test #2

Astronomy 101 with Brandt at University of New Mexico

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By: Kristin Gutierrez
Created: 2011-10-10
Size: 23 flashcards
Views: 18

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what does the Solar system contain? what is its shape?

Sun
planets
their moons
rings
asteroids
comets

flat

what is the shape of the orbits of the planets?

the shapes are all elliptical except Mercury is almost circular

Where is the astroiod belt located? what is it said to be made of?

It lies between Jupiter and Mars

Said to be failed planet formations

Terrestrial planets and their characteristics

Mercury
Venus
Earth
Mars

Closest to the sun
smaller
rocky/metalic composition
highter average densities
spin slower
few moons
no rings

Jovian planets

Jupiter
Saturn
Uranus
Neptune

Farther from the sun
larger
smooth surfaces
lower densities
spin faster
many moons and rings

gaseous/ liquid envelopes are composed primarily of hydrogen and helium

What is the best Theory of how the solar system formed?

initial gas and dust nebula

dust grains grow by accreting gas, colliding and sticking

continued growth of clumps of matter, producing planetesimals

planetesimals collide and stick, enhanced by their gravity result is a few large planets

Rift

when the plate tectonics drift apart letting magnum come between and out of the trench

Subduction

when the rift is pushing the tectonic plate away to let the magnum out the other plate is going underneath another

Slip

is when the tectonic plates are rubbing together and placing pressure on each other eventually making them slide against each other.

What is the moons average density and what is the atmosphere of the Moon like?

the moons average density is smaller than the earth because the moon is smaller and its core is colder. The moon has n atmosphere because of the lack of suficent gravity and there is no wind of erosion.

Maria

they are dark and more featureless
this is the evidence of lunar volcanism
they are flat

highlands

Heavily cratered due to impacts

what is the evidence of volcanism?

maria
Rilles
Linear chain creaters

Rilles

are ditches carved out by flowing lava

Linear chains of craters

mark as pools of lava the the crust where lava emerged to form domes which then later collapsed from the lava being sucked back into the core

How did the Moon Form?

the moon formed from the same material as the earth as the same time and is said to be a stray object that Earths gravity captured when other planetesimals where still around. a mars sized object hit earth and out slung the smaller less dense moon we have today

Mercury

the smallest planet
One probe was ever sent there to do a fly-by
much like the moon and because it is so small it cooled off fast

Intercrater plains

may be ancient lava fields

Tidal force on Mercury

the sun has a tidal force on mercury making it have the same side towards the sun at all times and when nearest the sun has a very elliptical shape.

About this deck

By: Kristin Gutierrez
Created: 2011-10-10
Size: 23 flashcards
Views: 18

About StudyBlue

“I have used this website for three exams, and I see a huge difference in my test results.”
Naj