Show:
Waves
Plate Boundaries
Interior of Earth
Earthquakes
1989 Earthquake
100
What states of matter do P waves travel through?
solids and liquids
100
Name three plate boundaries.
convergent - divergent - transform
100
Name the layer of earth that has convection currents, which causes the plates to move.
asthenosphere
100
What is an earthquake and how does it form?
TBD
100
Where did the 1989 earthquake occur?
Northern Cali
200
What are the fastest waves?
p waves
200
Explain the movement of all three plate boundaries.
show on the board
200
What layer are the plates?
lithosphere
200
What is the source of an earthquake?
focus
200
What fault line causes this earthquake?
San Andreas Fault
300
What do secondary waves travel through?
solids
300
What causes earthquakes?
Plate movement
300
The center of earth is the heating source for convection currents. TRUE or FALSE
True
300
What is the difference between the focus and the epicenter?
focus: source of earthquake (underground) ... epicenter: point on the surface directly above the focus
300
What was the magnitude of the earthquake? (approximately)
6.9-7.1
400
Which waves are the most distructive
L waves
400
The Mid Ocean Ridge is a _____________ boundary.
Divergent
400
What is the core made up of?
iron and nickel
400
Which wave can travel through both solid and liquid?
p-waves
400
Where was the epicenter of this earthquake?
Loma Prieta
500
Name all three waves and explain each
TBD
500
How does a trench form?
Subduction zone.... convergent boundary
500
What state of matter is the inner core?
solid
500
What is used to measure the magnitude of an earthquake?
seismograph
500
What sporting event was taking place on this date? What teams were in the event?
1989 World Series............ Oakland Athletics and San Francisco Giants