Hot rock and liquid and solid metal.
Igneous
p-waves
Body wave
A seismic wave is a type of wave that travels through Earth's interior. These waves are generated by earthquakes or other disturbances and can be classified into two main types: body waves which travel through the Earth's interior and surface waves that travel along its surface.
The earth's interior is called the core.
If you mean Earth's interior, only longitudinal waves can pass through the liquid parts.
The interior of the Earth is slowly cooling.
Geologists study the Earth's interior. They also study the Earth's composition and all the processes that cause it to change.
Seismologists use seismic waves, specifically body waves such as P-waves and S-waves, to study the Earth's interior. These waves travel through the Earth at different speeds and can provide information about the composition and structure of the Earth's layers. By analyzing the behavior of these waves, seismologists can gain insights into the properties of the Earth's interior.
It helps keep the Earth's interior hot.
the three ways in which we know about the interior of the earth are:volcanoesearthquake waves-under the earthdrilling
P waves and S waves