Activity 1 1-20-11 Experimental Design and Conclusions

Reflect on the expansion of water and salt water experiments you and your classmates performed. What are some of the interesting results and struggles with this experiment.

The water/salt water experiements had interesting results. Before doing this experiment I didnt know that salt would make water take longer to freeze.  It was hard to measure the results for expanison.  I could see that my cups expanded but I didnt know how to measure it.  Another thing I noticed about the experiements was everyone in the class had different results.  Also everyone in the class did their experiment alittle different. I would have liked to work with other people on this experiment and see what 2 minds put together would have come up with. We learned today that there are lots of ways to do experiments. 

Relate your thoughts on this experiment to the scientific question "Is the earth warming?"

I think there is so much controversy about the green house effect and "is the earth warming" because everyone's experiments on the green house effect is different. Today in class we talked about adding salt to water and what happens when it freezes and everyones experiment was different.  The data collected on the salt water experiment was different. That being said, I think researchers are finding different results and to some people the green house effect is a really big deal and to others its not a big deal at all.  All of the experiements on "is the earth warming" are all different and that makes it hard to come to a conclusion about it.