1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alenkasestr [34]
4 years ago
7

An unknown mineral specimen is not scratched by a penny and does not exhibit cleavage. The mineral is most likely to be _____

Geography
1 answer:
Svetradugi [14.3K]4 years ago
5 0

Answer:

Quartz

Explanation:

<u>Quartz is a resistant mineral whose hardness is 7, according to the Mohr's hardness scale</u>. It is made up of silicon and oxygen and very abundant on the earth's continental crust, after feldspar. It is a very hard mineral that crystallizes in the hexagonal system.

<u>It cannot be scratched by a copper penny and also cleavage is absent. They are the most stable rocks that resist weathering and erosion</u>.

Thus, it is a very important mineral that forms the majority of sedimentary igneous and metamorphic type of rocks.

You might be interested in
Place the stages of a high-mass star's life cycle in the correct order, from a star's birth to its death.
Fittoniya [83]

Nebula --> Protostar --> Supergiant  --> Supernova --> neutron star are the right place of a high-mass star's life cycle in the correct order, from a star's birth to its death.

<h3>What is Protostar ?</h3>

Due to its growing gravity, the protostar will keep condensing. As the hydrogen atoms begin to collide, nuclear fusion will be triggered by the pressure and temperature. The start will then enter its primary sequence, when the inward and outward forces of nuclear fusion are balanced.

Thus, the words are arranged in above statement.

For more details about Protostar, click here:

brainly.com/question/13242699

#SPJ1

3 0
2 years ago
Using complete sentences, describe the economic challenges African states are facing today.
iren2701 [21]
They face problems with their economic growth and jobs. They also have problems with mining, cost of living, delivery of services and also corruption. 
7 0
3 years ago
Read 2 more answers
What do you mean by mohorovicic discontinuity ​
Lera25 [3.4K]

Answer:

The Moho is the boundary between the crust and the mantle in the earth. Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it. The boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.

The Mohorovičić discontinuity usually referred to as the Moho discontinuity or the Moho, is the boundary between the Earth's crust and the mantle. It is defined by the distinct change in velocity of seismological waves as they pass through changing densities of rock.

7 0
3 years ago
The Nile river flows into the Mediterranean Sea, what is the volume of the Nile River?:)
NeTakaya
<span> 84 billion cubic meters per year</span>
8 0
3 years ago
Read 2 more answers
1. How can you tell living things
Nata [24]

Answer:

c

Explanation:

It cant be a because of plants

it cant be b because it just dont make sense

it cant be d because you can see non living too

7 0
4 years ago
Other questions:
  • In what of the following countries do people have the fewest civil rights and democratic freedom
    14·2 answers
  • St. Paul was a follower of Jesus who spread Jesus’ teachings to people other than the Jews. St. Paul thought of himself as an ap
    11·1 answer
  • Madison was chosen to star as Dorothy in her middle school's production of The Wizard of Oz. Her soccer practice is at the same
    11·2 answers
  • Montreal was founded on the banks of the St. Lawrence River where the Lachine Rapids impeded upstream navigation. This is a desc
    13·1 answer
  • What additional evidence supports the theory of plate tectonics
    11·1 answer
  • 1. In what korean capital city were mysterious changes recently observed on the upper floors of high-rises?
    15·1 answer
  • Sort the colors of the light spectrum from the shortest wavelength to the longest wavelength.
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=wht%20%5C%3A%20is%20%5C%3A%20f%28x%29%20%3D%202x%20-%201%20%5C%3A%20when%20%5C%3A%20x%20%3D%20
    11·1 answer
  • The Earth from space titled June Twenty-first. A red line is drawn horizontally through the middle of Earth. The Northern and So
    14·2 answers
  • Which space technology is most likely being launched to the sun in 2018? space probe space rover space shuttle space station
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!