landfill site - an area where garbage is deposited and eventually buried., desertification  - the process in which deserts are formed through the erosion of nutrient-rich topsoil; after, the soil is no longer able to support plant life., permeate - of water, to drain through soil., texture - of soil, how it feels to the touch; affected by the size of the particles in the soil., leaching - the process by which materials from soil are dissolved and carried away by water., topsoil - the topmost layer of soil, which is dark-coloured and rich in humus., fertile - of soil, containing the nutrients needed for plant growth., humus - the dark-coloured part of soil that is rich in nutrients, such as nitrogen, phosphorus, potassium and sulfur., compost - the part of soil composed of dead plant matter., deposition - the process in which eroded material is deposited in another area., frost wedging - a process of mechanical weathering that occurs when water goes through a cycle of freezing and thawing; the water expands and contracts in the cracks of a rock, eventually breaking it apart., biological weathering - the break-up of disintegration of rocks through the physical or chemical effects of living organisms., chemical weathering - the break-up or disintegration of rocks through the effects of chemical reactions upon them., mechanical weathering - of rocks, the break-up or disintegration by the actions of physical forces such as wind, water and gravity., organic sedimentary rock - largely made up of once-living matter. ie. limestone., compaction - the process by which sedimentary rock is formed from sediemnt, through the wight and pressure of water and other sediment., beds - a layer of sedimentary rock., sediment - loose material such as bits of rock, minerals, and plant and animal remains., extrusive rock - the type of igneous rock formed when magma cools and solidifies above Earth's crust., lava - the term used for magma when it breaks through Earth's crust, as in volcanic eruption., intrusive rock - the type of igneous rock formed when magma cools and solidifies below Earth's crust., crystal - the building block of minerals; occur naturally and have straight edges, flat sides, and regular angles. , element - a type of purse substance that cannot be broken down into simper parts by chemical means and that has a unique set of properties., minerals - an inorganic, naturally occurring solid, can be elements or a compound. , particle size - of soil, the average size of the particles of various materials of which the soil is made.,

Science Chapter 10 Definitions PART 2

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