Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
100
What are earthquakes mainly caused by?
Sudden release of energy when movement occurs along faults (or cracks) in the Earth's Surface
100
Write what you know about P-Wave earthquakes moves and where it travels
moves: pushes and pulls
Travels: through the body of the earth
100
High silica magma is ________ and creates ________ eruptions, this type of magma also flows _________________.
Sticky, Explosive, slowly (high viscocity)
100
What is happening to the earth's plates at the Mid-Atlantic Ridge?
Two oceanic plates are spreading apart causing new ocean floor to be created.
100
Why do earthquakes occur along a fault like the San Andreas fault?
Because the stress that builds up along plate boundaries where rocks move.
100
Name three pieces of evidence scientists have to support the idea that the continents were once one large landmass?
1. Animal and plant fossils matched up on continents separated by oceans.
2. Mountain ranges and rock types lined up on separate continents.
3. The shapes of the continents seemed to fit together like puzzle pieces.
200
What time did the earthquake reach Richmond?
10:10
200
Write what you know about S-wave earthquakes move and where it travels
moves: Side to Side
Travels: through the body of the earth
200
Low silica magma ____________ and creates _______ eruptions, this type of magma flows ______________________.
thin and runny, quiet, easily/quickly (low viscocity)
200
What is happening ot the earth's plates the Himalayan Mountains?
two continental plates are colliding causing mountains to be pushed up
200
Why do you think there are so many ridges and cracks along the San Andreas Fault?
Ridges form as a result of hundreds of movements along the fault.
200
What is the name of the large landmass where the continents were connected?
Pangea
300
Which city is farthest from the earthquake and why?
Honolulu, the waves reached there last, they look longer to get there.
300
Write what you know about surface wave earthquakes moves and where each one travels
moves: side to side
travels: On the surface of the earth
300
What is the official name of the Ring of Fire?
Circum-Pacific Belt
300
What is happening to the earth's plates at the Japan Trench?
One oceanic plate is moving beneath a continental plate (subduction) creating a trench
300
Label the layers of the earth starting from top to bottom:
Inner Core
Outer Core
Mantel Crust
300
What caused the landmass "pangea" to separate?
The seafloor spreading of mid-ocean ridges has caused the large landmass of Pangea to separate.
400
What type of wave is represented?
P-wave
400
Which seismic belt has the most volcanic/earthquake activity? What type of plate movement is most responsible for this activity along the seismic belt?
The Ring of Fire/Circum-Pacific Belt has the most volcanic/earthquake activity. Convergent boundaries (plates colliding/subduction zones) are most responsible for the increased activity along this seismic belt.
400
What are the 3 ways in which the earth's plates move.
Convergent - Collide
Divergent - separate/divide
Transform - slide past one another
400
What is happening to the plates along this fault? (be specific - tell which direction they are moving)
The plates are sliding past each other, North American Plate is sliding south, the Pacific plate is sliding north.
400
What makes up the Lithosphere
Crust and the uppermost rigid part of the mantle.
500
What type of wave is represented?
S-wave
500
What is the difference between the magnitude and intensity of an earthqake?
Magnitude is the amount of energy released by the earthquake and intensity is the amount of damage caused by the earthquake.
500
How do Mountains form? 3 ways
1. When two continental plates collide at convergent boundaries
2. At divergent boundaries where rift valleys or mid-ocean ridges form (separate/divide)
3. At subduction zones where volcanic mountains and islands form (convergent boundaries)
500
What is happening to the path of Wallace Creek?
The movement of the plates has bent the path of Wallace Creek.
500
How do scientists know the inside of the earth is made up of layers?
Scientists use earthquake waves to map the structure of the inside of the earth. Different waves act differently as they travel through different layers of the earth. Scientists know that the outer core is liquid because s-waves do not travel through liquids