Earthquakes Flashcards
(10 cards)
How do tectonic plates move?
By intense heat that comes from the core.
What is a tectonic plate?
A large slab of solid rock with an irregular shape that is made up of the oceanic and continental lithosphere.
What is a conservative plate boundary?
When plates slide past each other in opposite directions, or in the same direction but at different speeds.
How do conservative boundary’s cause earthquakes?
Friction is eventually overcome and the plates slip past in a sudden movement. The shockwaves created produce an earthquake.
Where are conservative earthquakes most likely to happen?
California
What is a destructive plate boundary?
When an oceanic and continental plate move towards each other.
How do destructive boundary’s cause volcanoes?
The crust becomes molten magma. This may be forced to the surface of the earth causing a volcanic eruption.
What is a constructive plate boundary?
When plates move apart.
How do constructive boundary’s cause volcanoes?
Volcanoes are formed well up to fill the gap, and eventually new crust is formed.
What were the impacts of the Haiti 2010 earthquake?
Social- 316,000 people dead - 1.3 million made homeless
Economic- $8.5 in damage - The earthquake shrank Haiti’s gross domestic product by 5.1 percent.
Environmental-Rubble from collapsed buildings blocked roads and rail links - The port was destroyed - Sea levels in local areas changed, with some parts of the land sinking below the sea - The roads were littered with cracks and fault lines
