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VOLCANOES
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5. ________ eruption, a thick, viscous magma
flows around the vent as a solid lava and dust
are ejected
7. is the most violent and explosive tyoe of
eruption
9. horizontal crack with solidified or cooled
magma
10. elongated fracture or crack on the earth’s
crust from which lava erupts
13. _________ volcanoes. These are
volcanoes on the ocean floor and are formed
through collision of oceanic plates
15. is the least violent type, with highly fluid
or runny lava flowing out several vents
16. is formed by highly viscous or thick, slowmoving lava
17. passageway through which magma travels
to reach the earth’s surface
20. side of a volcano
22. ________volcanoes. These are volcanoes
that are overlain by glaciers
1. are series of sea waves caused caused by
the displacement of large volumes of water
because of an underwater earthquakes or
volcanic eruption
2. study lava to determine its composition
3. ________ volcano is formed by loose and
fluid lava that flows over each other
4. _______ cone, also known as scoria cone
5. opening where volcanic materials are
released
6. vertical crack with solidified or cooled
magma
8. these are hot bursts of trapped gases that
push their way through solid barriers and
rapidly into the atmosphere
11. is violent featuring continuous ejection of
magma and gas
12. bowl-shaped depression at the top of the
volcano where the vent is located
14. once the magma reaches the crust, it is
called _________
17. when they explode, an area of the volcano
may collapse, forming a larger crater and
depression called ________
18. ________ volcanoes have no record of
eruption
19. beneath the crust of the earth is a region
21. pulverized rocks, minerals, volcanic glass
23. this is also called mudflow or flow of
volcanic debris