The models we developed initially were so varied we decided we needed to agree on something and work from there. After looking at lots of people's work, we agreed on the following:
1. Both air and water are made of particles, now of we which can call molecules.
2. Air and water are different, so we must represent them differently as molecules.
3. The water level in the open cup system decreases over time, and the only place it can go is into their air.
We aren't entirely sure how this happens (we know it's called evaporation), but how exactly does this happen when it's not over a heat source? We're tabling that for another time as we know it's related to energy but we're not sure how to investigate that...
Read the captions that show our thinking (as we met as a class around models)!
1. Both air and water are made of particles, now of we which can call molecules.
2. Air and water are different, so we must represent them differently as molecules.
3. The water level in the open cup system decreases over time, and the only place it can go is into their air.
We aren't entirely sure how this happens (we know it's called evaporation), but how exactly does this happen when it's not over a heat source? We're tabling that for another time as we know it's related to energy but we're not sure how to investigate that...
Read the captions that show our thinking (as we met as a class around models)!
We settled on the following: water level decreasing (with particles close to each other), water moving into the air (somehow, we don't really know how), more space around both the water and air molecules up in the air (b/c we can't see them).