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8th grade Earth Syst

TermDefinition
Adhesion A substance sticking to another surface, like Water sticking to a mirror.
Cohesion A substance sticking to another of the SAME substance, like water droplets merging.
Ground Water Water stored and flowing under ground, eventually getting into a lake, river, or ocean.
Heat Energy The energy found in the average speed of moving atoms. Faster atoms are hotter.
Specific Heat The amount of heat required to raise the temperature of a substance. Water has high specific heat.
surface tension The tension of the surface of a liquid that can support solid objects, like a paper clip on water.
Hydrosphere All the waters on the earth's surface, such as lakes and seas, rivers, and even the clouds in the sky.
Hydrothermal vents Volcanic vents under the ocean
Permeability The quality of a solid that allows liquids to get through it.
Photic Zone The upper most zone of the ocean that still receives sunlight.
Water Polarity Water has poles, like a magnet. Hydrogen atoms gives a slightly positive charge, the oxygen a slightly negative.
River Basin The region of land that feeds a river its water.
Bio-Indicators Sensitive living things, like insects and fish, that can help us determine the general health of a habitat with their presence.
Dissolved Oxygen The amount of oxygen in water as tiny gas particles (not part of the water molecule). Fish need this to breathe.
Environmental Protection Agency (EPA) Federally run agency that protects the environment through regulation and enforcement.
Nitrates A natural chemical that can pollute waters if there is too much. Can come from fertilizer and run off from farms.
PH level Scale of acidity from 0-14. low ph is high in acids, high ph is high in alkaline, and 7 is neutral and healthy for water.
phosphates Chemical that pollutes water, causing algae blooms.
potable water Drinking water, which is rare.
Salinity The amount of dissolved salt in water.
Turbidity A measure of how clear or cloudy water appears. High turbidity is foggy, muddy, or murky water.
Runoff Water that travels from one place to another on the ground, can cause flooding.
Tributaries A river or stream that runs into a larger body of fresh water.
Brackish water salty water that is fresher than sea water, like water in estuaries. Lower Salinity.
Chemosynthesis Some rare living things can make biomass from chemicals instead of sunlight. They live by hydrothermal vents.
Upwelling Nutrients rise on these cold underwater currents from the deep ocean to the shallow.
Nonpoint pollution pollution discovered in a wide area found in ground water or as sediments.
Point Pollution Pollution coming from a direct location, like an oil spill or fallen trash can.
Created by: preese
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