A group of scientists recently proposed the idea that beets should replace salt for melting winter ice. The scientists pointed out that because beets grow underground, they continue to grow in freezing conditions. Thus, they hypothesized, an extract of beet roots could melt ice on roads in winter. To test this hypothesis, the scientists froze equal volumes of water
on two separate plates. They spread an extract of beet
roots on one plate of ice and sprinkled an equal amount
of salt over the other plate. After keeping both plates at
0°C (the temperature at which water freezes) for a period of time, they measured the amount of melted water on each plate. Their results showed that the plate treated with beet extract contained more liquid water than the plate treated with salt.
What is the question or problem? What question are the scientists trying to answer?
What is the hypothesis? What educated guess are the scientists making?
Make a prediction. Remember, a prediction is a statement of
if the hypothesis is true, then...
What are the steps in the experiment? (List four steps)
How did the scientists test the hypothesis?
What is a possible conclusion for the results of the experiment? How do the experimental data answer the question from the beginning?
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