Volcanoes & Plate Tectonics
Properties of Magma
Volcanic Eruptions
Volcanic Landforms
Random
100
A weak spot in the crust where molten material, or magma, comes to the surface
What is a volcano?
100
A liquid's resistance to flowing
What is viscosity?
100
Beneath a volcano, magma collects in a pocket called a __ ___
What is a magma chamber?
100
This is an example of which kind of volcano
What is a shield volcano?
100
This is how most people died during the Mount St. Helens eruption
What is ash inhalation?
200
A molten mixture of rock-forming substances, gases, and water from the mantle
What is magma?
200
Any characteristic of a substance that can be observed or measured without changing the composition of the substance
What is a physical property?
200
Molten rock and gas leave the volcano through an opening called a . . .
What is a vent?
200
What kind of volcano is this? (Crater Lake, Oregon)
What is a cinder cone volcano?
200
Crater Lake, Oregon, is an example of a ____
What is a Caldera?
300
One major volcanic belt formed by the many volcanoes that rim the Pacific Ocean
What is the Ring of Fire?
300
This is a substance that cannot be broken down into other substances
What is an element?
300
When a volcano erupts, this force pushes magma from the magma chamber through the pipe until it flows or explodes out of the vent
What is/are gas/gas bubbles?
300
This is a mass of rock formed by large body of magma cooling inside the crust
What is a batholith?
300
A ___ ____ is made up of many layers of thin, runny lava that erupt from long cracks in the ground
What is a lava plateau?
400
Volcanoes form along __ ___ ______, which mark diverging plate boundaries.
What are mid-ocean ridges?
400
The ability to react with oxygen (and darken) is a ____ ____ of silver
What is a chemical property?
400
The Hawaiian islands were formed from this kind of eruption
What are quiet eruptions?
400
Hot springs and geysers are types of ___ ____
What is geothermal activity?
400
This kind of volcano is formed from explosive eruptions
What is a cinder cone volcano?
500
A string of islands formed by the volcanoes along a deep-ocean trench
What is an island arc?
500
The viscosity of magma depends on these two factors
What is silica content and temperature?
500
A volcano erupts explosively if it is high in . . .
What is silica?
500
A __ ___ is formed when magma hardens in a volcano's pipe
What is a volcanic neck?
500
Old Faithful in Yellowstone is an example of a
What is a geyser?
600
A __ ___ is an area where material from deep within the mantle rises and then melts, forming magma.
What is a hot spot?
600
Each substance has a particular set of physical and chemical properties. These properties can be used to . . .
. . . identify a substance and predict how it will behave
600
These are pebble-sized particles of volcanic rock (from a Pyroclastic flow)
What are cinders?
600
A ___ is a fountain of water and steam that erupts from the ground
What is a geyser?
600
This forms when groundwater heated by a nearby body of magma rises to the surface and collects in a natural pool
What is a hot spring?
700
The oldest Hawaiian island
What is Kaua'i?
700
When ___ hardens, it forms a rough surface consisting of jagged lava chunks
What is aa?
700
Based on the video we saw, geologists use these two kinds of instruments to monitor volcanoes
What are tiltmeters and GPS?
700
When magma squeezes between layers of rock, it forms a . . .
What is a sill?
700
Magma that forces itself across rock layers hardens into a . . .
What is a dike?
800
The ancient Greeks believed this mountain was one home of Hephaestus, the Greek god of fire.
What is Mt. Etna in Sicily?
800
This mountain on the Big Island of Hawaii erupts frequently and produces large amounts of lava
What is Mt. Kilauea?
800
This type of rock forms when lava sprays out of the ground like water from a foutain.
What is Pele's hair?
800
When Mr. Beagan was in Japan, he did not spend most of his time in the mainland (where Mt. Fuji is). Instead he stayed mostly on this small Japanese island.
What is Okinawa?
800
This type of rock forms when lava cools very quickly, giving it a smooth, glossy surface like glass
What is obsidian?