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science ND-Beth 8th

science studyguide

a planet turning on its axis rotation
a planet following an orbit around a star revelation
first to study the solor system and though earth was in center motionless and thought earth was flat greeks
disproved earth was flat aristotle
invented the geocentric model, thought earth is in center and planets in perfectly circular orbits tolmy
invented the heliocentric model thought earth was in center and earth was only planet copernicus
discovered jupiters largest moons galileo
used tycho Brahes data and proved planets travel in ellipses kepler
layers of the sun in order core,radiation zone, convection zone, photosphere, chromosphere, corona
the center of the sun, cite of nuclear fusion. core
small mass of nuclei unite into larger nuclei nuclear fusion
thickest layer of the sun and tightly packed with He atoms radiation zone
energy moves particle to particle toward surface in a convection current convection zone
visible surface of sun photosphere
the "colored sphere" and 1st layer of sun's atmosphere not visible cromosphere
outermost layer of suns atmosphere, looks like halo only seen during eclipses corona
areas on the sun that are cooler than surrounding surface,blackspots,always in pairs,usually near a solar flare,11year cycle sunspot
occurs when solar wind enters earth's atmosphere and changes into colored lights aurora
steady stream of electrical charged particles coming off the sun solar wind
closest to sun,i year=1u1/2 earth years ,surfaace covered with craters, no atmosphere, no satellites wimpy magnetic field,has temp extremes(430C to -180C) mercury
2nd from sun,3rd brightest object in sky,"green house effect caused by thick clouds,orbits 2nd closest to earth,CO2 based atmosphere,no satellites,retrograde motion venus
surface is dry+dusty+desertlike,similar axis tilt,polar ice caps,1/2 diameter of earth,thin CO2 atmosphere,2 moons(phobos + deminos),hase canyons on surface,largest surface feature in system mars
largest planet,failed star,gives off more energy than receives from sun,"fake" magnetic field,16 moons,12 earth years to orbit sunhome of Great Red Spot jupiter
2nd largest overall,dramitic ring system made of ice and dust,rings are wide but thin,31 moons,29 earth years to orbit sun Saturn
Saturn's largest moon,larger than pluto and mercury,N atmosphere titan
4x diameter of earth,mostly H+He, fun leaf color aquamarine,16 hour day,ring system, strange axis tilt,21 moons. uranus
4x diameter of earth,mostly H+He, bright blue,18 hour day,ring system,"scooter" the dark spot,8 moons neptune
coldest place in the solar system,-200C liquid nitrogen triton
recently demoted to dwarf planet>:(,only 3000 km,density?,believed to be frozen Ne,Ar,Kr, has 1 moon-Charon,A|K|A dual planet,248 years to orbit sun,extreme elliptical orbit,crosses orbite with neptune,believed to be stolen from kuiper belt pluto
comet nursery,collection of comet nuclei,just past pluto Oort cloud
cloud of dust+gas in space,created by supernova,building blockes for celestial objects nebula
can only happen in large mass stars,unstable fussion causes explosion,creates nebula,heavy elements are created during explosion supernova
Hertzsprung Russel,uses star color and temp to gain info on stars,color is result of temp H-R Diagram
dirty snowball comet
an object with gravity so strong not even light can escape,result from imploded neutron star, black hole
quasi stellar radio source, discovered in 1960,most distant and fastest moving objects known, quasar
collection of stars that seem to make a pattern constellation
matter that gives off no electromagnetic radiation,23% of all matter dark matter
a substance that cant be broken down into simpler substance w/o loosing its properties element
two or more elements chemically combined compound
1-10 scale where 1 is softest and 10 is the hardest Moh's scale
how the surface of a mineral reflects light luster
true color, the color of the powder created when the mineral is scratched along porcalin streak
a mineral that breaks along an irregular surface-different each time fracture
heating the mined rock to separate the ore from junk rock smelting
mixture of two or more elements w/ atleast 1 metal alloy
three main types of rocks igneous,sedamentary,and metamorphic,
formed from fire, two types intrusive and extrusive igneous
presence of layers,makes up over 75% 0f rocks on earth,most start out as igneous sedimentary
formed by heat and pressure,2 divisions foliated and nonfoliated metamorphic
a tabular display of the chemical elements, organized on a basis of their properties. Periodic Table
any mineral mined for profit ore
the number of protons atomic number
part of an atom with a +-charge protons
part of an atom with a - charge electrons
part of an atom with a neutral charge neutrons
the electrons that form the bond valence electrons
the brightness of a star as it is viewed from earth apparent magnitude
true brightness of a star,luminosity if all stars were equal distance from earth absolute magnitude
Created by: dominator11