Vocab
Section 1: Volcanoes and Plate Tectonics
Section 2: Volcanic Eruptions
Section 3: Volcanic Landforms
Section 4: California Geology
100
A weak spot in the crust where molten material or magma, comes to the surface.
What is a volcano?
100
lava
What is magma called when it reaches the surface?
100
The magma chamber, the pipe, and the vent
What are the parts of a volcano?
100
Shield volcanoes, cider cone volcanoes, and composite volcanoes
What are the 3 volcanoes?
100
Faults, volcanoes, mountain ranges, and basins
What features do plate movements make?
200
A molten mixture of rock forming substances, gases, and water
What is magma?
200
Aa and Pahoehoe
What are the 2 types of lava?
200
volcanic necks, sills, dikes, and batholiths
What land forms are formed by lava?
200
Plate movements push basins millions of years ago up
How do plate movements form basins
300
A steep, cone shaped hill or small mountain made of cinders, volcanic ash, and bombs.
What is a cinder cone?
300
An area where material from deep inside the mantle rises and then melts, creating magma.
What are hot spots?
300
Active, dormant, and extinct
What are the stages of volcanic activity?
300
When eruptions empty out a volcano, the mountain collapses inward to make them
How do calderas form?
300
Plate motion pushes up and folds the crust upward to form these.
What are mountain ranges and how are they formed?
400
A long tube in which magma moves from the magma chamber to Earth's surface
What is a pipe?
400
When oceanic plates collide, forming volcanoes
When do island arcs form?
400
Explosive and quiet
What are the 2 types of eruptions?
400
Dikes and sills
What are the two intrusions?
400
These are created when plates slide past each other, and the crust breaks.
How are new faults created?
500
A tall, cone shaped mountain in which layers of lava and ash alternate
What is a composite volcano?
500
They are located around plate boundaries
Where are most volcanoes located?
500
Compressed gas
What pushes magma out of a volcano?
500
Because volcanic soils are very rich in substances that plants need
Why are volcanic soils useful?
500
These form when a plate is subducted beneath another.
How are volcanoes formed?
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