What is liquid magma that flows from a volcanoes vent. Or Magma that has reached Earth's surface.
100
This forms when magma is blasted into the air and hardens
What is pyroclastic material
100
A body of molten rock deep underground that feeds a volcano
What is magma chamber
100
a large, semicircular depression that forms when the chamber that supplies the magma to a volcano partially empties and the chamber's roof collapses
What is calderas
100
Name two benefits that volcanoes have
What is fertile soil, tourism, volcanic minerals, new land.....
200
Name this lava: This is named because of the painful experience of walking barefoot across its jagged surface.
What is Aa.
200
Large blobs of magma that harden in the air. The shape of this is caused by the magma spinning through the air as it is cooled.
What is volcanic bombs
200
Around the central vent at the top of many volcanoes is a fulled - shaped put called a
What is crater
200
These are volcanoes that are built of layers of lava released from repeated nonexplosive eruptions. These make up some of the tallest mountains on Earth.
What is Shield volcanoes
200
What is the name of volcanoes that surround the Pacific Plate
What is Ring of Fire
300
Name that Lava: This is lava that flows slowly, and it has a glassy surface with rounded wrinkles.
What is Pahoehoe
300
This means "little stones" in Italian, they are pebble like bits of magma that hardened before they hit the ground.
What is lapilli.
300
Magma rises from the magma chamber through cracks in the Earth's crust to openings called _____________
What is vents.
300
A wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area.
What is lava plateau
300
Name the four ways to predict a volcanic eruption
What is small quakes, measuring volcanic gas, measuring the slope of the volcano (or the sides), and measuring the temperature.
400
Name that lava: this forms when lava erupts underwater.
What is Pillow lava
400
These are the largest pieces of pyroclastic material
What is volcanic blocks
400
What are the two types of eruptions? Explain
What is non explosive and explosive
400
volcanoes that are made of pyroclastic material usually produced from moderately explosive eruptions
What is Cinder Cone volcanoes
400
What are hot spots
What is volcanically active places on the Earth's surface that are far from plate boundaries.
500
If a lava has a high viscosity that means that it will flow very ___________.
What is slowly.
500
This forms when the gases in stiff magma expand rapidly and the walls of the gas bubbles explode into tiny, glasslike slivers.
What is Volcanic Ash
500
Magma that is rich in silica is said to cause a(n) ____________ eruptions
What is explosive
500
What is another name for composite volcanoes?
What is Stratovolcanoes.
500
Explain what dormant, extinct and active volcanoes are
What is Dormant - sleeping volcano, extinct - never erupted in documented history and not expected to, and active - currently erupting or show signs of erupting in the future.