a positive effect on a volcano
creates fertile soil for farming
name an extinct, dormant and one active volcano
mount slemish, fuji, etna
a negative impact on volcanos
loss of life and property destruction
name 4 parts of a volcano
crate, main vent, magma chamber, lava
how does a volcano form
when magma from beneath the earths crust rises to the surface typically at tetonic plate boundaries.
EARTH; name the 2 crusts
oceanic and continential
whats the difference between the 2 crusts
1: thinner and denser 2: thicker
what is the crust made of
solid rocks and minerals
label the earth
mantle, outer core, inner core, crust
where is the mantle
underneath the crust
how does mantle move around
in very slow currents
what is mantle made off
magma
where is the core
centre of the earth
why is the inner ball solid?
due to pressure
what is outer core made of
molten
why do plates move?
convention currents
what is a plate boundary
the location of where two or more plates meet
what is a plate
crust broken into pieces
