Thursday, May 21, 2015
It's sad to say 8th grade is coming to a end. However I have had a wonderful time in science. My favorite part about this year was probably all the labs. My favorite was probably the seismic shake table, marshmallow tower, and the lunar landing. My weakest part in science was probably the chapter about cells. It was very interesting but it was hard to comprehend. I really enjoyed using all the apps on the iPad like the paper app because of how We would draw all the things we were doing. My biggest failure in this class was the hot air balloon. It was one of my favorite things to do because it was difficult trying to figure out how to build a design to make it launch but our bottom base of our hot ballon was to heavy. Also it was so air tight and small that as soon as we put the air dryer in our ballon it completely blew a hole in one of the slides.I also really enjoyed the stone lab trip and I wish we would could do that's next year. Sad to see this year end so fast.
Thursday, April 23, 2015
I feel as is modern genetics apply to me or every human being in many ways. It first applies to me because I am a male. If you think about it genetics is what makes you who you are. It makes me unique. It makes me have the ears I have today, the eyes, mouth, hair color, and nose structure. Genetics even have to do with my blood. Depending on my genetics I might have A, B, Ab, Or O type blood in which there are good or bad advantages to having certain blood types. Not only genetics can effect me now but they can effect me in the future. Depending on my genetics and my future wife's genetics my son or daughter will have some of those genetics. The effects of the environment have also changed me today. They have changed some of my characteristics that I have. Thankfully my genes are normal. If my genes were not normal I could have genetic disorders such as cystic fibrosis or Down syndrome. Genetic engineering. It's a very important topic. I've actually been looking at this and now there are jobs on genetic engineering which think is very interesting. So this could determine my future. Did you know that most the food we eat today is considered a gmo. Which is a genetically modified organism.
Thursday, March 5, 2015
I don't know much about life science but I remember a few things from 6th grade and other classes. I still somewhat know stuff about the cell cycle. I also have quite a bit of knowledge in chromosomes, traits, and heredity. However, this chapter that we're getting into is very interesting to me. I am interested in genetic engineering. How scientists can change some type of cell, or organisms to be good or Bad such as our food we eat.
Wednesday, February 4, 2015
Newton was a very smart scientist who came up with three important laws. The 1st law states that an object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force. For example, if there is a box that is not in motion in will stay still unless you push it. Another example, is your house. It will stay in place unless less a natural disaster or the materials rot out.
Newtons 2nd law states, acceleration depends on the object's mass and on the net force acting on the object ( Force = mass x acceleration). For example, how much force does in take to throw a 3 kg toy accelerating 4 m/s. We'll (3 x 4 = 12 Newtons of force) Another example is how much force does it take to push a car that weighs 2000 kg accelerating at 12 m/s. 2000 x 12 = 24000 Newtons. My last example is, how much force does it take too pull a 18 kg box accelerating at 2.5 m/s. 45.0 Newtons.
Newtons 3rd law states that if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object. For example, if you throw a bouncy ball against a solid floor then the force going downward then travels upward once the ball hits the ground and transfer the force back up. Another example is, when you bounce on a trampoline the force your bringing you downward launches you back up in to the air once you hit the surface. My last example is, when you are on a pogo stick the force when you hit the ground travels through the pogo stick and flings you back up.