Volcanoes
what is a volcano?
a volcano is a mountain built from magma.
What are three types of volcano's?
one type of volcano is composite,cinder cone,and shield
Why can volcanoes be devastating?
Can be devastating to local economies because it can cause great human loss
What is one thing that can cause humans to die suddenly?
breathing problems
what is magma?
melted rock that is found beneath earth's surface.
Why does a volcano erupt?
A volcano erupts because the pressure of the magma inside becomes so great that it blows open a solid surface of the volcano.
What flows down the slope of a volcanoes?
Ash,dust,and gas
what is located near tectonic plates?
Volcanoes are near tectonic plate boundaries
What leads out the volcanoes vents?
Lava
how many mph does the volcanoes ash,gas and dust flow down the volcanoes
200 km/hour
Where might a volcanoes occur?
A volcano will occur on land or sea
What is at the bottom of the volcano?
The magma chamber
what two things mix to make a mud-flow?
Water and ash
Why don't volcanoes erupt sometimes?
They don't erupt because magma flows out of the volcano.
What is at the top of a volcano?
The summit
What three things can happen when a volcanoes erupts?
Buildings to collapse,buried crop and damaged engines