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What does the time-distance graph of seismic waves show?
The time-distance graph of seismic waves shows the relationship between the time it takes for seismic waves to travel and the distance they travel. It helps in determining the speed at which seismic waves propagate through the Earth's interior and provides information about the structure and composition of the Earth's layers.
How is seeismic waves measured?
Seismic waves are measured using seismometers, which detect the ground vibrations created by seismic events like earthquakes. Seismometers record the data in the form of seismograms, which show the amplitude and arrival times of different types of seismic waves such as P-waves and S-waves. By analyzing these seismograms, scientists can determine the characteristics of the seismic event and its location.
How can seismic waves be used to determine an earthquake's epicenter?
The epicenr can be found by location the sound in the waves carried.
Explain how seismic waves help scientists learn about earth interior?
Seismic waves bounce off things inside of the Earth, helping scientists figure out it's interior. An example is like if you taped a block in a box, put a marble inside of the box, and closed the lid. By tilting the box, the marble would roll and you'd get a pretty good idea where the block is located.
What does time-distance graph of seismic waves show?
Comparison of waves going through the solid inner core and those just skimming it can show the rotation of the inner core.
How do earthquakes reveal what the interior of the earth is like?
Earthquakes show us that faults are active and moving. Faults are boundaries between the tectonic plates that make up the Earth's crust. Earthquakes generally happen along faults. The plates move apart or alongside one another releasing energy that causes an earthquake. The energy released causes seismic waves. In fact the core of the earth was discovered with seismic waves. They bend along the interfaces of different materials. There are two different seismic wave types. P waves travel through fluids and solids. S waves travel only through solids. By noticing that the S waves did not go through the center of the earth, geologists came to the conclusion that its center must be a fluid, for S waves cannot pass through fluids. P waves bend in the core because they are slowly passing through a liquid. This has also helped them estimate the size of earth's core by studying the last shadow zone of the S wave.
3 How do earthquakes help us learn about the interior of the earth?
Earthquakes explain and support tectonic plate theory and show the movements of the plates over time. Fault lines also expose rock layers and allow geologists to study the rocks and the changes in the environment over time.An Earthquake gives out Seismic waves which. There are Primary Waves (P-Wave) and Secondary waves (S-Wave) The Secondary Seismic wave can't travel through liquid so when the sensors detect a wave and sees that some part the S-wave isn't going through a layer of the earth they know that that layer of the earth is Liquid.
How to read a seismograph and interpret seismic activity accurately?
To read a seismograph and interpret seismic activity accurately, first, understand that a seismograph records ground motion caused by earthquakes. Look at the seismograph's wavy lines, called seismograms, which show the intensity and duration of seismic waves. Identify the P-waves (primary waves) and S-waves (secondary waves) to determine the earthquake's location and magnitude. Compare the seismogram with data from other seismographs to confirm the earthquake's characteristics.
Is seismic waves indirect or direct evidence?
Seismic waves provide indirect evidence of the Earth's internal structure. They do not directly show us what is inside the Earth but instead allow scientists to infer the properties and composition of different layers based on how these waves travel and behave as they pass through various materials. By analyzing seismic wave patterns, researchers can deduce information about the Earth's core, mantle, and crust.
How do scientistS know that the earth's inner core is made of dense iron and it's outer core is liquid?
When eartquakes erupt only certaing wavelengths can travel through both liquids and solids, so when the scientists measure to see at what point in the earth the waves refract they can then tell what parts are solid and what parts are liquid
The shadow zone exists because?
sunlight blocks out S waves in certain regions.
How do scientists find out about the inner core of earth?
A seismograph is used to sense seismic waves in the earth. The seismic waves are sent down by scientist and how fast and how straight the line is when the seismograph reads them is how they tell which mineral or if its a liquid or solid. Which is how they know about the inner and outter core, and the mantel.
