Question

because many minerals are similar in color and certain elements may change the color, color is not a good identifier.

1. what type of rock texture results when extreme pressure causes minerals in metamorphic rock to realign, or when minerals separate out into dark and light bands?

a. nonfoliated
b. felsic
c. mafic
d. foliated

1. the crystallization and removal of different minerals from cooling magma is called

a. fractional crystallization.
b. partial cooling.
c. negative crystallization.
d. partial melting.

1. which of the following is not a common depositional environment?

a. plain
b. river
c. beach
d. delta

1. which of the following pairs of texture and rock is correct?

a. vesicular/rhyolite
b. fine - grained/obsidian
c. coarse - grained/granite
d. glassy/pumice

1. most metamorphic rock forms as a result of

a. magma flows.
b. regional metamorphism.
c. foliation.
d. chemical contact.

1. huge igneous rock structures have zones of weakness called

a. joints.
b. layers.
c. fractures.
d. columns.

1. single - chain silicates are silicate crystalline structures in which tetrahedra form a chain by sharing corner oxygen atoms with two other tetrahedra.

a. chain by sharing carbon atoms with two other tetrahedra.
b. ring by sharing oxygen atoms with two other tetrahedra.
c. ring by sharing silicon atoms with two other tetrahedra.
d. 18. which state of matter has a definite volume and takes the shape of its container?
a. solid
b. liquid only
c. gas only
d. both b and c

1. the name for this type of rock means \changed form.\

a. sedimentary
b. igneous
c. metamorphic
d. sandstone

Explanation:

1. Foliated texture in metamorphic rocks occurs when extreme pressure causes minerals to realign into dark - and light - bands.
2. Fractional crystallization is the crystallization and removal of different minerals from cooling magma.
3. Plains are not a depositional environment in the context of sediment deposition like rivers, beaches, and deltas are.
4. Granite has a coarse - grained texture.
5. Regional metamorphism is the main process for the formation of most metamorphic rocks.
6. Joints are zones of weakness in huge igneous rock structures.
7. Single - chain silicates form a chain by sharing corner oxygen atoms with two other tetrahedra.
8. Liquids have a definite volume and take the shape of their container.
9. The term "metamorphic" means "changed form".

Answer:

1. d. foliated
2. a. fractional crystallization
3. a. plain
4. c. coarse - grained/granite
5. b. regional metamorphism
6. a. joints
7. a. chain by sharing corner oxygen atoms with two other tetrahedra
8. b. liquid only
9. c. metamorphic