Green River Clean-up and more

So many students showed up and made a difference during the Green River Clean-up last weekend! I was proud to be a part of it with them. The weather was beautiful and I think the students had a great time, despite dealing with some unpleasant trash to pick up.

In class we're working on understanding Earth's interior. I had students make some predictions before a demonstration with hot and cold water. Sounds like they had seen this one before, but it's good to get a refresher. Can you tell why one set has hot water (yellow) separate from the cold water (blue) and why one set is mixed (green)??