Unit 1 Physicals Enviroment Earth Formation

hasanahatesenglish's version from 2015-06-23 01:15

Section 1

Question Answer
Big bangsingle point of energy explodes constantly
spontaneus combustionmultiple big bangs over time. galaxies, solar systems, planets and earth
Nebula hypothesisnebula - a celestial body of cloud like appearance of immense size consisting of gas dust rocks particulate (merteors, asteroids)
Galaxy formationwithin the milky way, lumps of gas contract to produce stars. not all dust/gas settle into stars, becomes a whirling disc around the star. one of the stars became our sun. there is lots of stars in the milky way
our solar system formationthe particles around the sun continued swirling and collected together with heavy particles (the dust) settling towards our sun, lighter particles (the gas) settled further from the sun
the inner regions become the solid rocky inner planets
other regions becomegaseous giants (outer planets
jupiter, saturn, uranus, neptuneare made of gas
pluto is now considered either a planet vs random sphere
mercury venus earth marsare closest to the sun and all simular
jovial planetsjupiter saturn uranus neptune, gaseous giants (h, he)

Section 2

Question Answer
A)Earth began as large cloud of particles, rocks and dusts, combined with other particles about 4.5 billion years ago
B)heat produced by continuous collision of particles within the surface, earth heated up and become liquid rock molten
C)eventually earth cooled, heavier elements inside magma settled toward the center bc gravity
D) lighter layesr (silica based rocks - granite crystal, quartz) settled on the surface and above dense inner core
E) lighter elements (gases- 02 and water vapour - h20) settled above the surface of the planet
F) earth cooled off w/ thin layer of silicion magnesium and iron, developed the whole cart 8-15 km thick, called the SiMA
G)floating on top of sima is silicon and aluminum rock made paton, called the SiAL of which the continents are made
H) hydrogen and oxygen (h20) began to condense onto the surface of the earth in the form of rain, condensation was so intense it left massive puddles in low lying areas, which we call our oceans
I) The lightest elements (oxygen nitrogen hydrogen rose up out of earths materials and formed out atmosphere

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