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astronomy

earth stats

TermDefinition
motions of the earth Precession, revolution, rotation
Precession earths wabble (so little it's imperceptible)( 26 thousand years to “wable”)(will then be pointed at Polaris-star/ north star)
revolution, going around( the sun) (spins around the earth every 365.25 days)( leap year acors every 4 years)
rotation to spin (on an axis)
earths gravity is.... 9.8m per sec^2
earths tilt is... 23.5
earth travels... 17000 colomiters in space(speed up during winter and slows during summer)
equinox crosses celestial equator
1crust thiest layer ( granite and bisalt
4inner core solid iron, nickle
3outer coure liquid iron, nickle
2mantle semi-melted rock
sub structures crust + upper matle = lithospere (rigid)
lower matle asthenosphere (semi melted
both meal core produces a magnetic feild
magnetosphere protects from the suns radiatin/ created by both cores (gamma and xrays get deflected by magnetic feilds from the core uv/lv (filtered))
sun radiation gama radiation very small, x rays, UV (ulta violate) UVA (tanning) UVB(bad), VL (visible light hwite)(invisible light, IR(info red, MicrowW RadioW
x rays(give little radiation)e(smaller more dangerouse radiation))
1 troposhere all the gas lives / weather/ life/ 3 times the hight of mount everest/
2 stratosphere / o-zone/ protects from the UV/LV radiation
3 mesophere / coldest layer/ see merters(shooting stars/
4 thermosphere/ / see aurorus and satalites/ spikes in
1crust thinnest layer ( granite and basalt)
4inner core solid iron and Nickle
3outer coure liquid iron and Nickle
2mantle semi-melted rock
lithospere crust + upper matle /(rigid)
asthenosphere lower matle/(semi melted
5 exospher / exit of earth into spaace
Created by: Riveryve
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