Weather

A space traveler from another planet contacts a meteorologist on Earth to ask questions about weather. Explains how the sun's heat causes air currents to rise and fall in the atmosphere. Details the water cycle, explaining the processes of evaporation, condensation and precipitation. Identifies cumulus, cirrus, and stratus clouds. Explains that thermometers measure temperature, anemometers measure wind speed, weathervanes and windsocks measure wind direction, and rain gauges measure rainfall.