Question

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The texture of an igneous rock is a very important to a geologist because
A) the texture can be used to calculate the age to the rock.
B) the texture can be used to predict future igneous activity.
C) the texture can be used to give a geologist clues to the rock’s origin.
D) the texture can be used to calculate the probability of seismic activity.
2)


Igneous rock is formed by the cooling and solidification of molten Earth materials. Igneous rock forms when magma or lava cools. If underground pockets of magma _________________ and solidify, ________________ igneous rock is formed, such as granite.
A) cools quickly, extrusive
B) cools quickly, intrusive
C) cools slowly, extrusive
D) cools slowly, intrusive
3)


Igneous rock is formed by the cooling and solidification of molten Earth materials. Igneous rock forms when magma or lava cools. If igneous rock forms above ground after a volcanic eruption, it ________________ forming ____________ igneous rock, such as obsidian which is a naturally occurring volcanic glass.
A) cools quickly, extrusive
B) cools quickly, intrusive
C) cools slowly, extrusive
D) cools slowly, intrusive
4)
Molten hot magma that cools very slowly can cause ______________ in igneous rock.
A) mineral layering
B) glass-like formations
C) settling of precious metals
D) the formation of large crystals
5)


Q is granite, an igneous rock. Which of these is NOT a characteristic of igneous rock?
A) Igneous rocks can have large crystals.
B) Igneous rocks are generally the hardest and heaviest rocks.
C) Igneous rocks are conglomerates, predominantly composed of rounded gravel.
D) Igneous rocks contain minerals, providing details on the conditions in which the magma originated, cooled, and solidified.
6)


Once the magma found at location "E" cools and crystalizes, it will
A) turn into lava.
B) form igneous rocks.
C) sink back into Earth's deep interior.
D) form igneous, metamorphic, and sedimentary rocks.
7)


The diagram shows a region P near a group of active volcanoes.

Which kind of rock is MOST likely to be found at location P?
A) granite
B) limestone
C) marble
D) sandstone
8)


Which set of characteristics best describes igneous rock?
A) largest type of rock, made of organic matter, hardest type of rock
B) least abundant type of rock, made of other rocks, made mostly of minerals
C) found on all continents, contains wavy bands of stripes, contains fossils
D) most abundant type in Earth's crust, made of magma/lava, contains no fossils
9)
Pumice is a type of rock formed when gas bubbles are trapped inside of cooling lava. Pumice is most often formed when volcanoes erupt violently. What type of rock is pumice?
A) extrusive igneous
B) intrusive igneous
C) contact metamorphic
D) foliated metamorphic
10)
Granite is a coarse or medium-grained rock that is rich in quartz and feldspar. It is formed when bodies of magma cool and harden deep below the earth. What type of rock is granite?
A) metamorphic
B) sedimentary
C) extrusive igneous
D) intrusive igneous
11)


Igneous rocks can be formed from magma that solidifies deep beneath the Earth’s surface. When the magma solidifies slowly, it results in rocks with large crystals and a coarse texture. When it cools quickly, it creates more smooth and shiny rock with fine grains.

Sedimentary rocks are made from the weathering and erosion of pre-existing rocks. If the sediment is buried deeply, it becomes compacted and cemented. Sedimentary rocks also form from organic material and often contain fossils.

Metamorphic rock is a result of a transformation of a pre-existing rock subjected to high heat and pressure. This causes the minerals in the rock to become unstable so they either reorient themselves into layers, giving them a striped look or recrystallize into larger crystals.
Based on the reading, how would you classify this rock?
A) Sedimentary rock because of its layers.
B) Metamorphic rock because of its stripes.
C) Igneous rock because it has large crystals.
D) Sedimentary because of the presence of fossils.
12)
An igneous rock sample may be classified as intrusive because of its
A) glassy texture.
B) small crystals.
C) large crystals.
D) porous texture.

Answer 1

Answer:

1 - C

2- D

3-A

4- D

5 ?

6 - B

7 A

8- D

9?

Explanation: PLZ MARK ME BRAINLIEST

Answer 2

Answer:

1. (c) texture can be used to give a geologist close to the rocks orgin.
2. (c) Cools slowly, extrusive
3. (b)cools quickly, intrusive
4. (d) formation of large crystals.
5. (c) igneous rocks are conglomerates , predominately exposed of rounded gravel.
6. (b) form igneous rocks.
7. (a) granite
8. (a) largest type of Rock made of organic matter,hardest type of Rock.
9. (a) extrusive igneous
10. (c)extrusive igneous