Topic 1: Restless Earth Flashcards
What volcanoes are formed on constructive plate boundaries?
Shield volcanoes
When 2 plates move away from each other
Constructive
When a continental and an oceanic plate collide
Destructive
Which plate sinks under the other at a destructive plate boundary?
Oceanic
When 2 continental plates move towards each other
Collision
What type of mountains are formed at collision plate boundaries?
Fold mountains
When 2 plates slide past each other
Conservative
Which plates are denser?
Oceanic
What are oceanic plates made from?
Basalt
What are continental plates made of?
Granite
What’s an example of ‘fold’ mountains?
The Himalayas
Where do earthquakes and volcanoes occur?
Along plate boundaries
Which type of plate is thinner?
Oceanic
If the Earth was an apple, what would the skin be equivalent to?
The crust
3 reasons why the core is so hot
Residual heat
Friction
Radioactivity
What is it called when convection currents move the lithosphere?
Slab pull
Another name for a conservative ate boundary?
Transform
What type of volcano has very small sides?
Super volcano
What type of volcano is it when lava comes out like a fountain?
Shield volcano
What type of volcano is it when lava spews out from a long trench?
Fissure volcano
What type of volcano is it when it is explosive (ash cloud, volcanic bombs)?
Composite volcano
Example of a composite volcano?
Mount Fuji
Example of a fissure volcano?
Laki
What are the devices used along with laser beams to see if a volcano is about to erupt?
Tilt metres
