Show:
What Causes Volcanoes?
Types of Volcanoes
Igneous Rock Features
Vocabulary
Grab Bag
100
Molten rock that has reached Earth's surface.
What is lava?
100
STEEP-sided, loosely packed volcano made of tephra.
What is a cinder cone volcano?
100
This is created when the top of a volcano collapses.
What is a caldera?
100
An opening in Earth's surface from which lava flows.
What is a volcano?
100
Mountain made of alternating layers of lava and tephra.
What is a composite volcano?
200
These islands were created from a "hot spot" located under the Pacific plate.
What are the Hawaiian Islands?
200
Shield volcanoes produce this type of lava.
What is silica-poor lava?
200
Bits of rock or solidified lava dropped from the air.
What is tephra?
200
Magma that has squeezed into vertical cracks and hardened.
What is a dike?
200
This class won the spirit banner for the month.
What is Miss Needham's class or Room 8?
300
A steep-walled depression around a volcano's vent.
What is a crater?
300
Magma that is low in silica produces this type of eruption.
What is quiet and non-explosive?
300
The largest intrusive igneous rock bodies.
What are batholiths?
300
Magma that has squeezed through horizontal cracks and hardened.
What is sill?
300
Give a compliment to the person sitting next to you. =)
If the whole class heard it, you get double the points.
400
This happens to lava that erupts from a volcano beneath the ocean.
What is it cools quickly by the water?
400
This type of volcano is a buildup of lava layers that form a BROAD volcano with gently sloping sides.
What is a shield volcano?
400
Erosion wears away the volcano and leaves this solid igneous core above the surface.
What is a volcanic neck?
400
Areas in the mantle that are hotter than other areas. These areas are not at plate boundaries.
What are hot spots?
400
Type of eruption produced by a shield volcano.
What is non-explosive?
500
Double Points: Two reasons volcanoes are related to Earth's moving plates:
What are 1) volcanoes form where Earth's plates are moving apart; 2) volcanoes form when plates move over "hot spots."
500
The three types of volcanoes:
What are shield, cinder cone, and composite?
500
Double Points: The difference between a caldera and a crater.
What is a caldera forms when the top of the volcano collapses and a crater is a depression around the volcano's vent?
500
The world's most active volcano.
What is Kilauea in Hawaii?
500
Double Points: This causes the top of a volcano to collapse and form a caldera.
What is the chamber in the volcano empties after an eruption and gravity forces the top of the volcano down?