Earthquake and Volcanoes Flashcards
Which type of volcano has viscous lava?
Composite Volcanoes
Which type volcano has the widest base?
Shield Volacnoes
What is an area of geological weakness called?
fault line
What comes out the top of a volcano?
Pyroclastic flow, ash, lava, gases, lava bombs
Which scales measure earthquake energy?
The Richter Scale / Moment Magnitude Scale
Which scale measures the damage of an earthquake?
The Mercalli Scale
What is the focus of an earthquake?
The location where the earthquake begins (below ground). The ground ruptures at this spot, then seismic waves radiate outward in all directions.
What is the epicenter of an earthquake?
Epicenter - the point on the Earth’s surface located directly above the focus of an earthquake.
What is the difference between magma and lava?
Magma is composed of molten rock and is stored in the Earth’s crust. Lava is magma that reaches the surface of our planet through a volcano vent
When was the Mount Ontake eruption?
27th September 2014
How many people were killed by the eruption?
63
Why was the Mt Ontake eruption so deadly?
It was not predicted and it was a steam driven phreatic eruption.
