- The making of a cloud
- The making of a cloud quiz
- Why so many cloud types?
- Why so many cloud types quiz
- Clouds and weather
- Clouds and weather quiz
- Severe storms
- Severe storms quiz
- The climate wild card
- The climate wild card quiz
- The Coriolis effect
- The Coriolis effect quiz
Clouds affect us every day, no matter the weather. But what exactly are clouds and how do they form? And how can they help us predict severe storms, the availability of water, and our future climate?
. Created by NOVA.
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- What is frost ? Does it comes out of clouds(6 votes)
- Frost is the coating or deposit of ice that may form in humid air in cold conditions, usually overnight. In temperate climates it most commonly appears as fragile white crystals or frozen dew drops near the ground, but in cold climates it occurs in a greater variety of forms. Frost is composed of delicate branched patterns of ice crystals formed as the result of fractal process development.
Source: http://en.wikipedia.org/wiki/Frost(4 votes)
- if the vapor forms around pollution how can we consider rain water as "pure"(given in cbse board textbooks in India)(4 votes)
- It can be pure, but rain can also be impure. Like acid rain. But other than that, evaporation tends to leave behind any impurities.(1 vote)
- Why does all the water vapor in a cloud tend to get too heavy and fall at the same time?(2 votes)
- This often happens due to changes in the climate of the air surrounding the cloud. One common time for rain is when a cold front comes in. The incoming cold air forces the existing warmer air to rise. With the rapid rising of warm air more water is condensed into the clouds. The clouds are also being forced higher and at the higher in atmosphere you get the less weight that can be held. So with the cold front you have heavier water droplets and less ability to hold them resulting in a the moisture being released as one rain storm.(4 votes)
- At2:17, they explain that condensation forms around particles of dust, ice, sea salt, and pollution. Does the type of particle impact the condensation process?(3 votes)
- This is a little bit of a weird question, but why do clouds float? Does gravity affect clouds falling at least a tiny bit?(2 votes)
- Denser object move towards the center of mass. Clouds have less density than the air below them. Thus they are buoyant. If gravity didn't affect them, they would not remain on Earth.(2 votes)
- I read in an article that "Aerosols are liquid or solid particles Suspended in the atmosphere (not including water droplets)
Yet somewhere else it said that aerosols are Natural inorganic materials that include water droplets...
Do aerosols contain water droplets or not?(2 votes)
- Exhaled air is an aerosol containing endogenously generated droplets. These droplets contain water and nonvolatile material, and “particles” is, therefore, the physical designation, even though they are liquid droplets.(1 vote)
- Will in the future be more clouds that have never been discovered in the future? Or will it stay the same?(0 votes)
Most of the time if we pay attention to clouds at all. It's because of their effect on our local weather or Maybe it's because they make a sunset prettier But what you might, not know is that clouds affect us every day even if we're staring at a clear blue sky? The clouds we [see] when we look out the window our important components of a complex global weather system They play a key role in Earth's water cycle carrying huge amounts of Fresh water and dropping it as precipitation and Depending on their properties and where and when they form clouds can have dramatic effects on our climate Influencing the locations and severity of floods and droughts and even the temperature of our planet as a whole So by understanding clouds we can better predict severe storms the global Distribution of fresh water and the course of climate change, but what exactly are clouds and how do they [form]? all clouds share the same basic ingredient water They're made up of water droplets or ice crystals that [are] formed from water Vapour in the atmosphere Although you can't see it or feel it the air around us contains water even on the clearest summer day The main sources of this vapor are evaporation. Which is the escape of water molecules from the surface of oceans lakes and soil and Transpiration the release of Water by Plants as The Sun Warms Earth's surface heat is transferred into the atmosphere along with water vapor The warmer the air the more moisture it can hold but warm air doesn't usually stay near the [surface] for long Like a hot air balloon. It rises as it does it cools the Colder the air becomes the less water vapor It's able to hold if the air becomes cold enough It reaches a state called super Saturation which causes some of the water vapor to transition back to a liquid or solid state Water molecules in the vapor form around tiny particles of dust ice sea salt and pollution suspended in the atmosphere These particles called condensation Nuclei serve as the starting point for the formation of water droplets and ice crystals With this final step repeated billions and billions of times the water that's been in the atmosphere all along is suddenly visible and a cloud is born While we can now see the cloud the individual droplets, or ice crystals are tiny Which is why they remain airborne? But they can combine to form larger drops or crystals and if they become large enough and too heavy to stay aloft They'll fall as rain snow sleet Or hail back to Earth's surface where the water in them came from originally?