Earth's Structure
The layer of earth also known as the surface
The Crust
The name of the man who developed/published the hypothesis of the continental drift
Alfred Wegener
The higher the number on the Richter scale, the MORE or LESS catastrophic the earthquake
MORE catastrophic
The name of a famous volcano that erupted in the USA
Mount St. Helens
The type of wave that travels ONLY through solids
The S-wave
The main element that makes up earth's core
Iron
The supercontinent earth was proposed to have been before the continental drift was called
Pangea
Another term (from the text) that describes the cracks where earthquakes occur
Faults
The three types of volcanoes
Cinder cone, composite, and shield
A boundary in which the plates move horizontally past each other
Transform boundary
The rigid upper mantle combined with the crust make up the
Lithosphere
Two continents, with similar fossils, that provide evidence of plate tectonics:
Africa and South America
The rock above the fault is known as the
Hanging wall
The layers of a volcano are made up these two things (emitted by the volcano)
lava and ash
A boundary in which the plates come together
convergent boundary
Which layer of earth is the least dense?
The crust, that's why it is our planet's outer layer
The denser of the two crusts (oceanic or continental) is
Oceanic
Tension (or pulling) forces produce a certain type of fault which is-
a normal fault
Magma in a volcano travels up a long pipe called a _______,toward the surface.
conduit
A wave that travels parallel to the direction of motion
Primary (or P) Wave
The title of the piece of the mantle located below the lithosphere
Asthenosphere
The boundary (or boundaries) that may be found on land AND in the ocean
Divergent, convergent, and transform (All three)
Earthquakes cause more damage with a (shallow OR deep) focus
shallow
A mixture of deadly gases and ash that race down the flanks of a volcano
Pyroclastic flow
The fault type when the hanging wall moves UP is called...
Reverse fault