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- 1. Multiple ChoiceWhat is molten rock that has formed deep within the Earth?Hot SpotMagmaLavaVolcano
- 2. Multiple ChoiceWhat is molten rock that has reached the Earth's surface?AaLavaMagmaPahoehoe
- 3. Multiple ChoiceWhat factor(s) determine(s) whether an eruption will be explosive?The amount of gases in the magmaThe amount of silica in the magmaThe amount of gas and silica in the magmaNone of these affect the explosiveness of the volcano
- 4. Multiple Choice
As magma rises towards the surface it collects in a 'room' called a _____ _____ .magma chamberside ventmain ventlava chamber - 5. Multiple ChoiceVocanoes are found...on landunder wateron islandsall of the above
- 6. Multiple ChoiceThe difference between magma and lava is _____where it is found (above or below the surface)how hot the molten rock is (lava is hotter than magma)the type of boundary where it formsthe viscosity of the molten rock (lava has a lower viscosity)
- 7. Multiple ChoiceVolcanoes that have recently erupted are known as:Extinct VolcanoDormant VolcanoActive VolcanoWhat's a volcano?
- 8. Multiple Choice__________ volcanoes are usually steep sided. They are formed from layers of ash and lava.ShieldConeDormantExtinct
- 9. Multiple Choice__________ volcanoes are formed from fast flowing, lava which flows easily over the surface, forming larger volcanoes with gentle sides.ConeCompositeAngelShield
- 10. Multiple ChoiceA subduction zone is...plates pull apart.the continental plate slides under the oceanic plate.where the oceanic plate slides under the continental plate.plates slap each other a high five.
- 11. Multiple Choice
Lava that is very thin and runny probably
has low silica content
is high in silica
- 12. Multiple Choice
Where are volcanoes most likely to form?
along plate boundaries
near the center of continents
near water
on the moon
- 13. Multiple Choice
One major belt of volcanoes that surrounds the Pacific Ocean
Ring of Fire
Ring of Asia
Ring o' earthquakes
Ring a ding ding
- 14. Multiple Choice
A bowl shaped area that may form at the top of a volcano around the central vent
crater
vent
tube
leftovers
- 15. Multiple ChoiceLakes that form near volcanoes considered to be....CratersConduitsVentsCalderas
- 16. Multiple ChoiceWhat is letter B in the picture?Magma ChamberCraterVentConduit
- 17. Multiple ChoiceWhat is letter C in the picture?VentCraterCalderaTephra
- 18. Multiple ChoiceWhat is letter D in the picture?CraterVentConduitTephra
- 19. Multiple ChoiceWhat is letter E in the picture?TephraPyroclastic FlowMagma ChamberVent
- 20. Multiple ChoiceWhat is letter F in the picture?Pyroclastic FlowCraterVentTephra
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