Question

(b) what does this tell us above the structure of the earth?

Explanation:

Assuming the circle represents the Earth's cross - section (like in models of Earth's layers), if a shape was left clear (maybe representing the core or a layer), it tells us about Earth's internal structure. Earth has a layered structure: crust, mantle, outer core, inner core. The clear shape might represent a distinct layer (e.g., the core is denser, metallic, and different from the mantle). So this diagram (with the clear shape) implies Earth is not uniform but has distinct internal layers with different properties (composition, density, state - solid/liquid).

Answer:

This tells us that the Earth has a layered internal structure (e.g., crust, mantle, core), with distinct regions (represented by the clear shape and other parts) that differ in properties like composition, density, or physical state (solid/liquid).