Is it cloudy with the sun?

Cloud cover is a term in meteorology. In the weather forecast, there is a strict definition of cloudy weather, which can be called the weather between sunny and cloudy. Cloudy weather means that there are many clouds in the air and the sun appears from time to time. Weather forecast is a forecast of the future weather. The weather forecast of the day is predicted by collecting a lot of information related to the atmosphere.

Be careful of ultraviolet rays when you are active in cloudy weather. Ultraviolet rays are invisible to the human eye, but too much ultraviolet rays may hurt the eyes. It's cloudy and sunny, but you can still see sunny days through the cracks in the clouds. Cloudy weather There are clouds in the sky, but it can't form rain. The sky is full of cumulus clouds. Cloudy days can form precipitation, and there are cumulonimbus clouds or stratocumulus clouds in the sky.

How is cloudy formed?

Clouds floating in the sky are composed of many tiny water droplets or ice crystals, some of which are mixed together. Sometimes it also contains some big raindrops and ice particles. The bottom of the cloud does not touch the ground and has a certain thickness. When the clouds are all together, the sky will be cloudy.

Clouds are the tangible result of the huge water cycle on the earth. The sun shines on the surface of the earth, and water evaporates to form water vapor. Once the water vapor is supersaturated, water molecules will gather around the dust (condensation nucleus) in the air, and the generated water droplets or ice crystals will scatter sunlight in all directions, thus creating the appearance of clouds.

The above contents refer to Baidu Encyclopedia-Cloudy.