pairs of yellow fish, one homozygous red, four orange, and three homozygous green fish.  When all these fish mated they produced offspring equaling to 58.3% green, 16.6% red, 16.6% yellow, and 8.3% orange.  Since the yellow fish could not adapt to the gene pool, they died going in the morgue, which decreased the population by 16.6%.  During the second generation of offspring there were 50% green, 20% red, 0% yellow, and 30% orange.  Then during the third generation the total color of offspring was 60% green, 20% red, 10% yellow, and 10% orange.  And lastly, the fourth generation contained of 55.5% green fish, 33.3% red fish, 0 yellow fish and lastly 11.1% orange fish.  As you can see all the colored fishes have decreased except for the green fish.  This happened because the green fish was dominant making its population increase.

During the fourth generation a huge disaster occurred.  Humans started littering the gene pool, causing the seaweed and algae to turn different colors.  Now that the seaweed and algae have changed colors the green fish are easily able to be seen and eaten by their predators, while on the other hand the red, yellow, and orange fish are able to camouflage by sand and rocks.  Now the only survivors are red fish and yellow fish.  There are 11.1% orange fish and 33.3% red fish remaining.  This disaster shows that by humans polluting the earth they can cause the dead of many organisms.  If the environment changed in any way, it could change the way fish live, by the fish adapting to the environment.  For example, if the littering human did to the gene pool destroyed seaweed and killed algae many fish could die including the green fish.  As you can see many fish adapt and survive by camouflaging while others easily spotted by their predators.   

Science Is Awesome!

On Saturday I went to an awesome science show.  There were many cool events the professors showed us.  For example, the first act he did was marvelous and spectacular.  For the first act David set his mother’s best china and vase filled with flowers on top of a green table cloth.  He tugged at the table cloth as fast as a wink and pulled it out of the table top.  None of the items that were listed above fell or broke, or even moved.  This happened because David moved the table cloth really fast.  He also did another act where he attached a glass apple to a string and swung it.  David didn’t move an Inch which, so when the glass apple came back toward David, he did not move so the apple did not hit him on the face.  I learned that if you swing an object back and forth it will be very repetitive, because it’ll start at the same point and end at the same point.  Another cool act that Mark did was, he used a vacuum cleaner to suck out all the air out of the garbage can.  The audience waited five minutes before Mark took out the vacuum cleaner or sucker, when a huge BOOM rang through the stadium and scared everyone half to death.  The BOOM rang because the air was sucked out, and without air the garbage basically died, yelling screams of his death.   If air was sucked out of a human, the human would do the same thing, and cry for help.  David was made to lie on a bunch of nails.  There were like 200 or more nails on a board that David lay on.  We were observing whether David would live or die.  He obviously lived.  What I learned from this act was that if you have 200 hundred nails and you way 200, the force will hurt you less because each nail will be a pound.  But if you have ten nails and you way 200, each nail now will way 20 pound which will hurt a whole lot.  Another event that was done was that, David had a few items which he placed in the nitrogen.  When he did so everything turned to ice.  For example he put a banana in the nitrogen, when it came out it was frozen solid.  David hit the banana and it broke into frozen pieces.  Now instead of being a regular banana it was a banana split.  Here I learned what nitrogen and hydrogen was. He also put a balloon into the nitrogen.  Now this was very exciting because I thought the balloon would either pop or turn to ice.  But what happened was that the balloon grew smaller and filled with air again so it flew up.  Another act that I saw was about sound.  He told us high sound was so powerful it could break glass.  Me, being so smart I already knew this.  So when a high pitched sound broke the glass I wasn’t surprised.  Mark also showed us when you put regular coke into a jug full of water the coke will sink.  But if you put diet soda into the same jar it will not sink.  That is because regular coke has corn syrup and diet soda has artificial sugar.  Apparently, Mark said diet soda had rat poison in it, so he basically ruined diet soda.  I will never be drinking it again in case it really has rat poison in it.  Anyway then Mark, added salt to the water and the regular coke came up and started floated like the diet soda.