question 39 (1 point)\nwhich type of magma typically results in the greatest explosive events?\n a)…

question 39 (1 point)\nwhich type of magma typically results in the greatest explosive events?\n a) pahoehoe\n b) andesitic\n c) basaltic\n d) aa\n e) rhyolitic\nquestion 40 (1 point)\na very large volcano with gentle slopes is a ______, which is comprised of ______.\n a) cinder cone volcano...pyroclastic debris\n b) stratovolcano...lava flows and pyroclastic debris\n c) shield volcano...pyroclastic debris\n d) shield volcano...lava flows\n e) stratovolcano...lava flows

question 39 (1 point)\nwhich type of magma typically results in the greatest explosive events?\n a) pahoehoe\n b) andesitic\n c) basaltic\n d) aa\n e) rhyolitic\nquestion 40 (1 point)\na very large volcano with gentle slopes is a ______, which is comprised of ______.\n a) cinder cone volcano...pyroclastic debris\n b) stratovolcano...lava flows and pyroclastic debris\n c) shield volcano...pyroclastic debris\n d) shield volcano...lava flows\n e) stratovolcano...lava flows

Answer

Brief Explanations:

For Question 39, rhyolitic magma has high silica content, high viscosity, and high gas - content, which leads to explosive eruptions. Pahoehoe and Aa are types of lava flows, not magma types for explosive events. Andesitic and basaltic magmas are less explosive compared to rhyolitic. For Question 40, shield volcanoes are large with gentle slopes and are formed mainly from lava flows. Cinder cone volcanoes are made of pyroclastic debris and are smaller. Stratovolcanoes are composed of lava flows and pyroclastic debris and have steeper slopes.

Answer:

Question 39: e) Rhyolitic Question 40: d) Shield volcano...lava flows