volcano
what happens when magma comes up to the surface
the magma turns into lava
what is the ring of fire
a string of volcanoes and earthquakes around the edges of the Pacific Ocean.
mid Atlantic ridge is
one large divergent boundary between two plates
what is an active volcano
a volcano that can erupt at enytime
how do volcanoes form
when one tectonic plate moves under another
what is one of the three volcano types
cinder cone,shield or composite volcano
true or false ash is bad for car and jet engines
true
rifts are
a deep crack that forms from to tectonic plates
what is an extinct volcano
it is a volcano that can not erupt
how does constructive plates boundary's form volcanoes
the tectonic plates are moving away from one another which creates a pathway for rising hot magma to flow to the surface
what are the three ways volcanoes form
constructive plate boundaries,destructive plate boundaries,hot spots.
which is the deadliest factor of a volcano
Ash
true or false eruptions are mild along the mid Atlantic ridge
true
what is a dormant volcano
volcanoes that have not erupted in a long time but are expected to erupt again in the future.
most volcanoes occur
along plate boundaries/ring of fire
true or false there is a volcano type that is called a sword volcano
false
what is ash made of
ash is made of fragments of rock
Iceland formed by
magma that escaped and then cooled
what is a volcano
its a vent or opening in the earths crust
where are 90% of volcanoes are located
ring of fire
what is the percentage hot spots found
5%
what are two reasons why ash can be dangerous
it can pollute the water,it can block sun lite, it can kill crops, it can be hard to breath and it can clog mobiles and jet engines
true or false there is a mid pacific ridge
false