Food
Steam pressure
Popcorn pops because heated water inside the kernel builds pressure.
A popcorn kernel is a tiny pressure vessel: heating its trapped water helps turn a dense seed into a light, expanded starch foam.
Popcorn pops because heated water inside the kernel builds pressure.
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Food
Berry
Bananas are berries. Strawberries are not.
Bananas are botanical berries, while strawberries are aggregate accessory fruits. The distinction depends on how a flower becomes a fruit, not on sweetness, size or the name on a grocery label.
Food
Legume
Peanuts are not nuts. They are legumes, like peas and beans.
Peanuts are legumes, in the same plant family as peas and beans, rather than true botanical nuts. Their unusual feature is that the flowers develop above ground but the pods mature below it.
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