13. What magma type is continental and oceanic crust made of? 14. What magma pro
ID: 294444 • Letter: 1
Question
13. What magma type is continental and oceanic crust made of?
14. What magma properties influence volcanic eruptive style?
15. In what tectonic setting are explosive volcanoes found?
16. What specific type of volcano is most hazardous?
17. Why do volcanic rocks have smaller grain sizes than plutonic rocks?
18. What is the difference between weathering and erosion?
19. What are the two types of weathering?
20. How is most sediment transported on Earth? (ice, water, or wind?)
21. Why does limestone form in the deep oceans instead of sandstone or shale?
22. What 3 conditions change during metamorphism?
23. What is the most common cause of earthquakes?
24. What is the difference between the Mercalli, Richter, and Moment scales?
25. In what tectonic setting do highest magnitude earthquakes occur?
26. Know how tsunamis are generated, and why they aren’t associated with transform boundaries
27. What does the term
orogenesis
mean?
28. Why do crustal fragments accrete rather than subduct?
29. What is isostacy?
Explanation / Answer
Continental magma is felsic type (granite, rhyolite, calc-alkaline rocks)and oceanic crust Magma type is mafic (includes lavas madeof basalt that is, rock material consisting largely of plagioclase feldspar and pyroxene).
Viscosity properties of magma influence volcanic eruptive style.
In subduction zone or destructive plate boundary, explosive volcanoes are found.
Cinder cone type volcano is most hazardous.
Volcanic rocks are formed above the surface. For that cause, they cool rapidly or faster than plutonic rocks. So grain size of volcanic rocks are finer than plutonic rocks.
The primary difference between weathering and erosion is that weathering occurs in place whereaserosion involves movement to a new location. Both are caused by similar factors of wind, water, ice, temperature, and even biological action. They can also occur together.
Two types of weathering are chemical and physical or mechanical weathering.
Most sediment transported on Earth by wind
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