Faults
Types of Stress
Volcanoes and Quakes
Vocabulary
Vocabulary
100
This type of fault has the same structure as a normal fault, but the blocks mvd in the opposite direction.
What is a reverse fault?
100
The stress force that pulls on the crust, stretching rock so that it becomes thinner in the middle is called this.
What is tension?
100
This is where volcanoes are most likely to form.
What is where tectonic plates meet other plates?
100
Compression, tension and shearing are three types of this.
What is stress?
100
The Hawaiian Islands were formed as the Pacific Plate drifted over this.
What is a hot spot?
200
Tension in Earth's crust pulls rock apart forming this type of fault.
What is a normal fault?
200
The stress force that squeezes rock until it folds or breaks is called this.
What is compression?
200
This is why California has more earthquakes than Massachusetts.
What is it is locates on a boundary of two plates?
200
Once magma reaches the surface it is called this.
What is lava?
200
Volcanic belts form along the boundaries of this part of Earth.
What is plates?
300
This fault is created when plates move past each other.
What is a strike-slip fault?
300
The stress that pushes a mass of rock in two opposite directions is called this.
What is shearing?
300
Earthquakes are caused by sudden shifts in this layer of the Earth.
What is the crust?
300
Magma rises to the surface because it is ________ dense than solid rock.
What is less dense?
300
At converging boundaries, the older more dense plate sinks under the less dense plate creating this.
What is an island arc?
400
In a normal fault, the fault is at an angle, son one block of rock lies above the fault, called this.
What is a hanging wall?
400
These three things work over millions of years to change the shape and volume of rock.
What is tension, compression and shearing?
400
The point beneath Earth's surface where the crust breaks and triggers an earthquakes is called this.
What is the focus?
400
This is a belt of volcanoes around the rim of the Pacific Ocean.
What is the Ring of Fire?
400
At these boundaries, volcanoes form along the mid-ocean ridges.
What is a divergent?
500
In a normal fault, the fault is at an angle, so one block of rock lies below the fault, called this.
What is a footwall?
500
The slow shift of Earth's plates causes this.
What is changes in Earth's crust?
500
The point on Earth's surface directly above an earthquake's focus is called this.
What is the epicenter?
500
The molten mixture of rock-forming substances, gases, and water deep in Earth's mantle is called this.
What is magma?
500
At these boundaries, the older more dense plate sinks under the less dense plate.
What is convergent?
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