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4 years ago

Which have scientists learned from studying seismic waves that travel through earth’s interior?

2 answers:

8 0

What scientists learned about Earth by studying seismic waves is “They have learned the precise depths where the boundaries between the earth's layers are located”. The correct answer is C.

Scientists studied the seismic waves to be able to properly understand the Earth’s interior. Seismic waves refer to wave energy that moves through the Earth.

<h2>Further Explanation </h2>

Their movement is also typical or similar to other types of waves like water, light and sound waves.

These waves of energy travel through the earth during earthquakes and cause the ground to vibrate.

A seismograph is the type of machine used to record the speed and strength of Seismic waves. The recordings made available by seismographs are known as seismograms. The machines have made it possible for scientists to understand that the speed at which seismic waves move through the earth is different.

Seismic waves can, however, be divided into two, which include:

Body waves
Surface waves

Body waves move through the earth’s interior while the surface waves move through the earth’s surface. Surface waves are very important types of seismic waves but they don’t provide information as to what is going on in the Earth’s interior.

Therefore, what scientists learned about Earth by studying seismic waves is “Seismic waves are not affected by boundaries between earth's layers”.

LEARN MORE:

Which have scientists learned from studying seismic waves that travel through earth’s interior? brainly.com/question/769643
The seismic waves that travel through Earth’s interior brainly.com/question/6835759

KEYWORDS:

earth's layer
precise depths
body waves
seismic waves
earth's interior

gladu [14]4 years ago

6 0

"They have learned the precise depths where the boundaries between the earth's layers are located" is the one among the following choices given in the question that scientists have <span>learned from studying seismic waves that travel through earth’s interior. The correct option among all the options given is option "B". </span>

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3 years ago

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Two 10 kg pucks head straight towards each other with velocities of 10 m/s and -20 m/s. They collide and stick together. Calcula

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The final velocity of the two pucks is -5 m/s

Explanation:

We can solve the problem by using the law of conservation of momentum.

In fact, in absence of external force, the total momentum of the two pucks before and after the collision must be conserved - so we can write:

$m_1 u_1 + m_2 u_2 = (m_1 +m_2)v$

where

$m_1 = m_2 = m = 10 kg$ is the mass of each puck

$u_1 = 10 m/s$ is the initial velocity of the 1st puck

$u_2 = -20 m/s$ is the initial velocity of the 2nd puck

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Re-arranging the equation and solving for v, we find:

$mu_1 + mu_2 = (m+m)v\\u_1 + u_2 = 2v\\v=\frac{u_1+u_2}{2}=\frac{10-20}{2}=-5 m/s$

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3 years ago

An electron of mass 9.11 1031 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to

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Explanation:

It is given that,

Mass of an electron, $m=9.11\times 10^{-31}\ kg$

Initial speed of the electron, $u=3\times 10^5\ m/s$

Final speed of the electron, $v=7\times 10^5\ m/s$

Distance, d = 5 cm = 0.05 m

(a) The acceleration of the electron is calculated using the third equation of motion as :

$a=\dfrac{v^2-u^2}{2d}$

$a=\dfrac{(7\times 10^5)^2-(3\times 10^5)^2}{2\times 0.05}$

$a=4\times 10^{12}\ m/s^2$

Force exerted on the electron is given by :

$F=m\times a$

$F=9.11\times 10^{-31}\times 4\times 10^{12}$

$F=3.64\times 10^{-18}\ N$

(b) Let W is the weight of the electron. It can be calculated as :

$W=mg$

$W=9.11\times 10^{-31}\times 9.8$

$W=8.92\times 10^{-30}\ N$

Comparison,

$\dfrac{F}{W}=\dfrac{3.64\times 10^{-18}}{8.92\times 10^{-30}}$

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4 years ago

Study the interaction of the light rays with the mediums. Classify the medium in each image as being transparent or opaque.

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Answer:

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b) transparent

c) opaque

Explanation:

In the first one, the light rays go completely through, so it is transparent.

The second one I'm not too sure about. It is refraction so it's going through a different material, but the fact that it went through makes me say transparent.

Last one, the light rays are reflecting off the surface so it's opaque.

Please feel free to correct me if I'm wrong. This is just my understanding

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3 years ago

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<h2>Answer:</h2><h3>Part 1.</h3>

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So a cell divide into two giving two cells which further divides.

Even a whole organism come from the division of single cell which is made from the combination of an egg and sperm.

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DNA contains all the information necessary for a whole organism.

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Explanation:

Snake is the tertiary consumer in a food web and frogs and mice are secondary consumer while grasshopper is the primary consumer.

As the snake is removed from the food web the population of frogs and mice will increase due to the less pray of secondary consumers.

As frog and mice will increased they will eat more grasshopper making decrease in grasshopper population.

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As we know both blocks sink at the same rate. Hence both blocks have same density.

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Explanation:

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As the concentration of glucose increases the insulin lowers it. And as the glucose level concentration becomes too low then an hormone known as glycogen is release by pancreas which increases the glucose level in blood.

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8 0

4 years ago

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