Reeves,+Holly

This article was basically discussing the risks associated with cell phones and the radioactive waves they produce. One thing I wasn’t aware of was the difference between wavelengths. I didn’t know that the shorter the waves were, the more dangerous they were to humans. I also didn’t know the waves that cell phones give off raise the temperature of skin. Even though the increase is slight, it is a big concern for scientists. Lastly I didn’t know that cell phones do not create enough energy to detach electrons from their atoms. Something I was aware of was that cell phones can be dangerous to humans because of the radiation they omit. I also knew that cell phones can be linked brain and skin cancer. Another thing I knew was that cell phones are being used by younger generations and possibly effecting healthy growth.

Holly, Looks good! You picked out some interesting points from this article! 5 stars. MW

I didn’t know that as a mixture crude oil is useless. To make it into something that can be used everyday they must distill it. However I did know the process in which you distill things because of the demo we did in class with the blue crystals and water. I found the fractional distillation pretty interesting because they all came out a slightly different color.

Holly,

A little short (approx 60 words). 4 stars. MW

One thing I knew before reading the article was that some animals such as snakes and bats have sensors that use waves to located possible prey and obstacles. I also knew that one type of motion detector relies on a light beam because my garage door also uses this technology. Another thing I knew before was that Einsten received the Nobel Prize for his work in photoelectric. Something I wasn’t aware of was the fact that there are so many different types of motion detectors. I also learned that our eyes work similarly to a motion detector. Lastly I didn’t know that detectors were able to only detect warm blooded things like humans and animals.

Holly, OK. Looks good! 5 stars. MW