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2 years ago

Continental crust is younger than oceanic crust. Please select the best answer from the choices provided T F.

2 answers:

5 0

The statement that the continental crust is younger than the oceanic crust is completely FALSE. This is because the continental crust is considered to be as old as the Earth itself.

The continental crust is referred to as the portion of the earth covered under land, and that of the oceanic crust is considered to be a part of the area of the earth covered under Oceans.

<h3>Continental Crust</h3>

The chemical composition of the oceanic crust is different from that of the continental crust, which is a strong evidence to show that the continental crust is older than the oceanic crust.

The destruction of continental crusts are impossible, and there is often a recycle experienced in the process of subduction. This concludes that such crusts might be as the same as the age of Earth.

However, sometimes there is a formation of newer continental crust over oceanic crust due to formation of rock resulted due to passage of time and only these newer crusts are younger to oceanic crusts.

Hence, it can be concluded that the statement above that Continental crust is younger than the oceanic crust is FALSE.

To know more about Continental crusts, refer to the link below.

brainly.com/question/25938468

Firdavs [7]2 years ago

5 0

Answer:

It is, and it is not. To be more accurate, continental crusts are more buoyant than oceanic crusts. This is why no matter what, subduction of continental plates is not possible.

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In nuclear fission and fusion reactions mass is converted into energy. The average person in US uses around 100,000,000 J of ene

daser333 [38]

Answer:

a) The yearly energy consumption for a US population of 300 million is $3\times 10^{16} J/year$

b) The energy that would be released if a 60 kg person were converted entirely into energy is $5.4\times 10^{18}$ Joules.

c) 180 years would this amount of energy support a population of 300 million.

Explanation:

a) Average energy consumed by single person of US = 100,000,000 J/year

Then 300 million US citizen will consume:

300 million = 300 × 1,000,000 = $3\times 10^8$

The yearly energy consumption for a US population :

$100,000,000 J/year\times 3\times 10^8=3\times 10^{16} J/year$

The yearly energy consumption for a US population of 300 million is $3\times 10^{16} J/year$

b) $E = m\times c^2$

E = Energy from converted mass of m

c = speed of light

Given mass of person = m = 60 kg

$E=60 kg\times (3\times 10^8 m/s)^2 = 5.4\times 10^{18} J$

c) Energy calculated in part (b) = $E=5.4\times 10^{18} J$

The yearly energy consumption for a US population of 300 million in an year = $3\times 10^{16} J/year$

Let the that would be supported by $5.4\times 10^{18}$ Joules of energy be x.

$x\times 3\times 10^{16} J/year=5.4\times 10^{18} J$

$x=\frac{5.4\times 10^{18} J}{3\times 10^{16} J/year}=180 years$

180 years would this amount of energy support a population of 300 million.

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