Forces in Earth's Crust
Earthquakes & Seismic waves
Volcanoes & Plate Tectonics
More About Volcanoes
Potpourri
100
Stress is a force that adds this potential power to rocks.
What is adds energy to rocks?
100
Ground movements that are caused by a sudden release of energy when rocks along a fault move.
What is an earthquake?
100
These are areas where hot spots may be located.
What is in the middle of plates or on/near plate boundaries?
100
This is a vent in Earth's surface through which magma and gases are expelled.
What is a Volcano?
100
This is the difference between magma and a lava.
What is magma is what molten material is called when it is inside a volcano and lava is what it is called when the magma erupts onto the Earth's surface?
200
This type of stress produces a strike-slip fault.
What is shearing?
200
Where do most earthquakes occur?
What are along plate boundaries?
200
If the magma chamber below a volcano empties, the volcanic cone may collapse and leave this large, basin-shaped depression.
What is a caldera?
200
This is where volcanic belts form.
What is along plate boundaries?
200
A volcano is likely to erupt in this manner if it has magma that is low in silica content.
What is it will experience a quiet eruption?
300
This type of fault occurs when the hanging wall is moved so that it lies above the footwall.
What is a reverse fault?
300
This is the difference between a seismograph and a seismogram.
What is a seismograph is an instrument that records vibrations in the ground; a seismogram is a record of earthquake's seismic waves that is recorded by a seismograph?
300
The viscosity of magma depends upon these 2 components.
What are temperature and silica content?
300
This is what causes small earthquakes to occur before an eruption.
What is the upward movement of magma?
300
This type of volcano is formed when only solid fragments build up around it's vent.
What is a cinder cone volcano?
400
This type of stress occurs along mid-ocean ridges.
What is tension?
400
This type of seismic wave moves slower than P or S waves, but causes the most damage.
What is a surface wave?
400
This string of volcano islands forms along subduction zones.
What is an island arc?
400
A composite volcano experiences volcanic activity of this kind.
What is both quiet and explosive eruptions?
400
These can be used to identify a substance or predict how it will behave.
What are physical and chemical properties?
500
This type of stress may act to change Earth's surface by creating these 2 types of folds in rock.
What are compression; anticlines; and synclines?
500
A geologist must plot these to determine the epicenter of an earthquake.
What is use data from 3 different seismographs plot three circles on a map to see where they intersect?
500
This describes how the subduction process forms volcanoes at converging plate boundaries.
What is plates collide, one plate goes under another causing it to melt, forming magma. The less dense magma rises to the surface at weak spots in the crust creating volcanoes.
500
This is why different liquids have different viscosities.
What is some liquids have a greater degree of friction between the liquid's particles?
500
This can be a source of energy for people who live near volcanoes.
What is geothermal energy?
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