Cloud - A collection of tiny water droplets or ice crystals that float in the air., Cumulus - Big, fluffy white clouds that look like cotton balls and usually mean fair weather., Stratus - Flat, gray clouds that cover the sky like a blanket and can bring light rain or drizzle., Cirrus - Thin, wispy clouds high in the sky made of ice crystals; they often mean nice weather but a change is coming., Condensation - When water vapor cools down and changes into liquid water droplets., Precipitation - Water that falls from the clouds to the ground as rain, snow, sleet, or hail., Vapor - Water in the form of an invisible gas in the air., Weather - What the air is like outside each day, such as sunny, cloudy, rainy, or windy., Evaporation - When liquid water changes into water vapor because of heat., Meteorologist - A scientist who studies the weather and makes forecasts., Observe - To look closely and notice details about what you see., Forecast - A prediction of what the weather will be like in the future., Sun - The main source of energy that drives the water cycle., Cycle - A pattern that happens over and over again in the same order., Collection - When water gathers back into rivers, lakes, and oceans after precipitation.,

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