风景优美的瀑布动态壁纸 v3.6.0.0 APK (Unlimited Money)

Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens slowly, while downstream the erosion occurs more rapidly. As the watercourse increases its velocity at the edge of the waterfall, it plucks material from the riverbed. Whirlpools created in the turbulence as well as sand and stones carried by the watercourse increase the erosion capacity. This causes the waterfall to carve deeper into the bed and to recede upstream. Often over time, the waterfall will recede back to form a canyon or gorge downstream as it recedes upstream, and it will carve deeper into the ridge above it. The rate of retreat for a waterfall can be as high as one and half meters per year.

Often, the rock stratum just below the more resistant shelf will be of a softer type, meaning that undercutting due to splashback will occur here to form a shallow cave-like formation known as a rock shelter under and behind the waterfall. Eventually, the outcropping, more resistant cap rock will collapse under pressure to add blocks of rock to the base of the waterfall. These blocks of rock are then broken down into smaller boulders by attrition as they collide with each other, and they also erode the base of the waterfall by abrasion, creating a deep plunge pool or gorge.

Baatara gorge waterfall near Tannourin, Lebanon
Streams become wider and shallower just above waterfalls due to flowing over the rock shelf, and there is usually a deep area just below the waterfall because of the kinetic energy of the water hitting the bottom. Waterfalls normally form in a rocky area due to erosion. After a long period of being fully formed, the water falling off the ledge will retreat, causing a horizontal pit parallel to the waterfall wall. Eventually, as the pit grows deeper, the waterfall collapses to be replaced by a steeply sloping stretch of river bed.[1] In addition to gradual processes such as erosion, earth movement caused by earthquakes or landslides or volcanoes can cause a differential in land heights which interfere with the natural course of a water flow, and result in waterfalls.

If you're not sure what live wallpapers are, they're a type of application that works on a mobile device using the Android operating system like your device!. The application works as a wallpaper – providing the background image for the home screen—but also works as a conventional application since it can provide user-interaction with the touch screen allowing the image to change dynamically, for example and access other hardware and software features within the device accelerometer, GPS, network access, etc..

**Multiple backgrounds!** Switch up the background as often or as little as you like with user-configurable options.

**Power saving features!** This app uses much less power than typical live wallpapers. It will take a bit more power to operate than a normal wallpaper, but much, much less battery power than the average live wallpaper.

**Super easy to use!** Upon install the app will bring up the options menu and then immediately let you set the wallpaper. No hassle and easy to use!

**Translated to 35 languages!** Do you really, really want to learn Russian? We didn't think so, but it's available just in case, in any language your phone can display!

Please note that live wallpapers can't be set automatically. We'll bring you to the setup screen where you'll select the live wallpaper. We'd love to do it automatically but Android doesn't allow it. Maybe some day.

Select text from Wikipedia, which does not endorse this product. No waterfalls were splashed in the making of this app. Licensed under the creative commons (creativecommons.org/licenses/by/3.0/). Text at wikipedia.org/wiki/Live_Wallpaper and wikipedia.org/wiki/waterfall.