Show:
Plate Tectonics
Mountains
Soil
Valleys and Weathering
Landforms
100
When two plates slide past each other, causing frequent earthquakes.
What is a transform boundary.
100
A mountain formed when two continental plates crash into each other and push upwards.
What are folded mountains.
100
What soil is a mixture of.
What is organic material, inorganic material, water and air.
100
A valley formed by glaciers, with a broad bottom and steep sides.
What is a U shaped valley.
100
A volcano very close to Portland that had minor eruptions as recently as 1805.
What is Mt. Hood
200
A subduction zone boundary.
What is a plate boundary where one plate slides under another.
200
A volcano.
What is a mountain formed when lava reaches the surface.
200
Topsoil is rich in this.
What is humus, or organic material.
200
A rift valley.
What is a valley caused by spreading plates or a divergent plate boundary.
200
Yosemite Valley
What is a U shaped, glacial valley
300
The mid atlantic ridge or the East African Rift are examples of this.
What is a divergent plate boundary.
300
A mountain formed by plates stretching and breaking, like silly putty.
What is a fault block mountain.
300
The three main ways humans destroy soil.
What is breaking up the structure, depleting nutrients and pollution.
300
The name for the process that breaks rocks down into smaller fragments.
What is weathering.
300
An example of a folded mountain, the highest on earth.
What is the Himalayas
400
The plate boundaries where mountains form.
What is subduction (volcanoes), convergent (folded) and divergent (fault block).
400
A mountain formed by magma that does not reach the surface.
What is a dome mountain.
400
The layer below topsoil, more mineral rich.
What is sub soil, or the B horizon.
400
A valley formed by a river.
What is a V shaped valley.
400
The destructive force that formed Cenotes, or caves in the limestone rock of the Yucatan in Mexico.
What is mechanical weathering.
500
The tallest mountain in North America
What is Denali, or Mt. McKinley (a dome mountain!)