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chapter 6.1
chapter 6.2
chapter 6.3
Chapter 6.4
Other highlighted words
100
What is the definition of magma?
the rock-forming substance, gas, and water that comes from a volcano.
100
What is the definition of lava flow?
The area covered by lava as it pours out of a vent.
100
What is the definition of a cinder cone?
a steep, cone shaped hill or small mountain of volcanic ash, cinders and bombs.
100
What is the definition of basin?
A broad bowl shaped valley.
100
What is a hot spot?
An area where magma from deep within the mantle melts through the crust above it.
200
How did the volcanoes in the Andes Mountains form?
The volcanoes in Andes Mountains are formed by collisions.
200
What is the definition of geyser?
A fountain of water and steam that erupts from the ground.
200
What is a volcanic neck?
a hardened magma in a volcano's pipe.
200
What is a Central Valley?
The large basin in California between the coast ranges and the Sierra Nevada.
200
What is a dormant volcano?
A volcano that is not currently alive, but that may become alive in the future.
300
Volcanoes are found beside the Earth's boundaries?
Volcanoes are found beside the Earth's boundaries
300
What happens when a volcano erupts?
The force of the expanding gases pushes magma from the magma chamber through the pipe until it flows or explodes out of the vent.
300
What land forms do lava and ash create?
These land forms include shield volcanoes, cinder cone volcanoes, composite volcanoes, and lava plateaus.
300
How does plate tectonics help to explain features of California's geology?
The movements of the pacific and North America plates produced California's major geological features.
300
What is a batholith?
A mass of rock formed when a large body of magma cools inside the crust
400
How do hot spot volcanoes form?
Above a hot spot when magma erupts through the crust and reaches the surface
400
What are a volcano's stages of activity?.
Geologists often use the terms ACTIVE, DORMANT, or EXTINCT to describe a volcano's stage of activity
400
How does magma that hardens beneath the surface create landforms?
Features formed by magma include volcanic necks, dikes, sills, and batholiths.
400
What mountain range began to be pushed upwards to the batholith?
The Sierra Nevada
400
What is a silica?
A material found in magma that is formed from the elements oxygen and silicon.
500
What features form the hot spot?
A magma that erupts through the crust and reaching the surface.
500
Which type of volcano is unlikely to erupt-a dormant or an extinct volcano?
An extinct volcano.
500
What are the three main types of volcanoes?
The three types of volcanoes are shield volcanoes, cinder cone volcanoes, and composite volcanoes.
500
What four features of California geology does plate tectonics explain?
Faults, volcanoes, mountain ranges and basins
500
What is a volcano?
A weak spot in the crust where magma comes or reaches the surface