MiStar Unit 7.2 Review: Volcanoes!

Scientific models are always drawn to scale.

Because of the long linear pattern of volcanic activity, Mount St. Helen's is in a region of

Old plate material is destroyed at

The semi-solid, thick, very hot layer beneath the crust.

The amount of tephra ejected during an eruption is measured by

Seafloor spreading occurs at

When energy flows out of a liquid, it decreases the temperature of the liquid so it can

Most volcanoes are found along tectonic plate boundaries

Melting occurs

The region beneath the crust where the mantle plume transfers thermal energy to the crust

The tectonic process in which one tectonic plate goes under another is called

Volcanoes are created because the __________ causes the flow of matter which creates volcanoes.

This is used to describe eruption size based on the volume of material erupted by a volcano.

Over millions of years, plate motion has drastically shifted the positions of Earths continents

When hot spots form under continental plates, they produce mostly light-colored rocks called

The force that causes the cycling of matter

Frequency is calculated by dividing the total amount of time a series of events occurred by the

Linear volcano patterns are created by both divergent and convergent boundaries.

The theory that the earth's crust is made of about a dozen tectonic plates that move is

New plate material is created at

Crystallization occurs at

A tectonic plate in which most of the crust the top rock layer is mostly land.

Plate material melts and becomes magma. When enough magma collects in the crust it's called a

upward flow of hot material within the mantle causing melting of the overlying plate.

Because Kilauea is in an isolated location in the middle of an ocean basin it is in a region of

a linear volcanic vent(s) through which lava/gases erupt, usually without explosive activity.

Lava is erupted when energy flows from the mantle to the crust causing the plate material to

the hardened rock that forms as a result of crystallization

to change a liquid material into a solid by removing or releasing thermal energy.

The movement of two tectonic plates toward each other

Volcanoes can only be found at tectonic plate boundaries

Tectonic plates move

The type of volcano commonly associated with converging plate boundaries is

Energy from the mantle moving towards the crust and escaping on Earth’s surface.

a steep-sided, often cone-shaped volcanic peak

A common feature found at diverging plate boundaries

Dark volcanic rocks are usually only from melting ocean materials. This rock type is called

How often or rarely an event occurs is called

Area on Earth’s surface with high thermal energy flow, and/or linear patterns of activity

a volcanic crater, formed by collapse of the volcano summit as the result of a major eruption

the movement of material from the mantle and the crust upwards, emitting on Earth’s surface

The flow of energy from the interior of the Earth causes which processes to occur?

A quantitative scale of explosivity is

Type of rock associated with diverging plate boundaries and fissure vent/shield volcanoes is

Type of rock associated with converging plate boundaries and stratovolcanoes is

Big eruptions occur __________ than smaller eruptions.

melted rock that is emitted from a volcano and flows onto the surface

The movement of two tectonic plates away from each other

Volcanoes that form by hot spot volcanism can only occur in the ocean.

The Ring of Fire is a region of change that borders

The solid surface of the Earth (including the seafloor beneath the oceans).

Area on Earth’s surface with little thermal energy flow, away from linear patterns of activity

The type of volcano commonly associated with diverging plate boundaries is

Volcanologists use models that exaggerate components/interactions underneath Earth's surface

the denser tectonic plate that usually subducts underneath the less dense plate.

a vent or opening on a volcano that releases high temperature steam and gases