E THROUGH H: •
Effusive eruption – this is when a volcano erupts, giving rise to hot and liquid lava rather than gas and ash.
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Erratic – this is a large rock or boulder carried a long distance from its origin after having been deposited by a retreating glacier.
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Estuary – the part of a river's mouth that experiences tides.
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Erosion – this is different from weathering and happens when moving ice, wind, or flowing water breaks down rock.
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Exfoliation – this is when surface rock is peeled away over time from weathering, layer by layer.
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Explosive eruption – this is when a volcano erupts to give rise to gas, bombs of pumice, ash, and other thick materials.
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Extrusive rocks – these are rocks that are made from eruptions of something at the surface of the earth.
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Faults – these are deep lines in the earth where movement of large chunks of earth can happen. Expect to see different rock types on either side of any Faultline.
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Feldspar – this is a common type of mineral you might see in igneous and sometimes in metamorphic rocks.
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Fine-grained rocks – these are those where the grains in the rock are too small to be seen with the naked eye. These are less than 0.1 mm in diameter.
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Floodplain – this is the flat land around a river or floor of a valley that can easily flood after a heavy rainfall.
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Folds – these are places where rock layers are bent through the compression by other rocks. This is how mountains get built at the time tectonic plates collide with one another.
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