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My son is learning to make a lab report, so I’m transcribing his report for him as I’m proud of the effort he put into this. This came up as part of studies on Canada.
Hypothesis: Icebergs will melt faster in freshwater than in salt water.
Procedure: Get two bowls. Make one bowl saltwater like the ocean 3.5% salt needed. Have the other bowl be fresh water. Let the bowls sit so they are same temperature. Freeze two cups of water in two identical cups. Take them out of the cups when they are completely frozen. Use cold water to get them out of the cups. Weigh them. Put them in their bowls. Then weigh them 30 minutes later, Then 15 minutes later.
I noticed at 30 minutes that the fresh water one had melted the
most. At 15 minutes I did it again and noticed the same thing.
Observations: take the icebergs out of the water and weigh them. They will be slippery and cold plus you don’t want the heat of your hands changing the results so wear gloves. Put them back in the water as soon as you weigh them.
Conclusion: Because the fresh water one melted the most I proved my idea correct. Fresh water will melt icebergs faster than the saltwater probably because of the salt in the water.
Other questions raised:
I noticed that both Filli and Killi were left with their heads frozen in the ice and wondered why their heads thawed out last.