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Answer:
Geologists use seismic waves to locate the center of an earthquake.
Geologists use data from three or more data stations to determine the location of the epicenter.
A seismograph measures the difference between the arrivals of P waves and S waves.
Explanation:
Seismic waves refer to the energy within the Earth due to sudden movement and explosions. Basically, they are the energy traveling within the Earth, and this energy cause movement, an excess of it will cause major movements, causing damage in the surface.
So, the epicenter of a earthquake is tracked using seismic waves, but this process more complex that we thought, because geologists need to track the epicenter using other data stations which offer real time information about seismic waves. Using all this data, geologist can find the epicenter faster and accurately.
There are different types of seismic waves, there's the Primary Waves or P-Waves, they are called primary because they are the first to perceive by the seismic station, they push and pull constantly, like a spring. Another type of seismic waves is The Secondary Wave or S-Waves, this is slower than the first one, this type of waves can moves mass of rocks up and down, constantly perpendicular to its direction. These two types are called body waves, and they are used by geologist to locate an earthquake.
Lastly, we have the surface waves, which only travel through the crust. In this category we have Love Waves which are the fastest, moving side to side. Also, we have the Rayleigh Waves, which are waves that roll the ground like ocean waves roll the water.
Therefore, based on these definitions, there are three correct answers, first, third and last one.
On the basis of definitions of seismic waves, we can conclude that the seismic waves are used to locate the center of the Earthquake, determine the location of an earthquake, and measure the difference between the arrival of P-waves and S-waves.
What are Seismic Waves?
Seismic waves refer to the energy within the Earth due to sudden movement and explosions. They are the energy traveling within the Earth, and this energy cause movement, an excess of it will cause major movements, causing damage to the surface.
The epicenter of an earthquake is tracked using seismic waves, but this process is more complex than we thought because geologists need to track the epicenter using other data stations which offer real-time information about seismic waves. Geologists can find the epicenter faster and accurately, using all such data
- There are different types of seismic waves, there are the Primary Waves or P-Waves, they are called primary because they are the first to perceive by the seismic station, they push and pull constantly, like a spring.
- Another type of seismic wave is The Secondary Wave or S-Waves, this is slower than the first one, this type of wave can move a mass of rocks up and down, constantly perpendicular to its direction. These two types are called body waves, and they are used by the geologist to locate an earthquake.
- Lastly, we have the surface waves, which only travel through the crust. In this category we have Love Waves which are the fastest, moving side to side. Also, we have the Rayleigh Waves, which are waves that roll the ground like ocean waves roll the water.
Thus, we can conclude that the seismic waves are used to locate the center of the Earthquake, determine the location of an earthquake, and measure the difference between the arrival of P-waves and S-waves.
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