Here’s a super-simple experiment for the next time it snows. It combines a whole host of scientific ideas, from talking about liquid vs. frozen states of matter to making a hypothesis.
First, we needed to fill a clear glass jar with snow. For the best results, make sure to tamp the snow down so your jar is truly filled all the way.
We took the jar inside and measured the snow (15 cm) and made guesses as to how much water would be left once it melted, keeping in mind past lessons on how ice takes up more space than water.
Travis guessed really low, at 2 cm! I chose 5 cm to keep things interesting. I tried marking our guesses directly on the jar, but since it was still a little wet, we found that masking tape worked better.
Next we needed to be scientific and record our results. We took measurements at one hour intervals over the next three hours with the following results:
3.27 pm – 15 cm
4.27 pm – 12 cm
5.27 pm – 7 cm
6.27 pm – 4 cm – all water!
It was neat to see that it took a full 3 hours, as well. Next time, we’d make hypotheses about the timing as well, and record that at the start.