question 5 of 10\nunder which condition below would you expect a coarse - grained extrusive rock like dacite…

question 5 of 10\nunder which condition below would you expect a coarse - grained extrusive rock like dacite to form?\na. lava slowly flowing out of a fracture in earths surface\nb. 25 km beneath earths surface\nc. quick cooling of lava occurring underwater\nd. within a zone of fractured rocks below earths surface

question 5 of 10\nunder which condition below would you expect a coarse - grained extrusive rock like dacite to form?\na. lava slowly flowing out of a fracture in earths surface\nb. 25 km beneath earths surface\nc. quick cooling of lava occurring underwater\nd. within a zone of fractured rocks below earths surface

Answer

Brief Explanations:

Extrusive rocks form on the Earth's surface from lava. Coarse - grained texture forms when cooling is slow. Lava slowly flowing out of a fracture on Earth's surface allows for slower cooling compared to rapid cooling scenarios. Options B and D are for intrusive rock formation environments, and option C involves quick cooling which results in fine - grained extrusive rocks.

Answer:

A. Lava slowly flowing out of a fracture in Earth's surface