Sawyer,+Danielle

The article I read was the makeup of mineral makeup. I learned many new things about mineral makeup but I also knew some things. One thing I knew was mineral makeup is made out of natural things to make it better for your skin. One thing I learned was mineral makeup is made from talc and mica powders. Another thing I learned was the combination of all the ingrediants is what makes the disired color of the makeup.

Danielle, Please follow the prompt and post things that you already knew along with things you learned. 4 stars. MW

One thing about the video we saw today that I learned was that crude oil is found below the surface. Also, I learned that it is a mixture containing mostly hydrocarbons. You can separate this mixture by using the distillation process. One thing I found interesting was that industry uses a similar process to distillation. I thought it was interesting that liquids with a higher boiling point would be on the bottom of the distillation column and liquids with a lower boiling point wold be towards the top. This relates to our class because we learn about density and how liquids with a higher density would be on the bottom.

Danielle, Looks good! You picked out the major points! 5 stars. MW

One thing I knew about motion censors is there is a beam and when it gets blocked by something, say a person, it triggers the light to come on. Another thing I knew was some motion detectors use infared radiation to detect when someone or something is near. I also knew that when light is shined on a surface it can eject the electrons. One thing I learned from this article was that this effect was first observed in 1887 by the German physicist Heinrich Hertz. I also learned that Einstein won a Nobel prise in 1921 for his work on the photoelectric effect. The last thing I learned was automatic doors use radio waves to set them off so they open.

Danielle, OK. Looks good! BTW it's infrared not infared. 5 stars. MW