1) A volcano is usually a mountain that has an opening at the top. This opening is called the . . . a) Crater b) Crust c) Ash d) Lava 2) Lava, ash and . . . come out of the crater. a) magma b) steam c) water 3) This is a volcanic . . . a) lava b) mountain c) vent d) eruption 4) The hot liquid rock inside the volcano is called . . . a) vent b) magma c) lava d) crust 5) Once magma comes out, it is called . . . a) magma b) igneous c) vent d) lava 6) How many of the Earth's volcanos are located in the Pacific Ring of Fire? a) 50% b) 20% c) 40% d) 75% 7) A volcano is formed from a crack in the Earth's ________ a) crust b) inner core c) outer core d) mantle 8) A composite volcano ... a) was formed with sticky lava b) was formed with runny lava. c) is cone-shaped d) has steep sides 9) A shield volcano ... a) has gently-sloping sides b) is flatter than a composite volcano c) is formed from runny lava d) is more dangerous than a composite volcano 10) An active volcano ... a) has erupted at some time in the last 10,000 years b) is shaking all the time c) could erupt again d) might be erupting now 11) A dormant volcano ... a) is asleep b) is an active volcano that is not erupting right now c) won't erupt again d) could start erupting again in the future 12) An extinct volcano ... a) has disappeared b) is not real c) will almost certainly not erupt again d) is just a mountain now

Volcanoes

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