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.
Relate you thoughts on this experment to the scientific question "Is the earth warming?"
1. Based on the research I found water that is frozen expands 9%. Although, I did not conduct an experiment I found it was difficult to measure the expansion of water, because I did not have a ruler and the cups I froze where different sizes and circumferences. I think my experiment had different results than my classmates because I took the temperature of the water in the cups, when there was a thin sheet of ice covering the rest of the water. Therefore, I think my results were different from someone in the class who did there experiment when the entire cup was frozen.Also, my results could have varied, because I used a freezer while other students put the cups outside. Some things I learned was that with more salt in the ice the water surface froze faster and that when you freeze water the molecules spread out.
ReplyDelete2. This experiment relates to global warming, because It takes water to freeze at 32 degrees Fahrenheit. If the greenhouse gasses are making the earth too warm, ice will not be made even at the coldest areas of the earth for example the north and south poles. This creates a problem of melting ice and glaciers in areas where climates were normally very cold. Yes, I do believe that the earth is warming. With more pollutions going out into the atmosphere it depletes the O-zone layer allowing the earth to be heated up faster and easier. You can see the warming effects not only from ice melting, but also from the perspective that animals who live in these climates and environments are dying creating negative effects that at this time are not reversible. I do hope in the future that we can reverse these earths damages of global warming.