Plate Tectonics
What are the forces present at each boundary:
Convergent-
Divergent-
Transform-
Compression
Tension
Shear
What are lava flows?
Long streams of molten rocks
Where do most earthquakes usually occur?
Along plate boundaries
What are the agents of erosion?
Water, ice, and wind.
The moving of weathered materials, or sediment, from one location to another
Erosion
What geological evidence is there to support the theory of plate tectonics?
Rocks that are made of similar substances and mountains that formed at similar times are present on continents that are now far apart
Where can volcanoes form?
Divergent or convergent boundaries or hotspots
Name 3 earthquakes?
Prince William Sound, Valdivia, Tohoku, etc.
What does soil consist of?
Weathered rock, mineral material, water, air, and organic matter from the remains of organisms.
The process of changing the composition of rocks and minerals by exposure to water and the atmosphere
Chemical Weathering
What is the theory of plate tectonics?
The theory of plate tectonics states that Earth's crust is broken into rigid plates that move slowly over Earth's surface
What is an example of a cinder cone volcano?
Mt. Edna
How do earthquakes change Earth's surface?
They can create landforms, such as faults or mountains
The Mississippi River deposits sediment into what sedimentary basin?
The Gulf of Mexico
Small pieces of lava
Volcanic Ash
What in the mantle causes the crust to move?
Convection currents
What type of eruptions do the following types of volcanoes have:
Shield-
Cinder cone-
Composite-
Non-violent eruptions
Violent eruptions
Violent and Non-violent eruptions
In the winter of 1811-1812 how many earthquakes appeared in Missouri?
What three factors affect soil formation?
The type of rock being weathered, the biological activity, and the climate.
Hot Spots
Who and developed the theory of continental drift and when?
Alfred Wagner in 1912
Approximately how many active volcanoes are there?
1,500
How long is the San Andreas Fault?
1,000 km long
Limestone dissolves much faster in _____ _______ than _______ _______
Limestone dissolves much faster in acidic water than nonacidic water.
A large depression in the center of a volcano
Caldera