Earthquake
Earth
Earth
Earth
Landform
100
What city in California was devastated by an earthquake in 1906?
San Francisco
100
What is the mantle made up of?
rock and magma
100
What type of mountain is formed when rock strata is forced upwards and creates mountains with sharp peaks?
fold
100
What is the earth's deepest trench?
Mariana Trench
100
Teton Mountains in Wyoming are examples of what type of mountains?
block-fault mountains
200
What kind of waves are bursts of energy caused by earthquakes or man-made explosions?
seismic waves
200
What was the magnitude of the 1906 Great Earthquake in California on the Richter Scale?
8.2
200
What plates are pushing against each other to create the Rocky Mountains?
Pacific Plate and American Plate
200
What do you call the best known seismograph?
Richter Scale
200
When rocks slip downward because of pressure of colliding plates, what type of landforms are formed?
deep rifts or trenches
300
What does the center of the earth mostly made up of?
iron and nickel
300
How many major pieces of tectonic plates does the earth's crust have?
14
300
Rocky mountains are examples of what kind of mountain?
fold
300
What do you call the "cracks" that are formed when plates split?
faults
300
Most earthquakes happen along the fault between two _________________ ______________ (2 words)
tectonic plates
400
What do you call the extremely hot, molten liquid that surrounds the inner core?
magma
400
What are created if plates run or collide into each other?
mountains and mountain ranges
400
What is created when two plates are rubbing each other?
fault
400
The most destructive type of earthquake registers a magnitude of ______________ _______________on the Richter scale.
over 7
400
What do you call the starting of an earthquake?
epicenter
500
How many miles below the earth's surface does this inner outer core lies?
3000
500
Scientist believed that at one point all the land masses are connected. What do you call this large land mass?
pangaea
500
What are created when the ocean's crust pushes against a continental plate?
trenches
500
What type of mountains have flat-top or jagged peaks and are formed when the rock is forced upward?
block mountains
500
What does the Richter scale measure?
the strength and magnitude of an earthquake
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