This document defines key vocabulary words related to weather including: weather, atmosphere, temperature, front, wind, anemometer, meteorologist, and weather map. Weather is defined as the happenings in the atmosphere at a certain time. Other terms defined are atmosphere, the air surrounding Earth, temperature as a measure of hot or cold, front as where two air masses meet, wind as the movement of air, anemometer as a tool to measure wind speed, meteorologist as scientists who study weather and atmosphere, and weather map as a map showing weather data over a large area.