You can change matter from one form to another by making molecules speed up and slow down. This project will show you how. A melting race Make sure the glasses are at room temperature. Put an ice…
> Sound comes from just about everywhere— from friends talking, radios > playing, jet planes roaring overhead. Even your breathing makes a tiny > sound. > > None of these sounds seem very much…
In the autumn, a woodchuck curls up into a ball in its underground home and goes to sleep. And it sleeps during the whole winter. The woodchuck’s sleep isn’t like the sleep you have at night. The…
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