volcanic features
An opening in Earths surface through which volcanic material erupts
What is Vent?
the mixture of hot gases, ash cinders, and bombs that flow down the sides of a volcano when it erupts explosively
What is pyroclastic flow?
What three kinds of landforms are created by the eruptions of volcanoes? Name all three
What is cindercone, shield and composite
a hole left when a volcano collapses
What is caldera?
This Italian volcano destroyed the city of Pompeii in 79 AD
This is the bowl shaped area that forms around the volcanos vent
what is a crater?
what are dormant volcanoes?
these volcanoes have become inactive, but not certain to erupt again
Mass of a rock formed when a large body of magma cools inside the crust
what is a batholith
When a volcano erupts, it can send out hot melted rock that flows down the sides and can burn everything in its path. This melted rock is called what?
What is lava?
Where do most volcanoes occur
Most volcanoes occur along the boundaries between shifting tectonic plates.
This is a high level area formed by rising underground lava
What is a lava plateau?
the type of rock that's formed when lava cools and hardens
what is an igneous rock?
what type of volcanic mountain is composed of layers of lava that alternate with layers of ash?
Volcanic eruptions can cause these ocean waves if they happen near water.
What are tsunamis
Why does magma rise?
magma rises because it is filled with gas and is less dense then the solid rock around it.
This is a crack that lava flows out which is not the main vent
what is the side vent?
How do magma chambers and the earths internal heat contribute to eruptions?
Earths internal heat generates magma which them accumulates in magma chambers and eventually leading to eruptions.
These are smaller bodies of magma that form a feature by forcing layers of rock to bend upward.
What is a dome mountain?
How do hot spots form new land? Name a landform created by hot spots
Hot spots erupt and release magma. As magma comes out it becomes lava and hardens into landforms. Hawaiian islands are created by hot spots.
This is when magma heats water underground and it is trapped
what is a geyser?
Define Subduction Zone. Where is it located?
Subduction occurs when two plates collide. The denser and heavier pate slides under the other plate and becomes part of the mantle.
What tools and techniques do scientists use to monitor volcanos and future eruptions.
what is seismometers and tiltmeters
This landform is formed by lava flows that spread out in broad, gently sloping layers, creating large, shield-like volcanoes.
What is a shield volcano?
chain of islands formed by volcanic activity when one oceanic plate is forced under another, causing magma to rise and create volcanoes.
what is an island arc?
This hot spot volcano chain in the Pacific formed as the Pacific Plate moved over a stationary magma source.
What is Hawaiian islands