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- From earthquake waves. There are 2 types of waves, p or primary waves and s or secondary waves that are generated when an earthquake occurs. Both types of waves move away from the epicenter of the earthquake in all directions including "down" through the layers of the Earth under the epicenter. Both waves start out at the same time from the same spot, but P waves move through the earth faster, hence the name primary waves. The farther the earthquake monitoring equipment is from the epicenter the bigger the lag time between when the p and s waves arrive. Monitoring stations on the side of the Earth opposite the epicenter do not receive any S waves. This is because S waves only move through solids so when the S waves hit the liquid outer core, the energy from these waves dissipates. When you move out far enough perpendicularly from the epicenter, S waves show up again on monitors. By overlapping these "shadow zones" from multiple quakes around the world, the depth at which the liquid outer core begins can be determined.
What else can I help you with?
Are the five layers of the atmosphere in earth or out of earth?
The five layers of the Earth's atmosphere are within the Earth, as part of the planet's atmosphere. These layers include the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
How do you know that the earth is in layers?
Scientists have determined the layers of the Earth by studying seismic waves from earthquakes. These waves travel through the Earth at different speeds and provide information about the density and composition of the different layers beneath the surface. By analyzing this data, scientists have been able to deduce the Earth's structure and layers.
Why havent people seen layers of earth below the crust?
People have not directly seen the layers of Earth below the crust because they are deep below the surface and covered by the crust and mantle. Most of the information about these layers comes from studying seismic waves and rock samples. Direct observations are limited to areas where the Earth's mantle is exposed due to tectonic activity or volcanic eruptions.
How are the layers of the earth held together?
The layers of the Earth are held together by gravity and the intense pressure from the weight of the overlying layers. This pressure causes the layers to be compacted and stick together, forming a solid structure.
What do we call the layers of gases that surrounds earth?
The layers of gases that surround Earth are called the atmosphere. The atmosphere is divided into several layers based on temperature and composition, with the troposphere being the layer closest to Earth's surface.
What group of people study earth layers and artifacts?
Archaeologists study artifacts while geologists study earth layers. Both disciplines can provide insight into the history and development of different aspects of the Earth.
How are layers of the earth related to the movement of the earth's tectonic plates?
it is a part of the EARTH layers.
How the layers of the Earth are related to the movement of the earth's tectonic plates?
it is a part of the EARTH layers.
How are the layers of the earth related to the movement of the earth's tectonic plates?
it is a part of the EARTH layers.
What is the layers on the earth layers?
the layers of the earth is crust (oceanic and continental), mantle and core (outer and inner)
What thing has layers?
The Earth's crust has layers, the atmosphere has layers, and certain types of cake have layers.
What are the 3 layers in the earth?
Crust, Mantle, and Core are the 3 layers in the earth.
Does earth have 4 layers?
No there are three layers. The crust, mantle, and the core. Most people thinks there are four layers because most people separate the outer and inner core, because the outer and inner core are very different.
How many layers are of the earth?
The Earth is typically divided into four layers: the crust, mantle, outer core, and inner core. These layers have different compositions and physical properties, and they play important roles in shaping the planet's structure and behavior.
Are the five layers of the atmosphere in earth or out of earth?
The five layers of the Earth's atmosphere are within the Earth, as part of the planet's atmosphere. These layers include the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
How many people live in earth now?
6 billion people live on Earth.
What layer is the thinnest of the earth?
The thinnest layer of Earth is the Lithosphere, also commonly called the crust.
