Volcanoes 1
What is the dust and ash coming out of the tops of volcanoes called?
What is an ash cloud.
Where is magma located in a volcano?
Under the crust of the Earth
Explain where the main vent in a volcano is located.
The center of the volcano.
Name 3 of the different types of volcanoes.
What is Shield Volcano, Composite Volcano, and Cinder Cone Volcanoes.
Also: lava plateaus, caldera (types of volcanic landforms)
_________ is a molten mixture of rock-forming substances, gases and water from the mantle; when it reaches Earth’s surface it is called lava
What is magma.
________ is a huge hole left by a collapse of a volcano.
What is caldera.
What are some destructive effects of volcanoes?
What is destroying animal habitats, destroying cities and communities, destroying animals, crops and people.
What are some constructive effects of volcanoes?
What causes volcanoes?
What is when fractures in the Earth's crust allow magma to reach the surface.
A ________ is a weak spot in Earth's crust where molten material, or magma, comes to the surface.
What is volcano.
A ______ ______ is a high, level area built up over time from seeping out of several cracks, traveling a distance and solidifying.
What is lava plateau.
_________ is molten rock on Earth's surface.
What is lava.
Fractures in Earth's crust allow magma to reach the surface causing ___________.
What are volcanoes.
The _____________ is a volcanic belt consisting of volcanoes and earthquakes located at the rim of the pacific boundary, caused by the diverging and converging of plates in that area.
What is The Ring of Fire.
At plate boundaries, the crust often fractures due to diverging or ________ plates.
What is converging.
A __________ volcano is tall and formed of alternating layers of ash and lava; shoots out lava and rock fragments, forming a high, towering mountain.
What is composite.
________ is molten rock beneath Earth's surface.
What is magma.
An ________ volcano is not likely to erupt again.
What is extinct.
A ________ volcano is where lava flows out freely from a vent, building a wide, gently sloping mountain.
What is shield volcano.
An __________ is a string of islands created by volcanoes near boundaries where two oceanic plates collide and one sinks beneath the other.
What is island arc.
A _________ volcano's lava has high viscosity and produces ash, cinders and bombs that build up a steep hill.
What is cinder cone volcano.
A _______ _________ is when magma with trapped gasses build up pressure and explode with incredible force.
What is explosive eruption.
A ______ ______ is an area where material from deep within the mantle rises then melts, possibly forming a volcano where magma erupts through the crust.
What is hot spot.
A ________ _________ is when magma flows easily with gasses bubbling out gently and quietly.
What is quiet eruption.
The causes of the rising of hot ash clouds are ________ of heated air, upward force of the volcanic eruption, density differences between ash and air.
What is convection.