Earthquakes
What is the Epicenter?
The pt. directly above the focus on the Earths surface
How do plates move in a convergent boundary?
towards each other
Which layer of the earths interior is a liquid?
Outer Core
P-wave: 08:46:20
S- wave: 08:54:40
Lag time:?
00:08:20
scientist who proposed theory
Alfred Wegener
S- Wave stands for?
Secondary waves
How do the plates move in divergent boundaries?
Away from each other
Which has a higher density Continental or Oceanic?
Oceanic
P- wave travel time: 00:10:20
Distance: ?
6800km
name of supercontinent
Pangaea
Which wave is longitudinal?
P-Wave
Which convergent boundary forms mountain ranges?
Continental- Continental
What layer of the Earth has a density of 4.8 g/cm^3?
Mantle
Distance: 8,000km
S-wave travel time?
00:20:40
What plate boundary exists where the North American plate meets the Pacific plate?
Transform
Which wave has a faster arrival time?
P-waves
what plate is at 40 E 30 N?
Arabian Plate
How do we know the characteristics of Earth's interior?
By studying the movement of seismic waves
S-Wave travel time: 00:13:40
P-Wave travel time: ?
00:07:39
What plate boundary exists at 80 East, 30 North?
convergent
Whats the relationship between time and the epicenter distance?
As time increases, the distance from the epicenter increases
What type of boundary is at 45 W 60 S?
Transform Boundary
How thick is Earth's inner core?
1,228 km
P-Wave: 08:55:20
S-wave: 08:57:00
Lag Time?
00:01:40
3 pieces of evidence for continental drift
continental puzzle pieces, matching fossils on opposite continents, coal in Antarctica