The Moon shows no evidence of plate tectonic processes, nor has it been volcanically active for billions of years. What does this observation imply about the state and temperature of the interior of that planetary body?
How do the existence of Earth’s magnetic field, iron meteorites, and the abundance of iron in the cosmos support the ideas that Earth’s core is mostly iron and that the outer core is liquid?
How would you use seismic waves to find a chamber of molten magma in the crust?
How does seismic tomography answer the question, “How deep do subducted slabs go before they are recycled?”
Where in the mantle might you look to find regions of anomalously low S-wave velocities?