Volcanoes
Seafloor Spreading
Land Formations
Seismic Waves
100

What is the name of the molten rock that reaches the surface and erupts from a volcano?

What is lava?

100

What geological feature forms at mid-ocean ridges?

What is new oceanic crust?


100

What type of formation creates new oceanic crust?

What is an Oceanic-Oceanic Divergent boundary?

100

What are the two main types of seismic waves?

What are P-waves and S-waves?

200

What is the name of the location at which magma is stored prior to an eruption?

What is the Magma Chamber?

200

Which scientist proposed the theory of plate tectonics that includes seafloor spreading?

Who is Harry Hess?

200

What type of boundary produces the most earth quakes?

What is a transform boundary?

200

Which type of seismic wave travels the fastest?

What are P-waves?

300

What is magma stuck in between layers of rock called?

What is Sill?

300

How do magnetic stripes on the ocean floor provide evidence for seafloor spreading?

What is they show patterns of magnetic reversals?

300

What type of land formation is produced at a Continental-Continental Divergent Boundary?

What is a rift valley?

300

How do scientists use seismic waves to locate the epicenter of an earthquake?

What is by measuring the difference in arrival times?

400

What is the term for a volcanic eruption that is explosive and produces ash and pyroclastic flows?

What is a stratovolcano eruption?

400

What is the name of the process that occurs when tectonic plates pull apart?

What is divergent boundary formation?

400

Where is the most famous rift valley in the world located?

What is East Africa?
400

What is the name of the instrument used to measure seismic waves?

What is a seismometer?

500

Name one type of volcano that is characterized by its broad, gently sloping sides.

What is a shield volcano?

500

What evidence suggests that seafloor spreading is occurring?

What are age differences in oceanic crust?

500

Describe Subduction and what causes it.

Open response

500

What type of wave is an S wave?

What is a Transverse Wave?