Vocabulary
List the 6 layers of the Earth from the inner core outward. Be sure to include lithosphere and asthenosphere.
Inner core, outer core, lower mantle, upper mantle (asthenosphere), lithosphere (comprised of part of the mantle and the crust)
Created the Continental Drift Theory
Who is Alfred Wegener (+ 50 if pronounced correctly - "V"egener
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
A number of rigid, but slowly moving, pieces of Earth's surface
What is tectonic plates.
The greatest volume layer of the Earth
What is the mantle. Although the core is actually thicker (2200 miles compared to 1800 miles)
Describe the fossil evidence found which supports the continental drift theory
What is fossils of the same animal or plant found in two or three different contintnts (such as Africa and South America) though they are now thousands of miles apart.
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading occurs
Oceanic crust is more ________________ than continental crust
What is dense
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
Plates float on top of the _______________________.
What is the asthenosphere
Evidence of tropical plants were found on this icy continent
What is Antarctica
Name four of the major plates
What is any of the following North American plate, South American plate, Eurasian Plate, Indo-Australian plate, African plate, Antarctica plate, Pacific Plate
_________________ are a result from the build up of stress at a plate boundary.
What is 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 a small portion of 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 (200 - 300 - ok)
This is the mechanism which causes the plates to move?
What is convection cycles in the mantle (or better: asthenosphere)?
Need both for 400 pt. Just convection currents -> 200 pt
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
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
The three types of convergent boundaries
What is
oceanic-oceanic
continental-continental
oceanic-continental
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
Who is Harry Hess!
(It's in your books.)