16. D. How They Formed & What They're Made From 17. B. It cooled beneath the Earth's surface, more slowly than rock X. 18. A. metamorphic rock 19. D. igneous, metamorphic, and sedimentary rocks 20. D. precipitation of minerals as the seawater evaporates 21. B. solidification from a melt.
What more can be known about rocks formation?
Rocks are classified as igneous, metamorphic or sedimentary according to:D. How They Formed & What They're Made From
Rock X and rock Y are igneous rocks with identical mineral composition. Rock X has no visible crystals and rock Y has large, visible crystals. What can be inferred about rock Y?
B. It cooled beneath the Earth's surface, more slowly than rock X.
- Large, visible crystals in igneous rocks typically indicate slow cooling beneath the Earth's surface, allowing time for the crystals to grow.
The recrystallization of unmelted material under high temperature and pressure results in: A. metamorphic rock
- Metamorphism involves the recrystallization of rocks due to high temperatures and pressures, but without melting.
The types of rocks that can be the source of deposited sediments is D. igneous, metamorphic, and sedimentary rocks
- All types of rocks can be broken down into sediments.
The process that would form a sedimentary rock is D. precipitation of minerals as the seawater evaporates
- Sedimentary rocks can form through the precipitation of minerals, often from evaporating water.
The processes have ALL igneous rocks undergone is B. solidification from a melt
- All igneous rocks are formed from the solidification of molten magma or lava.