Clouds form when ___. A. water evaporates B. water freezes C. the air is warm D. the air is dry 相关知识点: 试题来源: 解析 A。云是在水蒸发的时候形成的。选项 B“水结冰”不是云形成的原因;选项 C“空气温暖”不是云形成的主要原因;选项 D“空气干燥”不利于云的形成。反馈...
结果1 题目Clouds form because___. A. the air is cold B. water vapor in the air condenses C. the sun shines too brightly D. the wind blows hard 相关知识点: 试题来源: 解析 B。云是因为空气中的水蒸气凝结形成的。反馈 收藏
Air always contains some water vapour from oceans, lakes, and the ground. Clouds form when the air cools below a certain temperature, so that some of the water vapour turns to liquid water or ice. Clouds are made up of millions of minute water droplets or ice crystals, which are so tiny...
Cloud Science- Cloud formation in the atmosphere is a complex process driven by physics, temperature, and moisture. They form when warm, moist air rises and cools, causing the moisture to condense into tiny droplets or ice crystals. The process is called condensation, and it's influenced by ...
They form when warm, moist air rises, cools, and condenses into visible particles. This process is divided into three main steps: evaporation, condensation, and precipitation. Evaporation is the first step in cloud formation. It occurs when water from the Earth's surface, such as lakes, ...
The cooler air causes the water drops to start to stick to (粘附) things like bits of ice or sea salt and so on. What Are Some Kinds of Clouds? 3 One way is by where they are found in the sky. Some clouds are high up in the sky. Low clouds form closer to Earth’s ...
When the air is colder, the water may form snowflakes instead. Some snows are so heavy that they fall from clouds. Why are clouds so important for humans? Rain and snow are two of them. At night, clouds reflect (反射) heat and keep the ground warmer During the day, clouds make shade...
Clouds form when air cools to the dew point, the temperature at which the air can no longer hold all its water vapour. At this temperature, water vapour condenses to form droplets of liquid water, which we observe as a cloud. For this process to happen, we require air to be forced...
Is fog a cloud? Fog isa cloud that touches the ground. ... Fog shows up when water vapor, or water in its gaseous form, condenses. During condensation, molecules of water vapor combine to make tiny liquid water droplets that hang in the air. You can see fog because of these tiny wat...
Thunderstorm clouds form when warm air currents rise above the Earth’s surface creating cumulonimbus clouds. These clouds produce rain, lightning, hail and occasionally tornadoes. Thunderstorm clouds Thunderstorms form on warm sunny days when warm air currents rise above the Earth’s surface producing...