assignment 2

Question 1

Which of the following is NOT a mineral?

a. Quartz
b. Sugar
c. Sulfur
d. Diamond

Answer 1

sugar

Question 2

For a substance to be a mineral, which of the following must be true?

a. It must be made by living organisms

b. It must be in liquid form

c. It must be made by natural, geologic
processes

d. It must contain carbon-hydrogen bonds

Answer 2

c. it must be made by natural, geologic process

Question 3

What physical property can be extremely variable throughout samples of the same mineral, and is therefore not the most reliable tool to use in identifying minerals?

a. Fracture
b. Hardness
c. Effervescence
d. Color

Answer 3

color

Question 4

What physical property explains why diamond is a useful material as an industrial abrasive/cutting tool?

a. Fracture
b. Hardness
c. Resistance
d. Effervescence

Answer 4

hardness

Question 5

What is true about the relationship between graphite and diamond?

a. The are both minerals composed of
carbon, C

b. They have different physical properties
due to differences in their crystalline
structures

c. They are examples of polymorphs

d. All of the above

Answer 5

all of the above

Question 6

Which of the following magma compositions is the most silica-rich?

a. Felsic
b. Intermediate
c. Mafic
d. Ultramafic

Answer 6

felsic

Question 7

How are contact metamorphism and regional metamorphism different? Include two differences for full credit

Answer 7

Contact metamorphism happens when very hot magma gets inside the process of any rock than is cooler than the magma like sedimentary, metamorphic, or igneous.
Regional metamorphism occurs when big crust movements destroy or create new rock formations.

These two are different because one is already solid and changes when there is movement (regional) and the other happens when it is not fully solid yet (contact). Another difference they have is that (contact) happens below the earth’s surface and regional happens on earths surface.