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Unformatted text preview: End moraine Terminal moraine Recessional moraine Drumlin Esker Kame Kettle Ice age – time period in which the earth’s climate is cooler and glaciers cover considerably more of the earth’s land surfaces than usual. Possible causes of glaciation Milankovitch cycles – variations in the earth’s orbit. Probably a minor influence. Variations in the shape of the earth’s orbit around the sun (elliptical) Changes in the angle of the tilt of the earth’s axis Wobbling of the earth on its axis (precession, like a top) Location of continents near poles (plate tectonics) Ocean circulation/current patterns (plate tectonics and water properties) Reflectance of materials on the earth’s surface (heat radiated back into space)...
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- Fall '09
- Glacier, glacial ice, Glaciology, lateral moraine, Medial moraine, end moraine