| Term | Definition |
|---|
| association neurons | connects sensory and motor neurons |
| cerebrum | largest part of the brain, thinking and awareness originate here; also some voluntary movement; located in upper part of the head |
| cerebellum | located behind and below the cerebrum; it maintains the body's sense of balance and coordinates muscular activity |
| medulla | located at base of scull; controls breathing, heartbeat, muscular action OF THE DIGESTIVE TRACT |
| synapse | space between two neurons |
| ganglion | a relay station for autonomic nerves |
| spinal cord | thick bundle of nerves extending from brain through back bone |
| reflex | is always involuntary |
| behavior | how a person acts |
| brain | major control center for your nervous system |
| thyroid | main gland that regulates metabolism |
| pancreas | produces insulin |
| pituitary gland | the master gland; located at the base of brain |
| adrenals | located just aboce the kidneys; produce hormone that regulates blood sugar level |
| central nervous system | consists of the brain and spinal cord |
| peripheral nervous system | carries impulses to all parts of the body |
| nerves | cells that carry messages throughout the nervous system |
| motor neurons | cells that carry messages from the central nervous system to specific body organs |
| endocrine system | made of ductless glands that produce hormones |
| radiation | the transfer of energy by waves |
| wind | the movement of air from one place to another because of difference in air pressure |
| nitrogen and oxygen | two most abundent gasses in earths atomosohere |
| ionosphere | part of the thermosphere |
| anemometer | messures wind speed |
| atmosphereic pressure | the measure of air molecules pressing down on a specific point |
| atmosphere | a blanket of air that surounds the earth |
| conduction | the transfer of energy through actual contact of molecules |
| coriolis effect | makes the wind from the poles go left or right, avoinding the equator |
| wind vane | indicates wind direction |
| convection | transfer of energy due to difference in density |
| thermosphere | highest lair of atmosphere |
| mesosphere | second to last lair of atmoshpere |
| stratosphere | middle lair of atmosphere |
| tropopause | second lair of atmosphere |
| troposphere | lowest lair of atmoshpere |
| doldrums | nearly windless zone near the equator |
| green house effect | process by which heat is trapped by gasses in earth's atmophere |
| coriolis effect | an apparent force caused by earth's rotation that deflects winds |
| polar easterlies | cold, dry winds located between about 60 and 90 north nd south latitudes |
| prevailing westerlies | winds responsible for much of the movement of weathere across the United States |
| trade winds | winds blowing toward the equatorthat force air in the doldrums aloft |
| wind farm | clusters of wind turbines wsed to generate electricity |
| wind turbine | a windmill connected to a generator that produces elecricity |
| burning fossil fuels | cause of haze |
| smog | combination of smoke and fog |
| photochemical | brown smog formed with the aid of light |
| nitrogen compounds | heat from burning fossil feuls |
| sulfurous smog | creation of burning fossil feuls in power plants |
| ozone | a reaction of sunlight with waste gases |
| sulfuric acid | the combination of acid rain and emissions from coal furning power plants that combine with moistuere |
| exhaust from cars, emissions from coal-burning power plants, and emissions from airplanes | causes of acid rain |
| pH scale | a scale that measures the strenght of an acid can be obtained using |
| air pollution | something that affects lungs eyes hearts |
| using less electricity | a way to support the Clean Air Act |
| mountains | sometimes blocks air circulation |
| using scrubbers | one way to control air poolution |
| using public transportation | a way for individuals to improve air quatility |
| proton | a positivly charged atom |
| atom | a building block of matter |
| atomic number | the number of protons |
| periodic table | a table in which all of the elements are orginized into |
| suspension | a heterogenous mixture in which the particles of one material are wupposrted in a liquid |
| neutron | an atomic particle that has no electrical charge |
| physical | a kind of property that may be abserved without changing the chemical composition |
| substance | a kindof matter that is always the same in composition |
| formula | a list of the elements in a compound in exact ratios |
| solvent | the substance in which a solute is dissolved |
| mass number | the number of protons and neutrons in an atom |
| solute | the substancebeing dissolved in a solution |
| mixture | a combination of substances fromed without a chemical reaction |
| chemical | a kind of property that determines how a substance reacts to form other substances |
| compound | a substance made of two or more elements whose atoms ore chemically combined |
| electron | a negativly charged atom |
| solution | a homogeneous mixture |
| nucleus | the core of an atom |
| element | a substance made of just one type of atom |
| molecule | a particle that forms when atoms of some elements share electrons |
| ion | an atom or group of atoms that has gained or lost an electron |
| two ways to list elements | atomic number, and atomic sturcture |
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