Monday, June 8, 2009

Week of June 1-5

This week we talked about how molecules work in different situations.  We did an experiment where Mr. Finley had a test tube and he put water in it.  He put the test tube over fire and we had to explain what was happening.  I thought what was happening was that all of the water molecules were heating up because of the fire.(P.S. we also learned that fire or heat is not a thing even though people talk about it like it is, like gravity.  But heating is a process so I was allowed to say what I just said).  The molecules at first were vibrating at a normal pace.  Then, because they were over the fire they heated up they started to vibrate faster and faster until they were popping out of the water.  They also wanted to be evaporated so they were going up.  The cork eventually couldn't hold the pressure and popped off.  The next day the bottom popped off too so that was cool.  We also had to say what happens in a thermometer.  I get what happens there.  The mercury gets the heat from the sun and whether it's hot or cold it goes up or down because if it's hot the mercury expands.  If it's cold it shrinks.

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