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Which seismic waves are felt first at a seismic station

vlabodo [156]

Question-
Which seismic waves are felt first at a seismic station

Answer-
Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs.

There are several different kinds of seismic waves, and they all move in different ways. The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

BODY WAVES
Traveling through the interior of the earth, body waves arrive before the surface waves emitted by an earthquake. These waves are of a higher frequency than surface waves.

P WAVES
The first kind of body wave is the P wave or primary wave. This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth. It pushes and pulls the rock it moves through just like sound waves push and pull the air. Have you ever heard a big clap of thunder and heard the windows rattle at the same time? The windows rattle because the sound waves were pushing and pulling on the window glass much like P waves push and pull on rock. Sometimes animals can hear the P waves of an earthquake. Dogs, for instance, commonly begin barking hysterically just before an earthquake 'hits' (or more specifically, before the surface waves arrive). Usually people can only feel the bump and rattle of these waves.

P waves are also known as compressional waves, because of the pushing and pulling they do. Subjected to a P wave, particles move in the same direction that the the wave is moving in, which is the direction that the energy is traveling in, and is sometimes called the 'direction of wave propagation'. Click here to see a P wave in action.

8 0

3 years ago

What cell parts are common to all of these cells? Use complete sentences.

Natalka [10]

Answer:

between an animal cell and a plant cell there are some parts that are similar and carry out the same function like:

both have a cell membrane which selects what goes in the cell.

both have cytoplasm which holds the protoplasm(the living part of the cell)

both have a nucleus which carries out all cell activities and holds threads of DNA called chromosomes

both have a mitochondria which is the power house of the cell

both have golgi bodies which modify and carry proteins from sites of synthesis to sites of reaction

I hope this helps

4 0

3 years ago

Which biogeochemical cycle includes the exoskeleton and shells of marine organisms as a reservoir?

statuscvo [17]

Answer:

I think it is oxygen

Hope this helped

ALL THE BEST !!

7 0

3 years ago

For each of the genotypes (AA,Aa or aa) below determine what the phenotype would be Purple flowers are dominant to white flowers

larisa [96]

Answer:

Aa

Explanation:

The dominant gene is purple and usually represented with the capital letter while the recessive gene is white

5 0

3 years ago

Read 2 more answers

How could the nervous system cause a skeletal muscle to produce the most forceful contraction it is capable of?

defon

By triggering action potentials from every single motor neuron that regulates the muscle at a rate that causes tetanus in every fiber.

<h3>What are motor neurons, and what are they used for?</h3>

The central nervous system includes motor neurons, which are cells that transmit instructions from the nerves and muscles that control our movements, speech, swallowing, and breathing.

<h3>What makes it a motor neuron?</h3>

Motor neurons (also referred to as efferent neurons) are indeed the nerve cells responsible for carrying signals part of the peripheral nervous system towards muscles to cause movement. Neurotransmitters are released by them to set off reactions that cause muscle movement..

<h3>In the body, how many motor neurons are there?</h3>

There are around 500,000 of them, carrying information first from CNS to peripheral effectors throughout the peripheral tissues but instead organ systems. Motor neuron axons, or efferent fibers, convey information away from the central nervous system..

To know more about neurons visit:

brainly.com/question/24217914

#SPJ4

4 0

1 year ago