Question

How do we know that some layers of the earth are solid and some liquid?
@iambatman @ganeshie8 @Kainui

Answer 1

We used drills

Answer 2

And earth quakes help to, actually you can prob learn more about this if you read about it here: http://scienceline.ucsb.edu/getkey.php?key=3249

Answer 3

It seismic waves are one of the top reasons (caused by earthquakes)

Answer 4

what type of drills?
@iambatman

Answer 5

@iambatman

Answer 6

Idk big drills, you should really do this research yourself.