The Week of October 12th

This week we continued our study on refraction and reflection in preparation for a science test.We made rubrics for ray and wave diagrams so in the future we know how to make them. That is a good reason for why we need to know this in life. Tests are a part of life. To get back to science we also had a science carnival where we went to different stations and observed things. Some stations included a drawing that we had to describe while other stations gave us scenarios that we had to analyze and decide which person in the scenario was right.
This week we also learned about how the eye works. To explain this i would tell you light bounces off an object and goes in every direction including the eye. But the rays that hit the bottom of the object only have room to go into the top of the pupil and the rays from the top of the object only have room to get into the bottom of the pupil. This almost directly compares with the flame turning upisdedown. Anyway once the rays go into your eye they cross eachother therefore displaying the object upsidedown in your eyes. But fortunately the brain flips the image displaying it rightside up.
Finally i learned about the densitys of certain objects. Glass is the most dense object. Water has medium density and air has the least density. When light travels from a less dense to more dense object is bends or refracts towards the normal line, but when it goes from a more dense to a less dense object it bends away from the normal line. In concluison that is what we did this week.

Why its important(continuation of october 5th)

These theories are important because to become a scientist you must know these to compare when you have experiments or observations of light. Also this comes in handy or it is important as a student. On tests and during discussions these theories can become good to elaborate on.

The Week Of October 5th

This week we learned about light and how it travels through water. First we looked at a ruler submerged in a cup of water. At the point of where the ruler hit the water the ruler seemed to expand in width. My group and I predicted this was because the glass/water magnified the ruler. We then put a ruler in a large, flat basin. It almost looked like the water was making the ruler bend. Later on i learned this was called refraction which means when light bends as it hits water or glass.
We also learned about two seperate hypotheseis about light. Isaac Newton believed that light travels in particles which when was tested soon proved to be wrong. Huygens believed that light travels in waves which is what we are testing currently in class. We believe that when light is about to go in water it is going fast and when light hits the water it refracts and goes slower. Then when its goes past the glass or water it starts to go at a fast speed again in the same angle it was going before it hit the water.

The Week of Sepetember 27

This week we continued our studies on light and laser pointers. We created an experiment using a laser and a protractor to test if you point a laser at a certain angle will it bounce off in that direct angle. For more information about this experiemnt you could see my lab report that is due on moday Ocotober 5th. Mr. Finley taught us that the angle that you point the laser at is called the laser of incidence and the angle it bounces of of is called the angle of reflection. The angle of incidence is the independent variable and the angle of reflection is the dependent variable.
This week we also learned about light particles or Photon particles. These particles make up light. We also made hypothesis of what happens when light hits off water. Besides that we came up with 5 descriptions of particles. These descriptions include that they are fast, they bounce off objects, they bounce off things congruently, light is made up of them, and they bounce in spread directions when they hit a rough surface. That concludes this weeks blog.

The Week of September 21

This week we extended our researches on light. We learned that a flame is reflected upside down because theres only enough room for the top to go through the bottom part and the bottom to go through the top part of the hole in the cardboard. I also learned how a camera works. The flash of the camera hits the object and bounces back into the lense and it is saved into the hard drive or memory of the camera.
In the second part of the week we examined a laser pointer hitting a mirror and bouncing back onto the wall. We determined that either surfaces have different reflectiveness or that the laser pointer hits off the mirror in a straight direction onto the wall. Our experiments for these hypothesis' include shining the laser light on different objects to see how bright or how big the light is on the surface. That concludes last weeks science classes.

The Week of the September 14th

This Week in Mr. Finley's class i learned many new ideas about light. I learned these ideas by testing many experiments. One of the biggest experiments about light we had was the dark room experiment. My hypothesis was that in a dark room our eyes would adjust to having no light in 5 minutes. Our experiment was we went under Mr. Finleys desk in the complete darkness. After 5 minutes if you could see what the sign on the wall said your hypothesis would be right. My prediction was after 4 or 5 minutes i would be able to see the sign. When i did my experiment i could see nothing. My conclusion was that you cant see in the dark because when you see, the pupils expand in your eyes to bring in light and without light this cant happpen. It is important to know this idea so if you decide to go somewhere or do something at night you wont hurt yourself. We also learned about light rays,but we are not completely finished with that experiment.
Later in the week we also learned about laser pointers. We learned that a laser pointer flows in a straight beam until it hits a solid object. We are all able to see the dot because the dot hits onto the wall and bounces in many directions into our eyes. This concept is also the same with light rays. To end my post we learned that the laser pointer travels in a straight beam by clapping flour with chalk earsers by the beam showing the beams fullness. This works because flower particles are opaque enough for the beam to bounce off of into our eyes. THE END