Patel,+Dilina

One thing I knew before reading this article was that mineral make up is all natural. After reading, I learned that this was not true and that some parts of it is synthetic. Another thing I knew before reading the article was that the mineral make up is very popular because it hide imperfections really well. Another thing I knew before reading this article is that you can buy mineral make up in drugstores at incredibly great prices! Something I just learned from this article is that mineral make-up has been on the market since 1998. I thought that it has only been out the last couple of years. The last thing I learned was that mineral make up has talc and mica in it. In earth science we had classfiy different rocks and its minerals. I noticed that talc and mica are quite chalky.
 * Article response:**

Dilina, Good post and good connections to prior learning! 5 stars. MW

Something I found interesting is that crude oil is useless as mixture so they distill it so separate it out. This is like the salt water of the ocean. The salt water, if drank, can dehydrate a person. But when distilled, the salt is separated from the fresh water and the water is now drinkable. It is intriguing to find other mixtures that can be distilled to be made useful. When they showed the clip on distillation of the crude oil mixture, it reminded me of the demo we did in class. We mixed water, copper sulfite, and sand together in one beaker. Then we filtered the sand out and all that was left was the copper sulfite and water. Last we used the distillation contraption and finally got the water by itself again.
 * Video Response:**

Dilina, Good post! I liked the word "contraption" :) 5 stars. MW

I found this article quite fascinating. I have always been dumbfounded on how motion detectors worked! One thing I did know was that bats used a type of motion detector to find their prey. I was neat to find things about how animals used this to find their food. Another thing I knew was that Einstein won a Nobel Prize for his photon equation and even though he has been mainly known for his theory of relativity equation. The last thing I knew before reading this article was that invisible waves were used at motion detectors. Something I learned after I read the article was that automatic doors use motion detectors and that they use signals bouncing off objects to activate them. this technology has become so high tech! Another thing I learned from this article is that there are 3 different types of motion detectors, signals bouncing off objects, light being blocked, and listening for warmth. I liked how this article related to everyday things that we encounter in our lives. The last thing I learned was that Heinrich Hertz's finding got the standard for light named after him. He found that a high intensity low frequency light wont make electrons fly but a low intensity high frequency will make electrons fly.
 * Motion Detectors Article Response:**

Dilina, It's actually a high frequency light that makes electrons fly - not high intensity. Overall good post. 5 stars. MW