Digital Lesson 7.3 Flashcards
Weathering
When wind, rain, and temperature changes beak down rock
Chemicals weathering
The chemical breakdown of rocks
Physical weathering
The mechanical breakdown of rock into smaller pieces, caused by natural processes
Erosion
The process by which wind, water, ice, or gravity transports soil and sediment from one location to another
Deposition
The process in which material is laid down
When water freezes, it
Expands and thaws to break rocks
What type of physical weathering is caused by the repeated freezing and thawing of ice
Frost wedging or ice wedging
Exfoliation
When rock splits and breaks off in sheet layers, similar to onion layers
Difference between mass movement and creep erosions
Mass movements happen quickly and creep erosions happen slowly
Moving water can form what
Valleys and canyons
How do alpine glaciers cause erosion
As these huge masses of ice grow,
They slowly advance down valleys and scrape pieces of land
What features are formed by alpine glacial erosion
U shaped valleys
What is a wave cut platform
Form when a cliff collapses
How is a sea arch formed
It forms when 2 caves form back to back and water continuously hits them,
The rock between the caves is eroded, forming a sea arch
Delta
Coastal deposits shaped like triangles. Form when River enters another body of water
Barrier islands
Large mounds of sediment dropped parrallel to the shore
Sand spits
When waves and currents deposit sand perpendicular to the shore, sandspits form. Sandspit form just out of the beach or the mainland
Alluvial Fan
Triangular deposit formed on land
Till
Sediment dropped off by a glacier
What is continental glacier called
Glacial erratic
What is the drumlin and how can it be used
Deposit form when a massive ice sheet or continental glacier covers the land. Long narrow hills of sediment are left behind
Outwash
The sediment deposited by glacial meltwater
Land features formed by weathering
Oxidation rocks, exfoliation dome
Land features formed by erosion
Rockfall, Valley
Land features formed by deposition
Delta, drumlin
Difference between stalactites and stalagmites
Stalactites are rock “icicles” that hang from cave ceilings. Stalagmites are rock pinnacles that seem to grow upward from the cave floor
