Structure of Earth
The outermost layer of the earth.
What is the crust?
These mountains are formed when molten rock erupts from a hole in the crust.
What are volcanoes?
The 3 types of faults we discussed in class.
What are normal, strike-slip, and thrust (reverse)?
This instrument measures seismic waves.
What is a seismograph?
The 3 types of volcanoes we discussed.
What are shield, composite (strato), and cinder-cone?
The boundary between the crust and the mantle.
What is the Moho?
The four types of mountains we studied.
What are folded, fault-block, volcanic and domed?
Occurs when rocks along one side of a fault sink vertically.
What is a normal fault?
The point on the surface directly above where an earthquake starts.
What is the epicenter?
This type of volcanic eruption is considered gentle and is formed by many layers of runny lava.
What is shield?
The boundary between the mantle and the core.
What is the Gutenburg?
The type of mountain formed when the edges of two layers of rock are pushed together causing the layers to buckle.
What are folded?
The famous San Andreas fault in Western California is this type.
What is a strike-slip?
The most active earthquake zone in the world where 80% of all earthquakes occur.
What is the Circum-Pacific Belt?
Paralleling the Circum-Pacific Belt, this volcanic belt contains more than 1/2 the world's active volcanoes.
What is the Ring of Fire?
What are seismic waves?
What are volcanoes?
Occurs when rocks on one side of a fault are shoved on top of rocks on the other side of the fault.
What is a thrust (reverse) fault?
The direction of movement in a strike-slip fault.
What is horizontal?
The source of volcanic eruptions.
What is the magma chamber?
The core is thought to be solid and made of either of these two elements.
What are nickel and iron?
A volcano taller than Mauna Kea.
What is Olympus Mons on Mars?
This is the theory that describes rocks on either side of a fault springing back to a position of little or no strain and triggering an earthquake.
What is the Elastic Rebound theory?
What are the mid-ocean ridges (rift zones)?
This type of volcano is formed by alternating layers of rock layers and lava.
What is composite?