In divergent boundaries, long mountain chains under the water is called_______?
mid ocean ridges
100
When the volcano erupt, where does the lava pour out?
Summit crater or vent
100
What type of volcano is Mauna Loa, and where is it located?
Mauna Loa is a shield volcano, and it is located in Hawaii. (It is one of the volcanoes that forms the Island of Hawaii.)
200
When the tectonic plate move apart, a set of deep particle fractures called what form?
fissures
200
What are some of the things that fly out when a volcano erupt?
Lava, ashes, cinders, lapilli, volcanic blocks, volcanic bombs, and gasses.
200
Why are shield volcanoes spread out over a wide area?
The lava is thin and runny, so it travels long distances. As a result, it cools and hardens away from the eruption site, creating a broad base and gently sloping sides.
300
Describe a hot spot.
A hot spot is an ever changing chain of active volcanoes found on the Hawaiian islands.
300
What element makes volcanic eruption violent?
Silica or silicon/oxygen
300
Why do composite volcanoes have alternating layers of pyroclastic material and lava?
Composite volcanoes from from both explosive eruptions of pyroclastic material and quieter flows of lava.
400
Magma may also contain ________, _________ and sometimes _______.
suspended crystals, dissolved gas, and sometimes gas bubbles
400
What is a lava burp?
Lava burp is the force of a bursting gas bubble pushing up a sheet of red hot lava. An example of this eruption is the eruption of Mt. Kilauea.
400
Mount Shasta is a composite volcano that has erupted at least once every 600 to 800 years for the past ______ years.
10,000
500
What are the two types of plate boundaries and what are their characteristics?
The two plate boundaries are divergent and convergent. Divergent boundaries are when two tectonic plates pull apart and they form mid ocean ridges. Convergent plates are tectonic plates or fragments of the lithosphere move toward one another and collide.
500
Who is Pele and what is Pele’s hair?
Pele is the fire goddess of volcanoes according to Hawaiian legends. She lives in volcanoes and when she is mad, she makes the volcano erupt. Pele’s hair is a type of rock formed from lava. Each of these strand is as fine as spun glass.
500
What type of volcanic landform did the Paricutin build, and how tall was it? (How tall was the landform that was created?)
Paricutin erupted in 1943 in a farmer's cornfield. The volcano built up a cinder cone about 400 meters high.