Nugent,+Katie

I picked the article do you believe in atoms. I knew very little about atoms before I started. Some things I did know were that atoms were so small that they couldn’t be seen. Another thing I knew was that atoms made up everything around us, and that they could not be made or destroyed. Some of the things that I did learn were that the idea of atoms was introduced all the way back in 5th Century BC. Another thing I learned was that atoms are combined to form all different kinds of compounds. I also learned that chemicals can be separated combined and rearranged.

Katie, Not surprisingly we will spend quite a bit of time talking about atoms! :) 5 stars. MW

Distillation

I found it very interesting that something as simple as distillation in a large scale is used to create what we use to full our cars. I didn't know that there was a process behind how we get our oil. I just figured that it was there in nature, but like so may other things we have to pick it apart to get what we need. I am curious how long it took for someone to realize that they could use the different properties to separate things from each other. I found it interesting that you can do the same thing that they do on a large scale in a large scale to meet the demands of it. I didn't know chemistry was apart of so many things.

Katie, Good! It looks like you see how important separating mixtures can be. 5 stars. MW

Motion detectors

Some things I knew about the motion detectors were that there are many different types that do different things. Another thing I knew was that light is electromagnetic radiation. I also knew that the eye was a kind of photo sensor. But there were also many things that I did not know from this article. I did not know that when light of certain energy is shined of a certain object it causes electrons to be ejected. I also did not know that in some cases light behaves like a wave and in others it behaves more like a particle. I had no idea that a high frequency red beam could not send electrons flying yet a low frequency blue light could.

Katie, That's actually high intensity red light vs low intensity blue light. Frequency is another matter - blue always has higher frequency than red. MW