Three things I learned this unit is that heat makes matter expand. Another thing that I learned is that the cold makes objects contract. I have also never heard of people putting gaps in between railroads and roads.The thing I liked best in the unit was doing so many group projects together with my table. The thing I disliked were all the power points I found that boring. A question I have about the unit is why does it get hotter when you get closer to the ground then when you are on a mountain or a place high up? What did you like? What didn't you? Can you answer my question?
~zebra (Zebra is what I will call myself!)