Question

1. how do minerals like gold and pyrite typically form?

from hardened lava on the surface
from dissolved substances in hot water that cool and crystallize
when wind blows dust into cracks
from pressure in metamorphic rock

1. what is the name for the wavy layers that form in some metamorphic rocks?

crystals

Explanation:

1. For question 6: Gold and pyrite are often formed via hydrothermal processes, where hot, mineral-rich water cools and allows dissolved minerals to crystallize. Hardened surface lava forms extrusive igneous minerals, wind dust forms sedimentary deposits, and metamorphic pressure alters existing rocks rather than forming these minerals this way.
2. For question 7 (partial): The wavy layers in metamorphic rocks are called foliation. Crystals are individual mineral structures, not the layered feature described.

Answer:

1. From dissolved substances in hot water that cool and crystallize
2. Foliation (note: this correct option was not fully shown, but it is the standard term for this feature)