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Combination of pressure and density in Earth core helps explain what?

Answer and explanation

Correct answer: Large mass and state of the core

The direct answer is option C, the large mass and state of the core. Density tells us how much mass is packed into a unit volume, while pressure tells us how strongly material is compressed. Earth’s core contains very dense metallic material, mainly iron and nickel, and experiences enormous pressure. Therefore pressure and density together help scientists understand why the core has a very large mass and why its inner and outer parts have different physical states. Option A, rainfall, depends mainly on atmosphere and water cycle, not core pressure and density. Option B, river bends, depends on slope, speed, erosion and deposition. Option C is correct. Option D, soil moisture, is controlled mainly by rainfall, soil and evaporation. Exam cue: core questions connect density with deep metallic matter and pressure with compression and state.

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CoreDensityPressure

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