Question

part 2

• 1 point

what does the texture of the two rocks
on top reveal about how the rocks
formed?
that they formed as a result of great pressure
that they formed deep underneath earths
surface
that they formed at earths surface from
magma that cooled rapidly
that they formed of sediments settling at the
bottom of a water source

Explanation:

• Igneous rocks that form at Earth's surface from magma that cooled rapidly (extrusive igneous rocks) have a fine - grained texture. This is because the rapid cooling does not allow large crystals to form.
• Rocks that formed as a result of great pressure (metamorphic rocks) have a foliated or non - foliated texture depending on the type of metamorphism and minerals involved, which is not indicated by the “texture of the two rocks on top” in the context of this question if we assume it's about igneous rocks.
• Rocks that formed deep underneath Earth's surface (intrusive igneous rocks) have a coarse - grained texture due to slow cooling which allows large crystals to form.
• Rocks formed of sediments settling at the bottom of a water source (sedimentary rocks) have a clastic (if made of fragments) or chemical (if formed from precipitation) texture, not the fine - grained texture associated with rapid cooling at the surface.

Answer:

C. that they formed at Earth's surface from magma that cooled rapidly