Final answer:
The geographer's primary concern with Earth's interior is related to its influence on Earth surface features, including the formation of mountains, valleys, and volcanic eruptions, all of which are the result of internal processes like plate tectonics.
Step-by-step explanation:
The main concern of a geographer regarding Earth's interior is its influence on Earth surface features. Earth's internal processes, driven by heat from the core and mantle convection, are responsible for a wide range of surface phenomena, such as earthquakes, mountain building, rift zones, and volcanic eruptions. These processes are all part of the plate tectonics mechanism that shapes the planet's surface over geological time scales. While the Earth's magnetic field is also generated by the core, and magma intrusions are related to the interior, the most direct concern of geographers is how the interior processes affect surface features and landforms.Seismic waves, used by scientists to study the Earth's internal structure, have revealed a silicate mantle and a metallic core. Furthermore, Earth's crust, consisting of continental granite and oceanic basalt, is constantly being reshaped by the action of plate tectonics, which is driven by the energy from the Earth's interior.In conclusion, understanding the dynamics of Earth's interior is crucial for geographers when examining the formation and alteration of Earth's surface features. It is these internal processes that largely dictate the topography and geography of our planet.