McAnnaney,+Katlyn

__**Can Cell Phones Radiation Damage Our Brains.**__

I knew three things from this article. One thing I knew was that cell phones gave off radiation. I also knew that it could cause brain damage to younger people compared to older people. The final thing I knew from this article when your ear is heated up from the phone, it is actually radiation. I also learned three things fro this article. I learned that the shorter the wavelength, the more energetic the wave is. Another thing I learned form this article is when ions are mixed with living cells, X rays and gamma rays, they can damage the DNA of cells. The final thing that I learned from this article is that not all cell phones give off the same amount of energy and is absorbed the same.

Katlyn, OK. Looks good. We will refine your knowledge on "radiation" this year. 5 stars. MW

__**Video Response**__

The one thing I didn't know was that crude oil is useless as a mixture. Fractional distillation shows how you can change the amount of oil was in each tube. This is relevant to our class because we did an experiment like this one in our class with the blue crystals in the water and the sand. What I found interesting was the chart. When you heat crude oil, it turns into diesel oil, kerosene, and gasoline (petrol). These are some of the things that happen when crude oil gets heated and chills.

Katlyn,

OK.Looks pretty good but check sentence structure. MW

__**Motion Detector**__ I learned in this article that when a motion detector goes off, it goes off because we push electrons around. This happens during electromagnetic radiation in ultraviolet, visible, and infrared range. Motion detectors rely on the current of electrons when they move. The one thing that I didn't really learn was when it said that electrons get ejected to produce photons which are light. In the article it said that Heinrich Hertz started the theory of photoelectric effect.

Katlyn, Sort of disjointed in your writing. Please follow the prompt and write about three things you knew and three things you learned 4 stars. MW