Sunday, March 20, 2016

Geology Kitchen #13 - Feldsparty

Feldspars are the second most common group of minerals on Earth.  The are important contributors to soils as they weather relatively easily to form clays.  Potassium, Sodium and Calcium are the most common elements in Feldspars passed on to plants and animals, and are all elements critical to human life.

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Monday, February 18, 2013

Geology Kitchen #12 - Oil in the Kitchen

This episode introduces the concept of hydrocarbons (oil). A simulation of an oil reservoir is performed using peanuts and concepts of oil/water interaction are discussed.

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Monday, February 4, 2013

Geology Kitchen #11 - Igneous Rocks

Igneous rocks are rocks derived from the cooling of magma, molten material originating from the upper Mantle/lower crust. Igneous rocks are classified by their texture and their composition. Rocks ' textures range from fine-grained (extrusive/volcanic) or coarse-grained (intrusive/plutonic). Compositions range from silica-rich (felsic) to silica-poor (mafic).

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Monday, January 28, 2013

Geology Kitchen #10 - Volcanoes

Volcanoes form when magmas make their way to the Earth's surface and erupt. Volcanoes vary by type; cinder cones, stratovolcanoes or shield volcanos. The intensity of the eruption depends in part on the composition if the lava, and following, how much gas is contained within the melt and how viscous (reseitive to flow) the magma is upon reaching the Earth's surface. This episode demonstrates how the release of gas is an importance factor in the violence of a volcanic eruption through the classic baking soda-vinegar volcano, and a more modern analog with diet soft drinks.

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Monday, December 3, 2012

Geology Kitchen #9 - Plate Tectonics

This episode discusses the scientific theory of plate tectonics, in which the Earth’s crust is subdivided into a series of large and small tectonic plates. Convergent, divergent or transform boundaries are discussed and demonstrated with brittle graham crackers and icing to illustrate the motions of the plates at these boundaries.   A second demonstration consisting of heating cream in a pan, representing convecting upper mantle, driving a relatively brittle layer of cocoa powder (the Crust).

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