Question

which element in the image will turn into extrusive igneous rock?
image of a volcano with labeled parts a, b, c, d (lava flow on surface: a; rock layer: b; magma chamber: c; volcanic cone: d)
options:
○ a. a
○ b. b
○ c. c
○ d. d

Explanation:

Extrusive igneous rock forms from lava that cools on the Earth's surface. In the volcano diagram, A represents the lava (magma) that has reached the surface and flows out. When this lava cools quickly on the surface, it forms extrusive igneous rock. B seems to be a layer of rock (maybe sedimentary or metamorphic), C is magma below the surface (which would form intrusive igneous rock if it cools there), and D is the volcanic cone or other surface features but not the lava flow forming extrusive rock. So the element that turns into extrusive igneous rock is A.

Answer:

A. A