1. PLATE
TECTONICS
EARTHQUAKES B A C D 4 D B C A

2. SOL REVIEW….PLATE TECTONICS
Read each fact carefully and then be prepared to answer the questions that follow
NO TALKING
HIGHLIGHT WHAT YOU DO NOT KNOW
HERE WE GO

3. Hawaiian Islands were not created by plate movement but by HOT SPOTS
Oceanic Crust…thin, young & dense…sinks
Plate Tectonics
Continental Crust… thick, old & less dense…floats
Volcano & Earthquake locations were used to establish plate boundaries
3 Types of Plate Movement or Boundaries:
CONVERGENT
DIVERGENT
TRANSFORM
Ex.
San Andreas Fault
OLDEST Crust
Sea Floor
being destroyed here
YOUNGEST Crust
Sea Floor
being created here
Key words for each plate boundary include:
collision,→←, crashing, subduction zone
pulling apart,←→, sea floor spreading newest sea floor
sliding past each other,↑↓, strike-slip, earthquakes
Features created at each boundary include:
Mountains,
Volcanoes, Trenches,
Mid-ocean ridges,
Rift valleys & Volcanoes
Hawaiian Islands were not created by plate movement but by HOT SPOTS
Pangaea…one landmass

4. Earthquake Info: Plate Tectonics & Earthquakes
3 seismograph stations are needed to find the epicenter
Earthquakes occur when there is movement along a fault (crack)
Plate motion occurs as a result of convection in Earth’s mantle. Plate movement is driven by convection currents in the mantle.
Epicenter
Hot rises,
cold sinks
Earthquake & Volcanic activity is associated with all plate boundaries
Earthquake Info:
Ring of Fire: surrounds the Pacific Ocean Plate…high area of earthquake/volcano activity
P-Waves Arrive 1st & travel through solids and liquids
S-Waves arrive 2nd & travel through solids only…inner core of Earth is solid
Outer Core is Liquid
Epicenter (911) happens on the surface of the earth
Focus happens deep inside the earth…

5. Can you answer the following questions?
Which is the best evidence of crustal movement?
Molten rock in the Earth’s outer core
Titled sedimentary rock layers
Where are earthquakes most likely to take place?
Marine fossils found below sea level
Along the core-mantle boundary
Glacial striations found on bedrock
Which location is closest to the earthquake epicenter?
Where the composition of the Earth tends to be uniform
Near the Earth’s Equator
Near a fault zone A B C D
Where is the thickest part of the Earth’s crust?
At the edge of continental shelves
At mid-oceanic ridges
The igneous material along mid-oceanic ridges is found to be younger than the igneous material from the ridge. This fact supports the theory of
Under continental mountain ranges
Under volcanic islands
Continental Drift
Superposition
Seafloor spreading
Cross cutting

6. Can you answer the following questions?
Which location best represents plate movement along a diverging boundary? A B C D
Which diagram represents plate movement associated with transform faults such as those causing California earthquakes? A
Which diagram shows a subduction zone? B C D A B C D
Which diagram represents 2 continental plates converging? A B C D

7. Can you answer the following questions?
Movement of the crustal plates shown in the diagram is most likely caused by
The revolution of the Earth
The erosion of the Earth’s crust
The crust at the mid-ocean ridges is composed mainly of
Shifting of the Earth’s magnetic poles
Convection currents in the Earth’s mantle
Mid-ocean ridges such as East Pacific Rise and the Oceanic Ridge are best described as
shale
limestone
granite
basalt
Mountains containing folded sedimentary rocks
Sections of the ocean floor that contain the youngest oceanic crust
Moutains containing fossils of present day marine life

8. Can you answer the following questions?
Which seismogram was recorded at Tampa? A B C D
How many seismograph stations are needed to find the epicenter of an earthquake?
The primary cause of convection currents in the Earth’s mantle is believed to be the 1 2 3 4
Differences in densities of earth materials
Rotation of the Earth
Occurrence of earthquakes