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SpyIntel [72]
3 years ago
14

When a fault slips and the rock units on either side return to their original shape by generating vibrations, it is called

Geography
1 answer:
nalin [4]3 years ago
8 0
The answer is b. elastic deformation
In geologically active areas, stress causes rocks to deform or stretch out. But when the stress  ends, the faults return back to normal through elastic deformation. They regain their original shape.
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Which of the following physical features are not caused by plate tectonics?
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Which of the following scale is the largest?
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Answer:

1 : 25,000 is the largest scale.

Explanation:

1 cm represents 2 km; is not correct because this is actually the smallest of the scales presented, meaning that 1 cm on the map is equal to 200,000 cm on the ground.

1 : 50,000; is not correct because this is the second-largest scale from the options.

1 : 25,000; is correct because it is the largest scale, with 1 cm on the map representing 25,000 cm on the ground. The smaller the scale, the larger it is.

1 : 100,000; is not correct because it is the third-largest, with 1 cm on the map representing 100,000 cm on the ground.

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3 years ago
Which is the main goal of social protections?
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Answer:

C. To prevent the suppression of Citizen rights in a country.

Explanation:

Social protections are offered from the government to protect the citizens while they are in another country.

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As a deep-water wave enters shallow water, the part of the wave in the shallowest water slows down. the deeper-water portion of
Afina-wow [57]

The answer is parallel.

To add, absolute water depth has nothing to do with the difference between shallow and deep-water waves. On the other hand, the ratio of the water’s deep to the wavelength of the wave is that one that determines it. A deep-water wave’s water molecules proceed in a circular orbit while the orbit of the molecules of shallow-water waves molecules’ orbit are elliptical.

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Analysis of a rock sample that it contains 6.25% of its original uranium-235. How old is the rock? How do you know?
Andrews [41]

Answer:

The age of the rock = 2800.6 million years = 2.8 billion years.

A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.

Explanation:

Half life of Uranium-235 = 700 million years (from literature)

The decay of radioactive substances follow first order reaction kinetics.

The general equation is given as

A(t) = A₀ e⁻ᵏᵗ

A(t) = Amount of radioactive substance left after a particular time = 6.25%

A₀ = initial amount of radioactive substance = 100%

t = time that has passed since the beginning = age of the rock = ?

k = decay constant

The decay constant is related to the half life (T) through the relation,

k = (In 2)/T

k = (0.693/700) = 0.00099 /million years

A(t) = A₀ e⁻ᵏᵗ

6.25 = 100 e⁻ᵏᵗ

0.0625 = e⁻ᵏᵗ

In e⁻ᵏᵗ = In 0.0625 = -2.7726

-kt = - 2.7726

t = (2.7726/0.00099) = 2800.6 million years

t = 2.8 billion years.

Hope this Helps!!!

7 0
3 years ago
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