how can large clouds make shadows on mountains?
449037
the sun was behind the clouds, therefore there was a shadow.
990446
It's true that there isn't much air up high to hold heat and pass it on to you. But you'd be surprised at how short a distance you have to go to feel a big difference in temperature. Mountains that are only several thousand feet tall have permanent ice caps. The heat from the sun goes straight through the atmosphere. Much of the UV and other radiations are filtered but the longer waves go straight through until they get stopped and absorbed by the ground. The majority of the heat is then reflected back up from the ground to fill a very small layer. Try going to the top of a very tall building on a hot day, the temperature change should be noticeable there too.
991939
Clouds are made up of water vapour which rise into the air by the heat of the sun. They stay at a height where the sun has just enough effect to keep them up.
422752
Smoke or fog will work.  There are also 100mW red lasers out there (wickedlasers.com should do the trick) that have some visibility in daylight, but this always depends on there being something (even the tiniest amount of dust) in the air to scatter off of.
563639
huh?\n\nSome of the InSolAtion is trapped by the clouds. Esp. at night co heat up the Earth's surface.  \n\nAlbedo: Clouds absorbing the light
913566
the clouds from the sky helps regulate the temperatures.
14052
First of all, we need to remember that sunlight contains all the colors of the rainbow (after all, sunlight can be used to make rainbows!) Now, as sunlight travels through the atmosphere, it bumps into things. If it bumps into something big (like a bird, a plane, or Superman), it stops creating a shadow on the other side of the object. But if it bumps into something small, like water vapor or other molecules of gas, it gets sent into a slightly different direction than before (physicists would say that it "scattered") This scattering, however, is not the same for all colors; light at the blueish end gets scattered more than light at the redish end. So imagine a ray of light hitting the atmosphere at an angle. As it passes through, the various gases make the blue light spread out (some of it toward the earth and folks watching the sky) while the red light hardly gets scattered at all and zips by the planet. That's also why the sky on the moon is black even during the daytime. The moon has no atmosphere so nothing can bend some of the light (of any color) back to the surface.
619362
It is called a contrail,  condensation trail or vapour trail.\n\nCombustion of airplane fuel generates steam in the exhaust. At high altitudes the cold temperature of the atmosphere causes the steam to condense into water droplet or ice crystals (depending on the temperature). \n\nThe condensed water droplets / ice crystals disperse light, making them visible.
367371
Found this explaination for your question:\n\n"Shadows cast on the lunar surface should be parallel. Some shadows in the Apollo photos are not parallel indicating more than one light source, thus the photos are fakes. \n\nAgain there is a sound explanation; it is a simple a matter of perspective. A photo is a two-dimensional representation of a three-dimensional world, hence parallel lines may not appear as such on film. We all know how lines on a highway appear to diverge as they approach the observer, yet we know they are parallel. Another important factor that comes into play here is the slope of the ground. Let's consider two shadows - one cast on an upward slope and the other on a downward slope. If viewed from the side, these shadows would appear to go off in different directions. However, if viewed from high above, they would be seen as parallel. In other words, looks can be deceiving. There is no evidence of NASA trickery here. \n\nThis photograph [see photo], taken on Earth, is an excellent example illustrating how perspective causes shadows to appear non-parallel when seen on film. In this example [see photo] the astronaut on the right is standing on a small rise. The sloping ground has caused his shadow to elongate and appear at a different angle than the shadow of the astronaut on the left. Also note, if two spotlights produced the shadows then each astronaut would have two shadows." \n\nFor more information debunking "fake" moon landing follow link
751012
Clouds are formed essentially by water vapours.The uppermost layer of waterbodies like sea,river,ponds etc(specially sea) are in the process of evaporation always.now water vapour is a gas and due to the fa that the surface of the waterbodies and the earth is hotter,the watervapour expands its volume.As you must be knowing density of an object is its mass divided by volume.Mass being constant,if volume increases density decreases and the water-vapour getting lighter goes up.There the temperature being less ,the water vapour condenses into water-droplets and floats as clouds,
1052439
Possibly.  However, clouds are not stationary due to air currents and winds.  Chances are it would disappear out of the camera's range in a rather short time.  You should try it!
75320
This known as a mirage.  Very simply the hot air rising from the desert surface causes light (which travels in straight lines) to be defracted (this means that the line of travel changes when moving from cold air to hot air and vice versa)  This leads to two effects.\n\nFirst is a shimmering on the ground in the middle distance which resembles sunlight glistening in water.\n\nSecondly, objects that are in the far distance can be seen to be closer than they are.\n\nThese effects can be observed on road surfaces in the right conditions during hot summer weather.
123579
Shadows should be black, because a shadow is abscence of light. But really the air scatters lights, and what you see is the surface where the shadow is illuminated by this scattered light or by reflection on another surface.\nWhere there is no atmosphere you will see deep black shadows, for example in the pictures of astronauts in the moon.
226485
You reminded me of my childhood days. I used to ask my father the same Questions.\n\nClouds don't go any where during night. They are still there it only that there is not enough light for us to see them. Remember when you see moon light we see those clouds around or sometimes the moon hiding behind the clouds.
854216
Since a cloud is made up of lots of small droplets of condensed water (or, in the case of some clouds, the condensed water freezes into ice crystals), if you were able to "shake" the cloud (get the water droplets moving around randomly) they would collide and form larger water drops.  These drops should then eventually become heavy enough to drop from the sky as rain.\n\nWikipedia has a pretty good article on clouds.
924882
There are thousands of large objects up there.  Any evening within a few hours after sunset, and it's pretty common to see quite a number of them with the naked eye.  They catch the sun's light and you can see the dots moving across the sky.
723773
How Temperature Affects the Formation of Clouds\n\nor perhaps you have some interesting results from your project, like "Cooler Temperatures Increase Cloud Height" - or whatever you have found out from doing your project that you think is interesting!!!