May 31, 2010 SOL 6.1 experiment A test of a hypothesis under conditions established by the scientist. hypothesis Scientific guess prediction Making an inference about a future event based on current evidence or past experience inference Interpreting an observation. independent variable What you change to do the experiment. dependent variable What has changed as a result of the experiment. purpose The reason for doing the experiment 35 SOL 6.1 (continued) May 31, 2010 conclusion Hypothesis proved or disproved at the end of the experiment dichotomous key A guide used to identify organisms/based on like or unlike characteristics triple beam balance (scale) Instrument used to measure mass of an object. graduated cylinder Instrument used to measure liquid in milliliters (ml) 37 SOL 6.6 May 31, 2010 air Gases found in the atmosphere. air pressure A force that is the result of the weight of a column of air pushing down on an area. humidity A measure of the amount of moisture or water vapor in the air. troposphere 1st Layer of the atmosphere where weather occurs stratosphere 2nd Layer of the atmosphere where the ozone layer is found mesosphere 3rd Layer of the atmosphere where most meteors burn up thermosphere Outermost and hottest layer of the atmosphere 39 May 31, 2010 SOL 6.6 (continued) warm front cold front When arm air moves over cold air When cold air moves over warm air temperature The average amount of energy of motion in the molecules of a substance barometer Instrument used to measure changes in air pressure anemometer air mass cumulus cloud Instrument used to measure the wind speed A huge body of air that has similar temperature, humidity and air pressure throughout it A cloud that appears fluffy and is low to the ground and indicates fair weather. 41 SOL 6.6 (continued) May 31, 2010 stratus cloud Usually form in flat layers and cover all or most of the sky. cirrus cloud A cloud that typically has a feathery, wispy appearance and forms at high levels (made of ice crystals) ozone A form of oxygen that can form near the surface when exhaust pollutants react with sunlight. ultraviolet radiation Radiant energy from the sun that when exposed to is harmful to living organisms hygrometer Instrument used to measure the amount of moisture in the air humidity Moisture in the air front The area where the air masses meet and do not mix 43 SOL 6.6 (continued) stationary front occluded front May 31, 2010 Cold and warm air masses meet but neither has enough force to move the other A warm air mass is caught between two cooler air masses. maritime air mass Air masses formed over oceans. (moisture) continental air mass Air masses found over land (dry) tropical air mass Air masses that form in the tropics and have low air pressure. (warm) polar air mass Air masses that form in the northern and southern hemispheres and have high air pressure. (cold) cumulonimbus cloud Towering clouds with flat tops often producing thunderstorms. 45 SOL 6.6 (continued) weather vane thermometer rain gauge May 31, 2010 Instrument used to indicate the direction of air movement Instrument used to measure temperature. An instrument used to measure the precipitation 47 SOL 6.4 atom May 31, 2010 Smallest unit of an element that still has the properties of that element. proton A positively charged subatomic particle found inside the nucleus. neutron A subatomic particle with no charge found in the nucleus. electron A negatively charged subatomic particle found outside the nucleus. nucleus The center of an atom that is made up of protons and neutrons. atomic number The number found on the periodic table of elements that determines the number of protons. element A pure substance made up of only one kind of atom. 49 SOL 6.4 (continued) May 31, 2010 compound A substance made up of two or more elements that are chemically joined. matter Anything that has mass and takes up space (solid, liquid, gas) chemical equation A way to show a chemical reaction using symbols. chemical change A change in matter that produces new substances. physical change A change that alters the appearance of a substance but does not make the material change into another substance. 51 May 31, 2010 SOL 6.2 potential energy Stored energy. kinetic energy Energy in motion. renewable resources Energy sources that are available on an ongoing basis. nonrenewable resources Energy that takes a long period of time to form and once its depleted, they are gone forever. energy transformation When one form of energy changes into another form of energy. geothermal energy Energy from the Earth’s interior hydroelectric power Electricity produced from the flow of water. 