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3 years ago

How long does it take the seismic waves to pass directly through the Earth?

Geography

1 answer:

lyudmila [28]3 years ago

8 0

Answer:

It ranges from 2 to 13 km/s depends upon composition.

Explanation:

The velocity of seismic waves are different throughout the earth because of different composition of the layers inside the earth. Velocity of seismic waves increases with depth and it is approximately 2 to 8 km/s in the Earth's crust whereas, 13 km/s in the deep mantle so it means the velocity of seismic waves is higher in the mantle as compared to earth's crust due to different composition of layers between the mantle and earth crust.

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What is the largest thing on earth

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3 years ago

Which class doubled in size during the years between 1900 and 1925?

Goryan [66]

Answer:

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Explanation:

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2 years ago

Hitler was born and raised in the nation of ________________.

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3 years ago

What is the English Channel?

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3 years ago

2. A 260 em cylinder container was used to collect an undisturbed soil sample. The container and soil weighed 403 g when dried.

sineoko [7]

Answer:

The Bulk density = 1.3 g/cm³

the porosity of the sample is 132 cm³

Explanation:

Given:

Volume of cylinder = 260 cm³

Mass of container and the soil = 403 g

Mass of the empty container = 65 g

Thus,

The mass of the soil is = 403 - 65 = 338 g

Now,

The Bulk density = $\frac{\textup{Mass}}{\textup{Volume}}$

The Bulk density = $\frac{\textup{338 g}}{\textup{260}}$

The Bulk density = 1.3 g/cm³

also,

average particle density for mineral soil is usually given as 2.65 g/cm³

i.e the air present in the given soil sample has reduced its density from 2.65 g/cm³ to 1.3 g/cm³

The mass of the whole sample = Volume × Density

= 260 × 2.65

= 689 gm

but,

The actual mass of the dry sample = 338 g

thus,

Mass of air in the sample = 689 - 338 = 351 g

Therefore,

the volume of 351 g soil = $\frac{\textup{mass defect of soil}}{\textup{density of soil}}$

= $\frac{\textup{351}}{\textup{2.65}}$

= 132.45 cm³

so the porosity of the sample is 132 cm³

4 0

3 years ago