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William Gilbert, an English scientist, proposed that the Earth itself acts like a giant magnet with magnetic poles similar to those found in compass needles. He coined the term "magnetic poles" and laid the groundwork for understanding Earth's magnetic field. Gilbert's work helped pave the way for modern studies of geomagnetism.

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Idea that continents move slowly across earth's surface is called what?

The idea that continents move slowly across Earth's surface is called plate tectonics. This theory explains how the Earth's lithosphere is divided into plates that move and interact with each other, leading to processes such as earthquakes, volcanic activity, and the formation of mountain ranges.


Which is not an idea geologists use as they study Earth?

Studying Earth's history through fossils and sedimentation is not an idea geologists use. Geologists primarily focus on studying the Earth's structure, composition, and processes like plate tectonics and rock formation to understand its evolution and dynamics.


What evidence supports the idea that the earth is neither growing nor shrinking size?

The physical mass of Earth isn't changing. The amount of habitable land is shrinking due to rising seas & advancing deserts.


What was Earth's surface originally thought to have been?

Earth's surface was originally thought to be flat, based on early observations and beliefs. This notion persisted until evidence from explorations and scientific understanding supported the idea of a spherical Earth.


The idea that processes occurring now on Earth are much the same as those that occured long ago is called what?

The idea that processes occurring now on Earth are much the same as those that occurred long ago is called uniformitarianism. This principle suggests that the same natural laws and processes that operate in the present have always operated in the past to shape the Earth's surface.