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The earth, its relation to the stars and planets, and speculations as to its origin attracted human curiosity long before the birth of the geological sciences. Although such studies fall more properly within the realm of astronomy,’ a brief survey of the earth and its planetary relations will provide the reader with some understanding of […]

A Closer Look at Light

*Astronomers analyze light from objects in space in order to learn about the composition and movement of the objects. After today’s lecture, you should be able to: – Describe the characteristics of electromagnetic radiation. – Explain ways of analyzing light in order to get information about stars. – Explain the Doppler Effect and how it […]

How Rocks Form: Igneous R...

Why study rocks? -Many, many uses! – writing tools (chalk, pencils), building materials (marble, concrete), fuels (coal), scouring powder (pumice, sand), weapons (flint, obsidian) Rock: a group of minerals bound together – found in the Earth’s crust and mantle The Rock Cycle: the continuous process of rock formation and change – Presents a “map” of […]