Download Restless Earth – Key words

Restless Earth – Key words
WORD
Composite volcano
Conservative Margin
Constructive Margin
Continental crust
Crust
Destructive Margin
Earthquake
Epicentre
Focus
Fold Mountain
Geosyncline
Lava
Magma
Oceanic crust
Shield volcano
Supervolcano
Tsunami
Volcano
MEANING
A volcano with alternate layers of lava and ash.
A boundary between two plates sliding past each
other. Crust is neither formed nor destroyed.
A boundary between two plates moving apart.
New land is formed.
Part of the Earth’s crust that is thicker than
oceanic crust, generally 30 kilometres thick,
however it is lighter.
Thin layer at surface of the Earth.
A boundary between two plates moving together.
There are two types of destructive margin,
subduction and collision.
A sudden movement within the crust, usually
close to a plate boundary.
The place on the surface of the Earth that is
immediately above the focus.
Point in the crust where the earthquake occurs.
A range of high mountains formed by two plates
moving together.
A huge depression in the surface of the Earth.
Molten magma on the surface of the Earth.
Molten rock below the surface of the Earth.
Part of the Earth's crust that is thinner than
continental crust, generally 5 - 10 kilometers
thick, however it is denser.
A large volcano formed from basic lava (low
amount of silica).
A volcano that erupts with at least 1000km3 of
magma.
A giant sea wave travelling at high speed.
A cone shaped mountain formed by eruptions
from a magma chamber.