Scientists send seismic waves through the earth. These travel at different speed according to the density of the material that they travel through. When they bounce back, scientists use these data to guess what the earth is made up of.
Data from the measuring of reverberations of earthquakes. Shear vibrations cannot pass through the core, and the different compositions of the layers of the earth cause a change in the direction and speed of seismic waves.
They believe when Earth was formed, it was a hot ball made up of mixture of rock and as the Earth start to cool, the heavier parts sanked to the inside as the lighter parts rose to the top.
Much of what is known about the earth's layers comes from measuring seismic waves caused by earthquakes or massive explosions. As these waves move through different substances, their properties change, allowing scientists to estimate the depths and compositions of different layers of the earth.
At the surface the layers can be seen and mapped directly. in the body of the earth near the surface drilling is possible to determine the layers but as one goes deeper still one relies on seismic information and modeling.
Because they think that the Earth started with a huge volcano and over time it formed layers to the point of having the earth.
one we have an earth quick seismic waves go through earth and they can tell were seismic wave bounce off earths inner core and were they go around.
because the earth as it builds up over time new layers formed from the techtonic plates each layer probobly has their own plates but not discovered yet and when convergent bounderies made mountains and more land, the earth made new layers that were capable of living on
Scientists used seismic waves to discover the layers of Earth.
no
explain the layers of the equatorial forest
4
dust and ice and other partcials
because the earth as it builds up over time new layers formed from the techtonic plates each layer probobly has their own plates but not discovered yet and when convergent bounderies made mountains and more land, the earth made new layers that were capable of living on
which layers of the earth have scientists been able to explore
The methods the geologists used when they first developed the geologic time scale. Were studying rock layers and index fossils worldwide. By Patrick
Scientists used seismic waves to discover the layers of Earth.
no
explain the layers of the equatorial forest
Meteorite. An asteroid is probably a better description of the thing that hit Earth.
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Scientists determined that the Earth has layers through studying how seismic waves travel. These seismic waves differed depending on how thick the layer was.
Scientists first developed the geologic time scale by studying rock layers and index fossils worldwide. With this info. (information if you forget!), scientists placed Earth's rocks in order by the relative age.
Geologists