Top 10 clouds facts Selected as the most interesting among nature related questions in Nature quiz On planet, except Earth, the greenhouse effect is observed? Venus. If a planet's atmosphere contains radiatively active gases, they will radiate energy in all directions. Part of this radiation is directed towards the surface, warming it. The greenhouse effect on Venus is particularly large because its dense atmosphere consists mainly of carbon dioxide.Created by: Tschukaspace facts » What is the name of this phenomenon?Iridescence is the phenomenon of certain surfaces that appear to gradually change colour as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, butterfly wings and sea shells, as well as certain minerals. It is often created by structural coloration (microstructures that interfere with light).Created by: Ninjaimeteorology facts » What clouds produce a drizzle?Stratus. The term stratus is used to describe flat, hazy, featureless clouds of low altitude varying in color from dark gray to nearly white. Stratus clouds may produce a light drizzle or a small amount of snow. These clouds are essentially above-ground fog formed either through the lifting of morning fog or through cold air moving at low altitudes over a region. Created by: Tschukaweather facts » What kind of weather should you expect seeing these clouds called Cumulus humilis?Sunny. These puffy clouds are called "fair weather cumulus". They have little vertical extent and do not give precipitation. When they appear in a clear sky, they are an indicator of pleasant weather for the next several hours.Created by: Harcerkageography facts » Which acid mostly contributes to acid rains?Sulfuric acid. The most important gas which leads to acidification is sulfur dioxide, coming from fossil fuel combustion and industry (and, in lesser amounts, from volcanoes and wildfires). In recent years, emissions of nitrogen oxides which are oxidized to form nitric acid are of increasing importance due to stricter controls on emissions of sulfur containing compounds. Created by: Cleoacids facts » What cloud occurs in the form of 'almost invisible curtain' and gives no rainfall?Cirrostratus is a high-level, very thin, generally uniform stratiform genus-type of cloud, composed of ice-crystals.Created by: Tschukaatmosphere facts » This is a rare phenomenon called iridescent clouds. It occurs in the clouds with ...Small droplets or ice crystals. The effect is similar to irisation. Iridescent clouds are a diffraction phenomenon caused by small water droplets or small ice crystals individually scattering light. Larger ice crystals do not produce iridescence, but can cause halos, a different phenomenon.Created by: Tschukasky facts » What cloud is it?Cumulus clouds are clouds which have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance. Cumulus clouds can be formed from water vapor, supercooled water droplets, or ice crystals, depending upon the ambient temperature. They come in many distinct subforms, and generally cool the earth by reflecting the incoming solar radiation. Created by: Tschukanature facts » What is the name of this cloud?Arcus clouds most frequently form along the leading edge or "gust fronts" of thunderstorm outflow; some of the most dramatic arcus formations mark the gust fronts of derecho-producing convective systems. Roll clouds also may arise in the absence of thunderstorms, forming along the shallow cold air currents of some sea breeze boundaries and cold fronts. Created by: Tschukanature facts » What cloud is it?Cumulonimbus, from the Latin cumulus ("storm cloud"), is a dense, towering vertical cloud associated with thunderstorms and atmospheric instability, forming from water vapor carried by powerful upward air currents. If observed during a storm, these clouds may be referred to as thunderheads. Cumulonimbus can form alone, in clusters, or along cold front squall lines. These clouds are capable of producing lightning and other dangerous severe weather, such as tornadoes. Created by: Tschukanature facts » Play nature quiz and see all the questions.