https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:weather/v/weather 2024-09-30T02:22:49.903226946Z Weather Weather is the state of the atmosphere at a given place or time. Changes in weather are caused by air masses interacting to form weather fronts, such as cold or warm fronts. Because weather is so complex, weather predictions are only probabilities and not definite outcomes. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/83f1664d-a460-4aeb-a004-665acab3d92f_1280_720_base.png Weather Weather is the state of the atmosphere at a given place or time. Changes in weather are caused by air masses interacting to form weather fronts, such as cold or warm fronts. Because weather is so complex, weather predictions are only probabilities and not definite outcomes. https://cdn.kastatic.org/ka-youtube-converted/U5ikrkOGio0.mp4/U5ikrkOGio0.mp4 243 Weather https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:weather/a/weather-ms 2026-04-26T16:30:39.382257956Z Key points: Weather Review your understanding of weather in this free article aligned to NGSS standards. article https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:weather-and-climate/x87d03b443efbea0a:weather/e/understand-weather 2026-04-26T16:30:39.382257956Z Understand: Weather Check your understanding of weather in this set of free, standards-aligned practice questions. Lauren Rosebrugh exercise