1. Volcanoes
Unit 12.2

2. Shield Volcanoes Shield volcanoes are created __________ above _____________, NOT at plate boundaries.
inland
hot spots

3. inland hot spots mantle plumes short, wide cone lava a lot of magma
Shield Volcanoes Shield volcanoes are created __________ above _____________, NOT at plate boundaries.
inland
hot spots
mantle plumes
created from _________________ from hot spots
_____________________
made of ________ only
eruptions are not explosive but contain _____________________
short, wide cone
lava
a lot of magma

4. Shield Volcanoes

5. Shield Volcanoes
Mauna Kea, Hawaii

6. Shield Volcanoes
Video lava flow into Pahoa from Kilauea

7. converging oceanic volcanic belt volcanic island arc
Composite Volcanoes
Composite volcanoes are created at ______________ plate boundaries, where one plate is ___________.
continental + oceanic = chain of volcanoes on land called _____________________
oceanic + oceanic = chain of volcanoes in the ocean called _____________________
converging
oceanic
volcanic belt
volcanic island arc

8. volcanic island arc

9. How are composite volcanoes made?
carbonates
Oceanic plates have a lot of ____________ from dead sea animals

10. How are composite volcanoes made?
Subducting plate melts and the carbonates turn into ________

11. How are composite volcanoes made?
rise
pull magma
CO2 will _______ and __________________ with it

12. How are composite volcanoes made?
When the CO2 and magma reaches the surface, it forms a composite volcano: a ______________ volcano made of lava and ash
tall cone

13. Eruptions erupts hot gas and ash
____________________________, and little magma

14. Eruptions explosive high pressure
very _______________ because of gases inside the volcano build __________________
high pressure

15. Mt. St. Helen’s, 1980