earth science quizlet unit 12- the specific version, recomended one for studying
when was the oort cloud theorized in?
1950
what year was the kuiper belt discovered in?
1992
The Great Red Spot has been seen by Earthly observers for more than _ years.
300 years
Mercury is approximately _ the size of Earth.
38%
tempature on mercury during the day
450° C
jupiter is the _th brightest object in the sky
4th
mars is wind and dust stoms occur for ____
months
satilites (natural)
moons, variously sized objects orbiting the planets
In this early phase all the planets were the size of ____ and the composition of ____
neptune;jupiter
how long is jupiters day and year?
10 Earth hours long and its year 12 Earth years long
how far out does the oort cloud go till?
100,000 AU
jupiters size compared to earth
11 times the size of Earth
how many satilites (natural)(moons) are there
130 +
Pluto's orbit deviates the most from the plane of the ecliptic with an inclination of ____ degreese
17
Earth is _ AU from the Sun, while Mars is about _, pluto is about_
1;1.5;30-50 AU
how long is a day on mercury
2 months
jupiters core is probably about ____ degreese celcius
20,000° C
A day on Venus is longer than its year, taking ____ Earth days to rotate
243
the canyon on mars stretches how many miles long?
3,000
how many miles is the base of the largest mountain in the solar system?
300 miles
on mars at night, most areas cool to _ degreese celcius
-100° C.
tempature on mercury during the night
-180° C.
The ecliptic is inclined only ____ degreese
7
There are strong (200 mph) ____ on venus
winds
does mars have the same length of hours in a day?
yes mars is day does have the same length of hours in an earth day
does jupiter have rings?
yes, but they are very faint
on mars, no tempature rises higher than _ degreese
0 degreese celcius (mars)
the oort cloud (distance)
1,000 times the distance from the Sun to Pluto or roughly one light year
the kuiper belt contains _ small objects (at least)
70,000
what is venus is surface tempature?
700 degreese celcius
how many satilities does jupiter have?
79 satilities
How many planets are in our solar system?
8
mercurys year is how many earth days long?
88 earth days
Venus' surface pressure is _ times that of Earth's
90 times
how long is the distance between the sun and the earth?
93 million miles
venus size is _% of earth
95%
how far does the solar system reach out till? (rethorical question including a non-specific answer)
Actually...we don't really know where our solar system ends, and where interstellar space begins.
define: accretion
An accumulation of dust and gas into larger bodies such as stars, planets and moons
venus is the brightest object in the sky after the ____ and ____
sun and moon
The early proto-sun sent out shock-waves of energy, which were strong enough to blow the lighter elements including....
H, and HE
what is in the outer solar system? (upper case, first letter list)
Jupiter, Saturn, Uranus and Neptune
the inner planets
Mercury, Venus, Earth, Mars
jovian planets
One of four gas giants within our solar system: Jupiter, Saturn, Uranus, and Neptune. The term is in reference to the Roman god Jove, also known as "jupiter"
terrestrial planets
The four innermost planets of the solar system, resembling the earth in general physical and chemical properties.
which meteorites are belied to have origionated on mars ?
SNC
what is in the inner solar system?
Sun, Mercury, Venus, Earth and Mars
what do people think venus might of had in the padt
Venus probably once had large amounts of water like Earth but it all boiled away. Venus is now quite dry
what shape do mercury and pluto make while orbiting?
a circle
what is an inferrior planet
a planet inside of earths orbit
what is mars is moon phobos shaped like?
a potato, 26 km long by about 22 km across.
There are many small moons that probably started out as ____and were only later captured by a ____
asteroids;pluto
One of the best ways to discuss distance within the Solar System is through a special unit called the....
astronomical unit (AU)
venus is atmosphere is mostly composed of ____ ____
carbon dioxide
The ecliptic is inclined only 7 degrees from the plane of the....
sun's equator
what direction do all planets EXCEPT FOR: venus, uranus, and pluto orbit?
counter-clockwise
____the smaller of the two, is only about 15 km long by 12 km across.
deimos (answering the question which asks about dimensions)
what do the cores of gas giants become when getting closer to the center?
denser
what is the Kuiper Belt shaped like
disk-shaped
the planets orbits are.... (mostly)
ellipses
the solar system is mostly ____space
empty
The early proto-sun sent out shock-waves of ____
energy
what is the largest moon in the entire solar system?
ganymede
the sun is formed from a sprinning cloud of: ____ and ____
gas and dust
Jupiter radiates more ____ into space than it receives from the ____
heat;sun
what are the outer planets? (list) (lower case)
jupiter, saturn, uranus, neptune
_____ belt if an area beyond neptune
kuiper
saturn is the ____ dense of all the planets
least dense (saturn)
there is ____ gravity on mars
less gravity on mars
what is the pressure on mars?
less than 1%
a day on venus is ____ than its year
longer
where are jovian planets located?
main asteroid belt
which planets does the astroid belt orbit around?
mars and jupiter
Earth, its surface area is about the same as the land surface area of Earth
mars compared to earth in surface area
which planet in the solar system has the most creators
mercury
which 2 planets do not orbit in a ellipses?
mercury and pluto
does mercury have any moons?
mercury has no known moons
what is the order of the planets?
mercury, venus, earth, and mars, jupiter, saturn, uranus, neptune, and pluto
what i the largest mountain in the entire solar system
mons
venus rotates in what direction of the earth?
opposite
the oort cloud is said to have____ (amount of comets)
over a trillion comets
name mars is two moons
phobos and deimos
traditionally, what is the solar system divided into?
planets
mercurys atmosphere is always being ____
replenished
what are the outer planets accompanited by elaborating a system of ____ and ____
rings;moons
what are the outer planets composed of?
rock or other solid matter.
the surface on mars is litterly ____ away
rusting
terrestrial planets have the ____ structure
same
venus is known as the ____ planet
sister
Jupiter is very gradually ____ ____ due to the tidal drag produced by the Galilean satellites
slowing down
asteroids
small dense objects orbiting the Sun
comets
small icy objects with highly eccentric orbits
mars is ____ than earth
smaller (mars size)
the moon on mars, phobos is so small that gravity isn't large enough to mold the moon into a ____
sphere
what is the oort cloud?
spherical cloud of icy material surrounding the solar system
what is beyond kuipers belt?
the oort cloud
what is mars called?
the red planet (looks red)
thickness of mercurys atmosphere
thin
mars has a ____ atmosphere
thin (mars)
does venus have moons?
venus does not have any known moons
venus is surface is hotter than what planet?
venus is surface is hotter than mercury
