Experiment of December 2, 2025:

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Solution video:

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Experiment:

Question:

What does Mrs. Santa observe?

A) After a short time, the grains of sand stop falling through the notch.

B) The grains of sand fall faster through the cold egg timer.

C) The grains of sand fall faster through the warm egg timer.

D) The grains of sand fall individually through the cold egg timer and in groups of 10-20 grains through the warm egg timer.