SmallQuestions
What causes fog? Fog forms when air close to the ground becomes saturated with water vapor and some of that vapor condenses into tiny liquid droplets. This usually happens because the air cools to its dew point, gains extra moisture, or both. In simple terms, fog is a cloud that forms at ground level. Table […]
What causes lightning? Lightning is a giant spark of electricity that happens when electrical charges build up inside a thunderstorm and then discharge through the air. The flash may travel within one cloud, between clouds, or from a cloud to the ground. Table of contents What happens inside a storm? How do charges separate? How […]
Table of contents How thunder forms Why thunder sounds different Thunder safety Short answer What causes thunder? Lightning heats the air around it extremely quickly. The air expands in a sudden shock wave, and that moving pressure wave is the sound we hear as thunder. What causes thunder is the rapid expansion of air around […]
Why do we see lightning before we hear thunder? Lightning happens first, but we see it before we hear thunder because light travels much faster than sound. The flash reaches your eyes almost immediately, while the sound wave needs time to move through the air. Table of contents Light and sound travel at different speeds […]
Table of contents The short answer How rain forms Why clouds release rain Different kinds of rain Why rain matters What is rain? Rain is liquid water that falls from clouds to Earth. Understanding what is rain helps explain the water cycle. It forms when water vapor cools, condenses into droplets, and those droplets grow […]