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Daily Problem·Wednesday, 16 July 2025Back to today

Liquid outer core evidence

GCSE · Physics · AQA · P6.5Waves for detection and exploration (Physics-only): ultrasound, echo sounding, seismic P and S waves; layered structure of the Earth

Question

What evidence do we have that the Earth's outer core is liquid?

3 marks · take your time before peeking.

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