http://www.teachmeteamwork.com/photos/uncategorized/pennychallenge_1_1.jpg For this experiment we placed droplets of water on a penny until the water spilled over the side. My prediction was that only about 15 drops would fit on a penny. However when I ran the experiment I fit 25 drops in one trial. Some of my classmates placed over 30 but some could only fit about 10. I think the technique was the reason for the wide range of results.Working slowly and placing the droplets of water on the penny carefully helped to fit more drops on the penny.
I think so many water droplets could fit on a penny because of capillary action, surface tension and cohesion. Capillary action is the combined force of attraction among water molecules and the molecules of surrounding materials. Surface tension holds the molecules of water tightly together and makes a dome.
I think it is very cool how you can place so many drops of water on a penny. I learned a lot about the properties of water. Water is very cohesive and it has a lot of surface tension.
I think so many water droplets could fit on a penny because of capillary action, surface tension and cohesion. Capillary action is the combined force of attraction among water molecules and the molecules of surrounding materials. Surface tension holds the molecules of water tightly together and makes a dome.
I think it is very cool how you can place so many drops of water on a penny. I learned a lot about the properties of water. Water is very cohesive and it has a lot of surface tension.
1 comment:
im your partner for the collaborative project. don't pay any attention to the nickname.
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