Newton Laws Assessment

1. What are the relationships between forces and motion? 
The relationship between forces and motion is that force creates movement. Force is like when something is pushed and when something is pushed with a good amount of force then it will move. Like if there is a tennis ball on the ground, and you kick it, then it will move. The force from your foot hitting the ball made it roll away from you. 2. What are the variables that affect motion and force? 
A variable that affect motion and force can be either on earth or in space. On earth if you push something, it will eventually stop due to friction and object that lie on earth. In space, if you push something than it will keep going. It may bounce off things but it will keep going. 3. How does Newton’s three laws describe the motion of a moving 
object? 
The first law says that when a object is put into motion then it will tend to stay in motion. That says that when something is put into motion then it will stay in motion. The second law describes motion with net force and mass of an object which effects how far an object can move. Newtons third law describes the reaction from the main reaction. So the after effect. 4. How does gravity impact objects?
Gravity can cause friction which can cause something to slow down over time, but if there is no gravity, then it will keep going. It may hit other objects but it will stay in motion because it will bounce off other objects. With gravity, an object will eventually stop and become still until it is pushed again.

Metal car lab

In Physical science this week we did a lab that has to do with force, acceleration, and mass. We were given a metal car and a set of weights spanning from 5g to 1000g. We then set up a wood runway for the metal care to go down. Each time we made the metal car go down the ramp, we would time it, and each time we would put a heavier weight. We used a back pack to make the slope a slant and we used a binder to make the car stop. I really enjoyed this lab, I think it was a fun way to see how weight may affect a car on a hill and it gives me a better understanding of what weight really does.

Museum of Science Field Trip

This Thursday, our physical science class took a field trip to the Museum of Science in Boston Massachusetts. There were a lot of great presentations that had a lot of science involved. 

Fantastic Forces: This was the first presentation we saw on our field trip. The presenter was demonstrating a lot of friction and force experiments. The first thing she did was put a glass with no water on top of a table cloth and she then quickly pulled the cloth out from under the glass. She then put water in the glass and it made it more difficult. Then she put a plate on top of the glass and then a plate, and then repeated the last action and pulled the cloth out from under. It looked really difficult but she did it. She then shot a pencil through a rather thick piece of plywood using a long tube, and pressure from a fire extinguisher. Lastly she demonstrated how the Newtons Cradle worked. The Newtons Cradle is a set of five large balls. When one pick up one of the end balls, and let it go, it will cause the opposite side ball go up. Its a good example of how force works. 

Bob Sled Activity: We did an activity which involved the students to make a little plastic bob sled. You can use any cloth and batteries to help with weight. It was a good demonstration to how friction works. If you use too many batteries then it will be too heavy and wont go too fast. If you use none, then it will also go slow. It also depended on the type of cloth you used on the bottom. You want the smoothest possible for the greatest speed.

Lightning Show: The class also saw an amazing lightning show. It was really fascinating to see how the man can make music using static and bolts. Two boys also came up and the man used electric magnets to put the two handles together, and the two boys could not split the metal apart. He played a lot of music, like the star wars theme song using the lightning bolts. He used different metals and shaped to make higher or lower pitched shocks. It was really cool and I recommend that show to everyone. 

Archimedean Excogitation Audiokinetic Sculpture: This was a really cool sculpture we saw on the trip. It was a repeated trail that a ball would follow the way down all the obstacles and then the crane would bring the ball back to the start. There was a lot of moving parts involved and it was flawless. It did the same thing every time with no mistakes. The ball would go down a Ferris wheel and then go on another trail and do all sorts of stuff. I could only imagine how long it took to make that sculpture. 

This field trip was really fun and I feel like I learned  a lot and i really recommend this field trip to any science class, because the museum has a section for everything.  

Chemistry of life

Chemistry of life consists of oxygen, carbon, hydrogen, and nitrogen. 

Oxygen and nitrogen makes up about 60 percent of the body weight. 

Carbohydrates is the source of living things. Breakdown of sugars supply mediate energy for cell activities.

Lipids are made up from glycerol combined with fatty acid. 

Proteins contains C,H,O, plus nitrogen. They are made by amino acids joining together

Chemical Reactions

This week were doing chemical reactions. First we put steel wool over fire and it burned and broke away. That was a single decomposition. We also put a steel nail into a cup of copper chloride and the nail turned a reddish color. Some of the stuff we did was pretty cool. I really enjoyed doing these hands on experiments.

Salt & sugar lab

This week, we did a lab which involved salt, sugar, and fire. First we would get some sugar and salt and put them in separate cups. We then got test tubes to put the sugar in. We then put the test tube over the Bunsen burner with the sugar in it. The sugar melted and turned into a dark liquid. We then put salt into a test tube and then put that over the fire, and nothing happened. So it explains that sugar can be melted and salt cannot.

Periodic table graph trend

Lately we have been learning about the periodic table. This week we were to plot the periodic table on a line graph. There are a few periodic groups and every one have a certain level if we were to line graph it. When I observe the graph we made, i see that the line on the graph is constantly going up and down the graph. The lowest level on the graph is 60, and there are 38 dots on the graph representing the substances that are on the periodic table. The reason why the trend of the graph is so wild is because it changes so frequently because of the electron affinity, ionization energy, atomic radius,and ionic radius. That is why each group is so different on the graph.