what three kinds of landforms are created by the eruptions of volcanoes? Name all.
There are 3 types of volcanic landforms: Cindercone, Shield, and Composite (Strato)
This dark cloudy material emits from volcanoes before and after large eruptions. It floats in the air like a cloud. What is it?
Ash/Ash Cloud
Pyroclastic flow that tumbles down the volcanic sides can move up to how fast?
200 mph
What is a vent? Where is it located?
Openings through which volcanic materials erupt are called vents. They are located near the peak of the mountain.
What is a hot spot?
A region of volcanic activity in the middle of a tectonic plate. Earth's crust at thinnest, large magma chambers are present and can create veins to pass magma through to the surface.
The tallest volcanoes on Earth are what type?
Shield volcanoes
What are craters?
Craters are bowl-shaped depressions. Forceful explosions may blow out the tops of mountains to form craters.
Anything erupted from volcanic vents/craters is referred to as what?
Pyroclast/Pyroclastic Flow
What prevents magma from gradually and slowly rising to the peak of the mountain?
The rocks above magma press down on the magma and create great pressure. When the pressure is released, volcanic materials suddenly erupt and move out to the surface.
Which type of volcanic landform is the most destructive?
Composite volcano. Mt. St. Helens is a composite volcano.
What is Ring of Fire and where is it located?
A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Basin.
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.
Chunks of rocks and heavy material blasted out of volcanoes during eruptions are called what?
Tephra