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QHE Question:

The flat roof of a garden has 16 square sections. It begins to snow. At first just a few snowflakes fall, then after a while more have landed. Below are three sets of two pictures. Each set shows the pattern of snowflakes building up - first 4 flakes then 16 flakes.


QUESTION: Which of these sets best shows the kind of pattern you would expect to see as the snowflakes land?

Set A

Set B

Set C

Sets B and C

Each kind of pattern is as likely as the others.

Cluster activity from Stanford

Green (1983:773)

(see bilbliography)