12. 3) Laccolith
(A dome shape formed when magma is pushed into a sill
and doesn’t spread)
When a laccolith is formed it may push the layers of rock above it.
14. Active volcanoes
(Currently erupting or
recently erupted)
Types of volcanoes
Dormant
volcanoes
(Does not erupt
for some time)
Shield
volcanoes
Cinder-
cone
volcanoes
Composite
volcanoes
Extinct volcanoes
(Stopped
erupting)
15. 1) Shield volcanoes
Built by thinner, fluid lava that spreads over a
large area.
(Broad base and gently sloping sides)
16. 2) Cinder-cone volcanoes
Formed by thick lava that is thrown high up in the
air and fall as chunks or cinders.
(Form as cone shape with narrow base and steep sides)
17. 3) Composite volcanoes
Built by layers of ash and cinders sandwiched
between layers of hardened lava.
(Both sides of a composite volcano look the same)