Earth's interior
What is more dense, continental or oceanic crust?
oceanic
Which wave travels faster, P or S?
P-wave
What is the name of an area of volcanic activity that is not located on a plate boundary?
hot spot
name of the supercontinent
Pangaea
Mid-ocean ridges are found at what type of plate boundary?
divergent
What region has a pressure of 1 million atmospheres?
stiffer mantle
Data from how many stations is needed to calculate the epicenter of an earthquake?
3
What type of boundary is located on the west coast of the U.S.?
transform boundary
Evidence of drift is that the continents appear to _______
fit together like a puzzle
As the distance from the mid-ocean ridge increases, the age of the rock gets younger or older?
older
What region has an internal temperature of 6000 degrees C?
Outer core
How long does it take a P-wave to travel 3000 km?
5 minutes, 40 seconds
What type of boundary is located on the west coast of South America?
Convergent
Evidence of drift is that evidence of __________ is found in tropical areas
glaciers
What is the type of rock found at the mid-ocean ridge?
igneous
Which region contains convection currents of magma creating the Mid-Atlantic Ridge?
Asthenosphere (plastic mantle)
How far does an S-wave travel in 17 minutes?
6000 km
What type of boundary is located between the Antarctic plate and the Pacific plate?
Divergent
Geological evidence of drift is that similar rocks and mountain ranges are found in North America and ______
Europe
True or false - Trenches are found at the mid-ocean ridge.
False
Which region is inferred to be liquid at a depth of 4000 km?
Outer core
What type of wave can travel 4000 km in 7 minutes?
P-wave
At the Aleutian trench, what plate is subducting?
Pacific plate
Evidence of drift is that the same ____________ are found in South America and Africa
fossils
Evidence of seafloor spreading is the presence of ________ reversals in the rock.
magnetic