7A What is a Mountain
Topography
the features of the earth's surface in a particular region, including different landforms with varying elevation.
Which of the following is not a landform?
a. Mountain
b. Valley
c. River
f. Cloud
Cloud
What are fold mountains?
Fold mountains are mountain landforms created by folded rock strata.
What are examples of uplift landforms?
Plateaus and domes
What is erosion?
Erosion is the process of wearing away rock and transporting sediments.
What is isostasy?
the balance between the downward weights of rock, water, and ice, and the upward, buoyant force exerted by the mantle.
Would a dense layer of earth's crust be lower or higher than a less dense layer of crust?
The more dense layer would be lower because it sinks into the mantle (like a heavier boat floats lower in water than a light one)
What is a syncline?
A syncline is a downward fold of rock strata.
What is a plateau?
A plateau is a broad region of relatively undisturbed sedimentary deposits lifted by some tectonic process.
What is deposition?
The process in which solid particles drop from a moving fluid to the bottom of a fluid. These solid particles gradually form landforms over time.
What is the landform?
A shape or structure on the earth's surface such as a mountain, valley, beach, plain, desert, plateau, or lake.
Are continental crusts thicker or thinner beneath mountains?
Continental crust is thicker beneath mountains.
What kind of landform are fold mountains an example of?
Convergent landforms
What is a dome?
A dome is a landform (that looks like an upside-down bowl) formed when molten magma deep underground pushes up on a relatively small area of overlying rock strata.
What are some examples of erosional hills and mountains?
Mesas, buttes, pinnacles, and monadnocks are examples of erosional hissls or mountains.
Orogeny
The tectonic processes and landforms of mountain building
What is the actual height of a mountain?
The actual height of a mountain is the height of its summit above the lowest elevation of the surrounding terrain, or base.
What kind of tectonic movement forms divergent landforms?
Divergent landforms are created by tectonic plates moving away from each other.
What are basins?
Basins are formed when a magma chamber deep underground empties (opposite of a dome).
What are the types of depositional hills and mountains?
Wind-formed, glacier-formed, and volcanic
Mountain
A natural elevation of the earth's surface rising to a summit; higher than hills as defined by local and historical traditions.
What is the relief of a region?
The relief of a region is the difference in height between the highest and lowest elevations of the terrain.
What are two examples of divergent landforms?
Rift valleys and fault-block mountains.
What are seamounts?
Seamounts are extinct volcanoes in ocean basins.
What is a moraine?
Moraines are long, relatively low ridges of glacial till that form mostly at the front and sides of glaciers.