Earth’s Weather and Seasons Chapter 6- Vocabulary Water Cycle- The way water moves from the clouds to earth and back to the clouds. Water condenses and evaporates during the water cycle. Evaporate-To change from a liquid to a gas. Condense-To change from a gas to a liquid. Migrate- To move from one place to another in a regular pattern. Hibernate- To spend all winter sleeping or resting. Lightning- A flash of electricity in the sky. Tornado-Very strong wind that comes down from clouds in the shape of a funnel. Hurricane- A storm that starts over warm ocean waters that has hard rain and very strong winds.