Vocabulary
Magma that breaks through to the earth's surface
Lava
A volcano that has not erupted in the past and is not expected to erupt in the future.
Extinct
What are the three different types of volcanoes?
Composite, Cinder Cone, Shield.
This is a pool of hot molten material under the earth's surface in the mantle.
Magma Chamber
Volcanic Rock is called
Igneous Rock
An Avalanche like emission of red-hot dust and gas that pours out of a volcano. Hurls down at up to 100 miles per hour.
Pyroclastic Flow
A volcano that is expected to erupt again.
Active
Which type of volcano is built by volcanic rock, made of tephra, and has highly explosive eruptions?
Cinder- Cone
This tube goes from the bottom to the top of the volcano and allows magma, gas, and rock to travel through and up and out of the volcano.
Vent
Two common types of igneous rock are
Obsidian and pumic
Tephra
A volcano that has erupted in the past, is currently inactive, and is not expected to erupt again.
Dormant
Which type of Volcano is tall with steep sides, has alternating layers of lava ash and rock, thick lava, and both mild and explosive eruptions?
Composite
This is the opening of the volcano
Crater
A hot spring that periodically blows hot steam and gas into the air.
A geyser
Water heated by magma under the earth.
Hot spring
Volcanic Fog
Vog
What type of volcano is wide and flatter, with slow flowing lava and nonviolent eruptions?
Shield
Side vent
How are a geyser and volcano similar?
They both are heated by magma under the earth and both erupt as a result of heat and pressure.
The area around the Pacific Ocean where most of the worlds volcanoes are.
The ring of fire
Mud and rock fragments that surge down a mountain when part of it collapses.
Debris Flow
This large, gradually sloping volcano has mild eruptions and a continuous flow of lava. Scientists will study the composition of the gathered lava.
Active shield volcano
An eruptions that flows through a side vent is called a _______
Flank Eruption
What is a mud pot?
A hot spring that is more mud than water.