Two models of the Earth have identical solid mantles. Model P has a solid outer core. Model Q has a liquid outer core. Both cores can transmit P-waves.
Which observation would distinguish between the models?
P-waves cross the mantle and are transmitted through the outer core.
S-waves are detected after travelling through solid rocks in the crust.
P-waves are detected after travelling through solid rocks in the crust.
S-waves cross the mantle but are not transmitted through the outer core.