Both Radioactive dating of rocks retrieved from the world and Comparing cratering rates on one world to those on another.
Geologists can find the relative age of impact craters on a world because
the ones on top must be younger.
Scientists know the history of Earth's magnetic field because the magnetic field gets frozen into rocks, and plate tectonics spreads them out.
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Answer:
Generated by the motion of molten iron in Earth's core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun.
Answer:
A convergent plate boundary creates mountains, these mountains are formed by tectonic plate movement that results in the collision of two plates.
Explanation:
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To get more rocky and it will get bigger and taller
