Volcanoes

What is the world's most active volcano?

A vent in Earth's Surface made of lava and volcanic ash, which erupts and builds up

A magma’s viscosity is directly related to its ____.

As the temperature of lava increases,its viscosity_____.

piece of semi-molten rock ejected as glowing lava is a ____.

The particles produced in volcanic eruptions are called ____.

Large particles of hardened lava ejected from a volcano are called ____.

What is the most abundant gas associated with volcanic activity?

What type of volcano is built almost entirely from ejected lava fragments?

The broad, slightly dome-shaped volcanoes of Hawaii are ____.

A volcano that is fairly symmetrical and has both layers of lava and pyroclastic deposits is a ____.

What plays a major part in determining the form of a volcano?

The most violent volcanic eruptions are associated with what type of volcano?

Magma forms when solid rock in the crust and upper mantle ____.

Magma tends to rise towards Earth’s surface primarily because ____.

Most of the active volcanoes on Earth are located in a belt known as the ____.

A material’s ____________________ is a measure of its resistance to flow.

The change in temperature with depth is the ____________________ gradient.

A large depression in a volcano after it collapses into the magma chamber

The volcanic landform that is formed when the volcanic pipe remains after most of the
cone has been eroded is called a ____.

Structures that form from the cooling and hardening of magma beneath Earth’s surface are ____.

The largest intrusive igneous formed when the magma chamber cools is called a ____.

Which type of intrusive feature forms when magma is injected into fractures cutting across
preexisting rock layers?

What commonly horizontal intrusive igneous body is formed when magma is injected parallel to
sedimentary bedding planes?

Some magma that forms a sill may continue to push the rock layers upward, forming a dome shape called a