Astronomy1400 Final Exam Review

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part3

Which clues do we have about what triggered the collapse...form our solar system

radioactive isotopes...was triggered by a nearby supernova

(t/f) planets ultimately cool by giving off radiation which is explained by thermal emission

true

how was early atmosphere of earth primarily established?

volcanic outgassing

(t/f) we know that human activity is changing out climate because burning fossil fuels

true

why does earth have a N2 atmosphere instead of CO2

CO2 dissolves in oceans

why has earth been able to maintain stable climate

carbon dioxide cycle

why is neptune blue

methane

which of the following is NOT true about marse

three billion years water was locked up in polar ice caps

the temperature rises as you enter the stratosphere because of

absorption of UV light by ozone

what mechanism is most responsible for generating the internal heat of Io

tidal heating

which is NOT true to ganymede

moon that orbits venus

what is the driving force behind plate tectonics

convection in the mantle

do the oldest rocks on earth not meteoric accurately give age of solar system?

no

curiosity is

rover on route to mars

why do we find some exceptions to patterns of planets?

resulting from chaos that results from impacts

on which greenhouse warming strongest

venus

what is the seat of the magnetic field of Jupiter and Saturn?

large liquid metallic layer of hydrogen

how did lunar maria form

large impacts fractured moon; made hardened lava beds

what is NOT true in regard why jovian different from terrestrials

formed in part of nebula which contained only gas

(t/f) the sky appears blue because water vapor

false

on mercury we find all of the following EXCEPT

strong green house effect

olympus mons

largest volcano in the solar system which is located on mars

what about titan is not true

it orbits pluto in retrograde motion

where does the magnetic field of the earth

liquid outer metal core

the heavy bombardment phase of the solar system lasted

100 million yrs

where is water on venus

heat caused vapor; UV photo dissociation allows h to thermally escape

in a collapsing solar nebula, determine of planet jovian or terrestrial

temperature of solar nebula there

TRUE about frost line

jovian planets formed farther from the sun than frost lone

NOT true about NASA climate study

difficult to tell global warming

jupiter and saturn stripes are

result of convection cells

jupiter core vs earth core

1 millionx in size and mass

astroids and comets are

rocky and icy leftovers from planet formation

age of rock determined by

radioactive isotopes and their decay products

auroral displays when

charged particals from sun get trapped in earth's magnetic field

europa is an interesting celestial body because

there may be warm ocean there deeper than earth's deepest

when we observe stars in process of forming today there are found

within interstellar clouds of gas (nebula)

tritan

will someday break into pieces as it gets too close to neptune and its pieces will orbit neptune

what is NOT true of venus

active plate tectonics

what must happen to a planet for differentiation

at some time melted

comets that orbit in the same direction as planets orbit

kuiper belt

inner core of the earth is not

low in density-less than 1g/cc

which is NOT true of roche limit

if a space craft enters the roche limit it will be destroyed

FALSE surface geology of mars

mars has small standing pools of water

NOT true rings of Saturn

rings formed when Saturn formed will persist

why do we have ice ages

milakovitch theory

particles in plasma tortus that surrounds jupiter originates from

volcanos on moon io

formation of earth moon is due to

planetesmial impacted young earth`

cassini spacecraft discovery

geological activity in form of jets of water or steam from surface at the south pole

self-gravitating mon that enters into roche limit of jovian planet

it will be torn apart

why are there long tall cliffs called scarps

crust buckled as interior shrank as it cooled

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