There are lots of good activities we can do in class with this topic, but the key ideas are again dealt with very nicely by the simple science website. Here is the link to the science and the song.
http://http://www.simplescience.net/6c_-_dissolving.html
Water can be contaminated by things that do dissolve and things that don't. We take our clean water supply for granted, but other people are not so lucky. Take a look at this video! http://http://www.youtube.com/watch?v=y8QY4wMYE3Q. These people have their health at risk. We have tried various ways to filter out dirt and nasties from water but have found that filtering only separates insoluble things from water.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment