Pacific Area
Dangerous Eruptions
Eruptions
Parts of a Volcano
Grab Bag
100

Hawaii is home to Mauna Loa and Kilauea, which are both this type of volcano.

What is a shield volcano?

100

These are the smallest volcanoes, which have steep slopes and are made up of chunks of rock.

What are cinder cones?

100
When molten rock is underground, this is what it is called.

What is magma?

100

This the opening at the top of volcanoes.

What is the vent?

100

This is a liquid's resistance to flow.

What is viscosity?

200

Hawaii is located on the Pacific plate, which moves over this, creating the volcanic islands.

What is a hot spot?

200

Mt. St. Helens is an example of this kind of volcano.

What is a composite volcano?

200

When molten rock reaches the surface, this is what it is called.

What is lava?

200

This is the area underground that stores the molten rock.

What is the magma chamber?

200

When a volcano has stopped erupting and will never erupt again, we call it this.

What is extinct?

300

The Pacific Ocean is surrounded by this, the area where most volcanoes on the planet are found.

What is the Ring of Fire?

300

Cinder cones are have this type of eruption, and typically can only survive erupting once.

What are explosive eruptions?

300

This is what we called the material that comes out of a volcano during an eruption.

What is pyroclasts?

300

This is the pathway underground that the molten rock flows through to the opening at the top.

What is the conduit?

300

When a volcano is not currently erupting but has "recent" activity, we call it this.

What is active?

400

Volcanoes form at different boundaries around the Ring of Fire, except for this boundary type.

What is Transform Boundaries?

400

Neither composite volcanoes or cinder cones have this kind of eruption, in which lava flows out slowly.

What is effusive?

400

These volcanoes have the biggest eruptions, being the most explosive.

What are composite volcanoes?

400
Shield volcanoes are made of this, which layers up and solidifies as they erupt.

What is lava?

400

This is a divergent boundary in the Atlantic Ocean where many volcanoes can be found.

What is the Mid-Atlantic/Mid-Ocean Ridge?

500

Volcanic eruptions in Hawaii are not explosive, but effusive. The lava from these eruptions could be described as having this.

What is low viscosity?

500

Because composite volcano magma has high amounts of ___________, the magma has a higher _____________.

What is silica and viscosity?

500

When volcanoes erupt, we can measure them using this scale.

What is the volcanic explosivity index (VEI)?

500

When investigating volcanoes (as we did in class), this is one method scientists would not use.

What is build a model out of Play Doh?

500

Scientists can investigate one of these in order to look at the layers of a volcano under the surface.

What are core samples?

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