Alaska's Volcanoes Are

Q6: Why is Crater Lake in Oregon considered

Q7: What does harmonic tremor indicate is happening

Q8: The eruption that buried the city of

Q9: The chemical composition of all lavas is

Q10: The eruption of Mount St.Helens was one

Q12: Distinguish aa from pahoehoe flows.

Q13: Why are some places (e.g.,northern California)more likely

Q14: Why does most volcanism at spreading ridges

Q15: What do lava domes form from?<br>A) mafic

Q16: Supervolcanoes _.<br>A) are enormous peaky volcanic cones<br>B)