Sounds Around Us
Pick the smallest grain you can find, and advise the students that it is still 5 times bigger than it should be to make this model. Venus 12,100 0.24 Grain of sand or salt. Earth 12,800 0.25 Grain of sand or salt. Moon 2,200 0.04 Smallest grain of sand. Mars 6,800 0.14 A tiny grain half the size of the earth grain. Asteroid Belt Chalk dust. ................
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