Vocabulary
The thinnest layer of the Earth.
What is the crust?
Churning liquid metal layer is thought to create Earth's magnetic field.
What is the outer core?
Created the Continental Drift Theory
Who is Alfred Wegener?
Earthquakes and Volcanoes are usually located near these.
What are plate boundaries?
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary (also accept collision boundary).
A number of rigid, but moving, pieces of Earth's lithosphere.
What are tectonic plates?
The thickest layer inside the Earth.
What is the mantle?
Two continents that appear to fit together like puzzle pieces.
What is Africa and South America? (must say both)
The mid-ocean ridge is an example of what boundary type?
What is divergent boundary?
Hot air or liquid is less ________________ than cool air or liquid.
What is dense?
Alfred Wegener's theory continents have moved over time.
What is the Continental Drift Theory?
Plates float on top of this layer.
What is the asthenosphere?
Evidence of tropical plants were found on this polar continent.
What is Antarctica?
Name 3 of the major tectonic plates.
What is any of the following: N. American plate, S. American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate, Pacific plate
Occurs as a release from the build up of stress at a plate boundary.
What are earthquakes?
States that youngest rocks of ocean floor are at divergent boundaries, moving outward.
What is seafloor spreading?
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth).
What is the lithosphere?
Pangaea existed this many millions of years ago.
What is around 250 million years ago?
The mechanism (what causes) the plates to move.
What is convection currents in the mantle (or ridge push or slab pull)?
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary?
Although the hottest layer of the Earth, this layer is solid metal.
What is the inner core?
Type of lithospheric plate that will subduct, thinner and denser than the other type.
What is oceanic lithosphere?
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved?
Name the two types of convergent boundaries.
What is subduction (where volcanoes & trenches often occur) and collision (where mountains are usually formed).
Region most likely to cause major earthquakes we would feel in Salem, IL.
New Madrid fault zone