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3 years ago

List 4 types of minerals that form uniquely in metamorphics rocks and explain why they do.

Geography

1 answer:

kherson [118]3 years ago

3 0

Answer: Sillimanite, Andalusite, Kyanite and Staurolite

Explanation:

This are the four main minerals that forms in metamorphic rocks and indicates metamorphism.

Sillimanite forms at a high temperature condition, andalusite forms at a moderate temperature and pressure condition, and lastly, kyanite forms at a high pressure condition. Staurolite also forms at high temperature-pressure condition.

This four minerals forms when a rock undergoes metamorphism and are usually found in metamorphic rocks such as schist, gneiss and granulite.

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Which of the layers of the Earth has the following characteristics? i. It is solid and extremely hot. ii. It is the innermost la

Stella [2.4K]

Answer:

b. inner core

Explanation:

To solve this problem let's start by listing the information given. This will help us find which option best fits the characteristics provided to find the correct answer.

characteristics of mystery layer:

i. it is solid and extremely hot

ii. it is the innermost layer of the Earth

iii. it is around 800 miles thick

Now let's go through each option to determine which best matches the characteristics.

option a

outer core

The first characteristic of the mystery layer is 'it is solid and extremely hot.' The outer core of the earth, however, is a fluid layer. Therefore, this option cannot be correct.

option b

inner core

The inner core is a solid 'ball' and is about 10,800°F. It is also the inner, or last layer, of the earth and is around 800 miles thick. Therefore, it matches all characteristics of the mystery layer so, this must be the correct answer. If you would like to be sure, I also reviewed the last two options below.

option c

crust

Because the crust is the outermost layer of the planet, it does not match the second characteristic of the mystery layer. Therefore, this cannot be the correct answer to the question.

option d

mantle

Although the mantle does match the first characteristic, it does not match the second characteristic, which requires the layer to be the innermost layer of the earth. The mantle is one of the outer layers of the earth.

Now that all options are reviewed, we have determined the best solution to the problem. The correct answer to this question is b. inner core.

4 0

3 years ago

Read 2 more answers

Discuss with examples, any four (4) main importance of the study of geomorphology to the socio-economic development of man.

Fudgin [204]

Answer:

Geomorphology, as a critical component of physical geography, is needed to understand natural landform changes and potential hazards for populations.

Explanation:

I hope you understand

8 0

3 years ago

The spectrum of a blackbody has a peak wavelength of 2.80×10-7 meters. What is its temperature, in kelvins?

-BARSIC- [3]

Answer: $1.03\times 10^4K$

Explanation:

Using Weins displacement law:

$\lambda _{max}=\frac{b}{T}$

where $\lambda _{max}$ = wavelength = $2.80\times 10^{-7}m$

b = constant = $2.897\times 10^{-3}mK$

T = Temperature in Kelvin = ?

Putting the values we get:

$2.80\times 10^{-7}m=\frac{2.897\times 10^{-3}mK}{T}$

$T=1.03\times 10^4K$

Thus the temperature of the blackbody will be $1.03\times 10^4K$

5 0

3 years ago

Please help i don't get it.

Andrew [12]

Answer:

the map matches C.

Explanation:

the map shows an elevated land with a flat top, also known as a plateau. image C shows a plateau, therefore the map matches C.

hope this helps

4 0

3 years ago

Read 2 more answers

when organisms die, how does carbon re-enter the environment? i. carbon dioxide (co2) is released during decay ii. carbon monoxi

snow_lady [41]

Answer

When the Organism dies, while the body becomes part of the soil(Decomposition), there is still Carbon that is trapped in the organism, so eat time something new from the body gets exposed, Carbon is released.

Explanation:

There are pockets that are in your body that hold air, and when we die, and those areas that are holding the air pockets become exposed while the decomposition, the Carbon gets released out of the body and into the air.

8 0

2 years ago