ch 3 Flashcards
the two types of forces that create landforms
- Forces that push move and raise the earths surface
- Forces that scour wash and wear down the surface
2 main processes that alter rocks
- Forces that tend to build landforms up
- Traditional processes that wear landforms down
the three types of plate boundaries (DTC)
divergent, transform, convergent
Divergent plate boundaries
where plates move away from one another
Transform plate boundaries
one plate slides horizontally past another plate
Convergent boundaries
two plates move toward each other, one slides over the other
what are the results of boundary movement? (FSH)
faults, subduction zones, hotspots
faults
areas where there are cracks in the earths crust/ break in the earth
subduction zones
adjacent plates are forced to rise and fall
hotspots
as the lithospheric plates have moved, the Earth’s crust has been cracked or broken in virtually thousands of places
what are the 2 types of tectonic forces and what they consist of?
- Diastrophism: broad warping (bowing of earth, can also be from the changing og a large region)
Volcanism: the eruption of molten rock onto the surface of the earth
what are the 3 types of gradational processes (WME)
weathering, mass movement, and erosion
weathering
the breakdown and decomposition of rocks and mineral at or near the Earth’s surface in response to atmospheric factors (water, air, temperature)
- mechanical: physical disintegration
-chemical: rocks decompose instead of disintegrate
mass movement
things will fall if not held up due to gravity
erosion
earthen materials are worn away and transported by natural forces such as wind or water
