Alluvial fans exist on other planets. The presence of alluvial fans on Mars gives evidence for the existence of liquid water on the planet billions of years ago.
a buildup of something.
the art and science of cultivating the land for growing crops (farming) or raising livestock (ranching).
fan-shaped deposit of eroded material, usually sediment and sand.
gravel, sand, and smaller materials deposited by flowing water.
tip, point, top, or summit.
area covered by a deposit of sediment, usually at the foot of a hill or glacier.
area where several alluvial fans meet.
deep, narrow valley with steep sides.
deepest part of a shallow body of water, often a passageway for ships.
all weather conditions for a given location over a period of time.
triangle-shaped deposit of eroded material transported by mass wasting.
to meet or come together.
flowing body of water that is smaller than a river.
steady, predictable flow of fluid within a larger body of that fluid.
remains of something broken or destroyed; waste, or garbage.
alluvial fan with a slope of more than 10 degrees.
to place or deliver an item in a different area than it originated.
area of land that receives no more than 25 centimeters (10 inches) of precipitation a year.
varied or having many different types.
sudden, short, and heavy flow of water.
mass of ice that moves slowly over land.
small stones or pebbles.
environment where an organism lives throughout the year or for shorter periods of time.
land that rises above its surroundings and has a rounded summit, usually less than 300 meters (1,000 feet).
activity that produces goods and services.
the fall of rocks, soil, and other materials from a mountain, hill, or slope.
downward movement of rock, soil, and other material.
landmass that forms as tectonic plates interact with each other.
flat, smooth area at a low elevation.
vulnerable or tending to act in a certain way.
large stream of flowing fresh water.
part of a plant that secures it in the soil, obtains water and nutrients, and often stores food made by leaves.
overflow of fluid from a farm or industrial factory.
small, loose grains of disintegrated rocks.
solid material transported and deposited by water, ice, and wind.
type of plant, smaller than a tree but having woody branches.
small sediment particles.
slant, either upward or downward, from a straight or flat path.
body of flowing fluid.
triangle-shaped deposit of sediment transported by an underwater current or glacier.