Volcanoes theory
Earthquakes theory
Vocabulary and examples
100
What is a volcano?
It is an opening in the surface of one of Earth's plates through which magma rises
100
What is an Earthquake?
It's the sudden movement/shifting of the tectonic plates
100
What is a hot spot?
It is a hot zone on Earth, an area of ongoing volcanic activity
200
What is the name of the hot rock that comes form the volcano, inside and outside of it?
Inside it is called magma, and outisde it is called lava
200
What type of tectonic plates can produce Earthquakes?
They are colliding(convergent) boundaries and fracture (transformed) boundaries
200
What's the meaning of Withstand?
To resist the pressure, heat or cold.
300
Where do volcanoes commonly occur?
They occur in plate boundaries
300
What are Focus and Epicenter in an Earthquake?
The underground point where the Earthquake occurs is the focus, the point on Earth's surface directly above the focus is the epicenter
300
What's the rim of a volcano?
It is the outside edge of the Crater's circular area
400
What type of plate boundary can allow magma to rise under the floor?
This happens at spreading boundaries
400
How is the energy of an Earthquake carried by?
It's carried by waves that spread from the focus and epicenter
400
Why is hawaii a volcanic area?
Because it is located on a hot spot
500
Explain how a volcano occurs
1) When two plate tectonics meet, one of them sink beneath the other. 2) The sinking crust melts into magma under the Earth. 3) Pressure is created by the gases released by the melting rock 4) When the overlying layer can't withstand the pressure anymore, the volcano erupts
500
What is 'magnitude' and how is it showed/represented?
It is a scale that shows how strong an Earthquake is, and it is showed in Ritcher scale.
500
Explain why an Earthquake in Iran did more damage than a similar Earthquake in Russia.
In Iran, the Earthquake stroke at night, people were sleeping. Plus, they don't have good quality buildings to resist the Earthquake, and people don't have any training to be ready for it.
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