That Rocks!
pieces of rock, soil, or the remains of plants and animals
Sediment
the process in which sediment is picked up and moved from one place to another
Erosion
the process in which transported sediment is laid down
Deposition
larger bodies of water that form as many streams flow together
River
the downhill movement of loose rock or soil caused by gravity
Mass Movement
soft rock erodes, leaving a hard ledge over which the stream falls
Waterfall
Carries fine, dry sediments over long distances. Can carve out landscapes as it carries sediment
Wind Erosion
The process by which glaciers pick up rocks as they move over land
Plucking
a stream or river that flows into a larger river
Tributary
a large mass of rock slides as a unit down a slope
Rockslide
the layer of stones and gravel left behind after wind blows away all the smallest particles of sand and silt
Desert Pavement
the process by which wind removes surface materials
Deflation
A calcite deposit on the cave floor that builds up as water drops from the cave roof
Stalagmite
an area of land formed by the buildup of sediment at the end, or mouth, of a river
Delta
a mixture of soil, water, and debris flowing downward, picking up sediment as it rushes down
Mudflow
A steep, vertical column of rock near a coast
Sea Stack
Flowing water will lift and carry small sediments such as silt and sand. Where water moves more swiftly there will be more erosion. Where the water slows down, sediments will be deposited. The steeper the slope, the faster erosion will occur
Stream Erosion
Sediment of different sizes left directly on the ground by a melting, or retreating, glacier
Till
a crescent-shaped lake formed when a stream cuts a new channel that by-passes a meander during a flood
Oxbow Lake
a slide of loose debris that moves as a single unit
Slump
Large boulders left behind by glaciers
Erractic
A natural opening eroded out of a cliff face
Sea Arch
A ridge formed from till deposited at the edges of a glacier
Moraine
the deposit of sediment that builds up when a stream that flows out of a steep, narrow mountain valley suddenly becomes wider and shallower
Alluvial Fan
the soil closer to the surface moves faster than the soil farther down
Creep