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BSS ESC11 CH 8-12 vocab
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32
Science
11th Grade
12/10/2008

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Term

Carbonic Acid

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Definition

An unstable acid formed by dissolving carbon dioxide in water. It is the basis of carbonated beverages and contributes the negative ion to carbonate salts.

Term

chemical we[image]athering 

Definition

 

Chemical weathering  is the process by which rocks are decomposed, dissolved or loosened by chemical processes to form residual materials. Some of the proc

Term

Creep

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Definition
Soil creep is a slow process based on wetting and drying (or freezing and thawing) cycles. Its signs are subtle, but building designs must account for it.
Term

Erosion

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Definition

Erosion is the carrying away or displacement of solids (sediment, soil, rock and other particles) usually by the agents of currents such as, wind, water, or ice by downward or down-slope movement in response to gravity or by living organisms (in the case of bioerosion).

Term

exfoliation

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Definition
Exfoliation joints or sheet joints are surface-parallel fracture systems in rock often leading to erosion of concentric slabs. 
Term

Hydrolysis

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Definition

Hydrolysis is a chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions

Term

ice wedging

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Definition

When water infiltrates fractures in rock and freezes, the force of expansion is great enough to break
the rock into smaller pieces.

Term

chemical weathering

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Definition
Weathering is the decomposition of earth rocks, soils and their minerals through direct contact with the planet's atmosphere[1]. Weathering occurs in situ, or "with no movement", and thus should not to be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, wind, and gravity.
Term

Mass movement

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Definition
Mass movement  is the down slope movement of earth materials under the influence of gravity
Term

mechanical weathering

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Definition
As stated earlier mechanical weathering involves the breaking down of rocks due to a kind of pressure exerted on the rock, which can be due to various reasons. The primary method of mechanical weathering is the alteration in size that the particle would go through and it would definitely grow smaller with weathering. Here are the types of Mechanical Weathering.
Term

Mudflow

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Definition
A mudflow or mudslide is the most rapid (up to 80 km/h / 50 mph) and fluid type of downhill mass wasting. It is a rapid movement of a large mass of mud formed from loose earth and water. Similar terms are debris flow (e.g. in high mountains), mudslide (not very liquid) lahars and mud stream (e.g. from volcanoes; see also lahar).
Term

oxidation

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Definition
OxidationOxidation is defined as the interaction between oxygen molecules and all the different substances they may contact, from metal to living tissue. Technically, however, with the discovery of electrons, oxidationoxidationoxidation came to be more precisely defined as the loss of at least one electron when two or more substances interact. Those substances may or may not include oxygen. (Incidentally, the opposite of oxidationoxidationoxidation is reduction — the addition of at least one electron when substances come into contact with each other.) Sometimes oxidationoxidationoxidation is not such a bad thing, as in the formation of super-durable anodized aluminum. Other times, oxidationoxidationoxidation can be destructive, such as the rusting of an automobile or the spoiling of fresh fruit.
Term

Parent material

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Definition
Parent material, in soil science, means the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form. Soils typically get a great deal of structure and minerals from their parent material. Parent materials are made up of consolidated or unconsolidated mineral material that has undergone some degree of physical or chemical weathering.
Term

Residual Soil

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Definition
The soil that is remaining after the soluble elements have been dissolved
Term

soil erosion

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Definition
Erosion is the carrying away or displacement of solids (sediment, soil, rock and other particles) usually by the agents of currents such as, wind, water, or ice by downward or down-slope movement in response to gravity or by living organisms (in the case of bioerosion).
Term

soil profile

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Definition
Soil formation begins first with the break down of rock into regolith. Continued weathering and soil horizon development process leads to the development of a soil profile, the vertical display of soil horizons. Watch the typical progression of a soil profile then read the description below of a generic, fully developed soil.
Term

subsoil

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Definition
Subsoil (also called substrata) is the layer of soil under the topsoil on the surface of the ground. The subsoil may include substances such as clay and has only been partially broken down by air, sunlight, water etc., to produce true soil. Below the subsoil is the substratum, which can be residual bedrock, sediments, or aeolian deposits, largely unaffected by soil-forming factors active in the subsoil. It contains partially weathered particles.
Term

topsoil

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Definition
The soil on the Top
Term

transported soil

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Definition
The transportation of soil is made up of 3 stages. The first stage is weathering, or the breakdown of materials. The second stage is erosion, or the transport of materials. The third stage is deposition, or the dropoff of material.
Term

weathering

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Definition
Weathering is the decomposition of earth rocks, soils and their minerals through direct contact with the planet's atmosphere[1]. Weathering occurs in situ, or "with no movement", and thus should not to be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, wind, and gravity.
Term

aquifer

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Definition

An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology. Related terms include: an aquitard, which is an impermeable layer along an aquifer, and an aquiclude (or aquifuge), which is a solid, impermeable area beneath an aquifer. The surface of saturated material in an aquifer is known as the water table.

Term

artesian formation

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Definition
water underground
Term

evapotranspiration

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Definition
picture says more then worlds ever could
Term

geysers

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Definition
a pressure releaser for earth
Term

hydrosphere

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Definition
A hydrosphere (from Greek ύδωρ - hydor, "water" + σφαίρα - sphaira, "sphere") in physical geography describes the combined mass of water found on, under, and over the surface of a planet.
Term

impermeable

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Definition
cannot be passed threw
Term

permeability

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Definition
somewhat passable
Term

 porosity

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Definition
the amout of empty space within an object
Term

recharge

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Definition
a hydrologic process where water moves to groundwater
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