Wenger,+Jennifer

The Makeup of Mineral Makeup

I use this type of makeup and I wanted to see if all the buzz about it was true. One thing I had already known about this makeup is it is a powder that is made up of minerals. These minerals are supposed prevent bacteria from forming. Another thing about mineral makeup that I had known prior to reading this article was that it is supposedly better for you skin than other types of creamy makeup. The last thing I had known about mineral makeup was that it was that it helps your complexion look more natural. I did not know, however, that this makeup does have natural ingredients in it. The catch is that these other bad ingredients are not taken out of the powder, which makes this makeup pretty close to all the rest. I also had no idea that this product used to be sold in only dermatologists offices to people who had just gotten plastic surgery. From reading this article, I also found out that since this makeup doesn’t have fragrance to it, which actually helps from breakouts starting.

Jenn, Looks like you picked up some interesting info! Well written post. 5 fragrance free stars! MW

9-19 Science Bank Use distillation to separate Hydrocarbons. vaporize at a low boiling point 40 C. Arent hot enough-raised to 60 C, turned yellow. Fractional Distillation (highest are vapor) One thing I found interesting about this video was that we got to see what goes on in the distillation process first hand which helped us grasp the info easier. I also think it is so cool that people are able to do this sort of thing to separate mixture that we would originally think would be impossible. When first watching this separating process I didn't quite understand how the water could evaporate and leave the other substance. But now I understand that water and another substance usually have different boiling points, so you evaporate the water (separating it), and then re-condense it into another container.

Jenn, As you can see any mixture that contains substances with different boiling points can be separated using distillation. 5 stars. MW

10-3 Motion Detection I think the idea of motion detection is a good thing because it can help people in many ways. One thing I knew already about motion detection was that there were three types: the light source, the pulse detector, and the warmth detector. Another thing I already knew about motion detection is that for the warmth detector, as humans we give off infrared radiation, which then gets detected. I also knew that when the photo sensors are detecting light they are detecting the lights us humans can and also can not see (ultraviolet, visible and infrared). From reading this article I found out that the name for the frequency label came from the physicist who first observed the photoelectric effect (Heinrich Hertz). I also would have thought that something of the same mass but different material would cause the same damage, but it only comes down to the individual particles. The last thing that I learned from this article was that when a bat swoops down on moths and eats them in complete darkness they are relying on sound waves to do so. Jenn,

Great job! Well written. 5 stars. MW