53 SOL 6.2 (continued) May 31, 2010 solar energy Energy generated by the sun. tidal energy Energy produced from the rise and fall of tides. fossil fuels biomass A nonrenewable source of energy in the form of coal, oil, and natural gas. Energy found in nature such as agricultural crops and residue, wood and wood waste, animal waste, aquatic plants, and organic components. Wind energy Energy of moving air. 55 May 31, 2010 SOL 6.3 solar radiation Energy from the sun that is made up of different types of radiation (including infrared, visible light, and ultraviolet) . wavelength The distance between one point on a wave to the corresponding point on another wave in a series. ultraviolet rays Harmful rays from the sun. visible light The colors of the rainbow, the only light that we can see. infrared radiation Form of radiant energy that travels in wavelengths, not visible, and felt as warmth. reflection Transfer of energy of light waves from one object to another. absorption Transfer of energy of light waves from one object to another. 57 SOL 6.3 Greenhouse Effect convection electromagnetic spectrum May 31, 2010 The natural heating process of a planet, such as Earth, by which gases in the atmosphere trap thermal energy. The transfer of thermal energy by the movement of liquid or gas (fluid). Displays forms of energy that can travel through space as wavelengths. 59 SOL 6.5 universal solvent solute adhesion cohesion density surface tension solvent May 31, 2010 The idea that a large number of substances will dissolve in water. The part of a solution present in a lesser amount and dissolved by a solvent. The unique property of water whereby water molecules stick to other substances. The unique property of water whereby one water molecule sticks to another water molecule. The amount of mass in a given space. The tightness across the surface of water caused by the polar water molecules pulling on each other. The part of a solution that is present in a largest amount and dissolves a solute. 61 SOL 6.7 ecosystem May 31, 2010 Made up of living community and the nonliving factors that affect it. biotic Living organisms in an environment abiotic watershed wetland estuary erosion Nonliving factors of an environment The land area that supplies water to a river system An area of land that is covered with a shallow layer of water during some or all of the year (example: swamps, marshes, bogs) A coastal inlet or bay where fresh water mixes with salty ocean water The process by which water, ice, wind, or gravity moves fragments of rock and soil 63 SOL 6.7 (continued) swamp marsh May 31, 2010 A tree dominated wetland where the soil is saturated or flooded with water during most or all of the year. A wetland characterized by soft, wet, low-lying land and having an abundance of emergent vegetation. bog A poorly drained wetland dominated by moss and shrubs dissolved oxygen The amount of gaseous oxygen in the water, measured in parts per million turbidity Indicator where a muddy look is created by suspended sediment or foreign particles. salinity The total amount of salts in a water sample. 65 SOL 6.7 (continued) May 31, 2010 tributary A stream that flows into a larger stream sediment Small, solid particles of material from rocks or organism which are moved by water or wind, resulting in erosion. transition zone the brackish area where fresh and saltwater inter mix habitat water quality pH The place where an organism lives and that provides the things it needs to live or survive. The degree of purity of water, determined by measuring the substances in water, besides water molecules. A scale used to determine how acidic or basic a substance is ranging from 014 67 May 31, 2010 SOL 6.9 renewable resources A resource that is naturally replaced in a relatively short time. nonrenewable resources A natural resource that is not replaced as it is used. conservation preservation SPSA EPA Inland Game and Fisheries The process of using a resource wisely so it will not be used up. The process of keeping up or maintaining. (Southeastern Public Service Authority) Waste management (Environmental Protection Agency) Federal Agency that regulates protecting human health and with safeguarding the natural environment established to ensure that all species of wildlife and aquatic resources are maintained, regulated and protected 69 SOL 6.8 meteor asteroid May 31, 2010 A streak of light in the sky produced by the burning of a meteoroid in Earth’s atmosphere. Any of thousands of dense rocky objects typically in orbit around the sun between Mars and Jupiter. comet revolution rotation A ball of ice and dust and frozen gases and in orbit around the sun in an elliptical orbit The movement of an object around another object. The spinning motion of a planet about its axis. outer planets Jovian planets that are gaseous, found outside of the asteroid belt (except Pluto-solid) inner planets Terrestrial planets are dense solid planets inside of the asteroid belt 71 SOL 6.8 (continued) gravity axial tilt probe satellite Heliocentric Theory Geocentric Theory tides May 31, 2010 The attractive force between two objects The invisible axis that are tilted allowing for seasons to occur. An interplanetary spacecraft Any object that revolves around another object in space. The theory whereby the Sun is found at the center of the Solar System (Copernicus) The theory whereby the Earth is found at the center of the Solar System (Ptolemy) The daily rise and fall of the Earth’s waters due to the gravitational force created by the Moon and Sun on the Earth 73
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