This type of Volcano is not high, but very wide. It has gently sloping sides.
What is a shield volcano?
100
This is the hazard that is the least hazardous to humans but very dangerous for things that cannot move.
What is lava flow?
100
What is the layer of rocky material underneath the land and oceans of Earth?
What is the crust?
100
These are tiny pieces of molten lava that turn into glass spheres or tear drops after cooling quickly.
What are Pele's tears?
100
__________ does impact how fast lava flows. On the front edges of a basalt flow, lava can go approximately 10km per hour on steep slopes. On a gentle slope, basalt lava generally travels less than 1 km/hour.
What is viscosity?
200
This type of volcano has very steep sides. It is the smallest of the three types of volcanoes.
What is Cinder Cone?
200
One of volcano hazard is the creation of huge _______ ________which can cover great distances. During the 1980 eruption of Mount St. Helen, over 3 m of this hazard were erupted. This material can clog airplane engines and cause breathing problems.
What is an ash cloud?
200
This feature is believed to be made of hot rocks. Beneath the ________ is the outer core.
What is the mantle?
200
These are glass bubbles or sheets that have been created by the quick expansion of steam when lava meets seawater.
What is Limu o Pele?
200
At night, pyroclastic flows can look eerie. The French gave the glowing cloud a name, ___________ .
What is Nuée Ardente?
300
This type of volcanic activity does not form a volcano as we imagine it.
What is Fissure Eruption?
300
This hazard is a steaming hot mixture of steam, ash, and rock. It travels at tremendous speeds and destroys everything in its path.
What is pyroclastic flow?
300
This is the type of volcanic feature that is used to describe the Yellowstone super volcano. Rather than being a traditional shape, the Yellowstone volcano looks more like a crater.
What is a caldera?
300
Most lava is composed of this type of extrusive volcanic rock.
What is basalt?
300
This is the term used by volcanologist to describe the explosive eruption that takes place inside a crater lake or the ocean that forms a low-density flow of steam, water and rock debris.
What is Base Surge?
400
This type of volcano is formed of layers of pyroclastic material and lava flows.
What is composite cone (stratovolcano)?
400
When lava moves through the volcano is may form this type of hazard.
What is volcanic earthquake?
400
Standing less that 1 - 2 meters tall, this type of feature are volcano-shaped structures made from a mixture of sediment and hot water.
What is a mud volcano or mudpot?
400
Lava with this type of viscosity will flow easily, forming things like shield volcanoes and flood lavas.
What is low viscosity?
400
Volcanologists have used the __________to learn more about volcanoes.
What is the Scientific Method?
500
This is the largest type of volcano based on total mass not just what we see.
What is shield volcano?
500
When a pyroclastic flow mixes with water it will form a massive ________. This hazard destroys bridges, tears down forests, and can even move huge boulders.
What is a lahar?
500
These are strands of volcanic glass that are pulled out of and stretched from molten lava into thin strands.
What is Pele’s hair?
500
Lava with this composition comes from composite cone volcanoes.
What is highly viscous lava?
500
When a volcano explodes violently, the magma turns into something called _________. ______ can be small little pieces of ash to huge boulders.