This violently rotating air column extends from a thunderstorm to the ground.

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ScienceOne small aha

Your new ahaTornado

A tornado is a rotating column of air in contact with the ground and a cloud base. Source: Tornado ↗

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60This long, deep, narrow depression in the seafloor commonly forms at a subduction zone.RECALL
Ocean trench
Subduction zones create many trenches
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61This envelope of gases surrounds Earth.RECALL
Atmosphere
It supports weather and life
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01Earth's outermost solid layerRECALL
Crust
Continental and oceanic crust differ
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