<span>Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs.
Source: OS</span>
Answer:
washboard, De Geer, push, ice-thrusted
The answer is: waterfalls can usually be found wherever there is lots of erosion or where there is steepness in the river's channel.
Earth has a liquid outer core because that's the ocean and the earth is mostly made up by water.The earth has a solid inner by the mantle which is hard rock and made out of gas and rocks and it is very hot out there
