A waterfall is a water feature along a stream with a vertical drop in the stream bed. This drop causes the water to fall over an edge, giving the term its defining characteristic.Know More
There are many descriptive names used for waterfalls. There are "cataract" waterfalls, which are big, powerful and often associated with rapids, and "cascade" waterfalls, which have several levels or steps as the water descends. If the water simply plunges over an edge and free falls into a pool below, it is called a "plunge" waterfall.
If a wide stream simply falls over an equally wide edge presenting the appearance of a falling sheet of water, it is a "sheet" waterfall. If the water going over stays in contact with the rock face of the falls it can be described as a "horsetail" waterfall. There are also "tiered" waterfalls in which the water goes over one edge and lands in a pool, but it then immediately falls over another edge.
A waterfall can be natural or artificial depending on whether human intervention was involved in making it. A waterfall could be described by the volume of water that goes over it as well as how the volume varies by season or flood stage. A waterfall can also be described by its width, height, the mist produced, its sound and its general appearance. Waterfalls can be tricky to define scientifically, and geologists often do not agree as to where the true beginning and end of a waterfall is located.Learn more about Earth Science
Freshwater biomes' temperatures vary greatly from the mid 70s in the summer and fall all the way down to freezing in the winter seasons. These temperatures can go above or below these median temperatures if there are abnormal weather patterns influencing the area. Freshwater biomes include lakes, streams, ponds, rivers and wetlands.Full Answer >
A person who studies the ocean is called an oceanographer. Oceanography is a scientific discipline that encompasses all aspects of the Earth’s oceans and seas. This includes their physical and chemical properties, their origin and geologic framework and the life forms that inhabit the marine environment, according to Encyclopaedia Britannica.Full Answer >
According to the U.S. Geological Survey website, tectonic plates are massive, irregular-shaped slabs of solid rock, composed of oceanic and continental lithosphere. The continental crust is made up of lightweight minerals like feldspar and quartz, while the oceanic crust is made of heavier and denser basaltic rocks.Full Answer >
The troposphere starts at the Earth's surface and extends up 5 to 10 miles depending on the location. The temperatures of the troposphere can vary from up to 130 degrees Fahrenheit near the Earth's surface to as low as minus 112 degrees Fahrenheit near its upper limit, the tropopause.Full Answer >