Astronomy test #3
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thermal radiation being trapped into the atmosphere
moons that orbit arount the edge of planetary rings, stabelizing it
very hot springs located in the deep ocean that presented us with the idea of life living without sunlight.
keeps moons young and hot by the constant squeezing and releasing from planets.
they appear to move across the sky slowly, they have a structure that consists of a nucleus and a tail
nucleus of a comet
1-50miles in diameter it is the solid central part of the comet termed "the dirty snowball"
halo of gas and dust sorrounding the nucleus can be extremely long.
straight gas tail from disintigrating objects
curved and points away from the sun
poriod > 200 years these come from the oort cloud and there are 12 new ones founded each year
short period comets
perios < 200 years, 100 known, come fromt eh kaiper belt, usually long period comets "captured into shorter orbits, eventually burn out or crash, disintegrate
cloud of comets that is one of the furthest from our sun, the other clouds are less than a thousandth of the distance from this cloud to the sun
a region of the solar system extended past the planets where it is similar to the astroid belt however it is far larger in size, home to more frozen volatiles, such as pluto. A swarm of icy planetesimals
100,000 visible, irregular shaped, many are binary, very far from another, small rocky, metalic objects of the solar system.
piece of interplanetary debris
streak of light made by a meteoroid entering our atmosphere
meteoroid that survives earth's surface
1 out of three types of meteorites and it is 95%of all metors
1 out of three types of metorites and it comprises of 4% of all meteors
1 out of three types of meteorites and it comprises of 1% of all meteors found
occur when earth passes through the trail of debris in a comets orbit.
the constellation from which metors seem to radiate
splitting of a large atomic nucleus
combining, joining of small atomic nucleui
similar to electrons however they are neutrally charged and they pass through all solid objects, a typical product of nuclear fusion
the study of sun quakes
where the fusion occurs
in between the core and convection zone
circulation rapidly bringing heat to the sun's surface
3 parts of the sun
- 1) core
- 2) radiation zone
- 3) convection zone
when not all part of the planet moves at the same speed as others when rotating
visible surface of the sun, contains sunspots
irregular layers of gas above photosphere
extends out past all the polanets as the solar wind
3 layers of the suns atmosphere
stream of charged particals ejected from the upper atmosphere of the sun
cooler, darker areas caused by "tangles" in the suns mag feild, the number of them peak ever 11 years
Why is the impact theory favored for the birth of the moon?
moon rocks are similar to earth rocks and not much of it has iron, it is less denser and missing and atmosphere with everything that could have been easily vaporized.
dark lava filled impact basins
Mercury has what surface features
heavily cratered, caloris basin, extreme temperatures, very high in the day, very low at night.
cloud covered, extremely bright, sulfuric acid clouds, however atmosphere is carbon dioxide, temp is always 900 degrees. It has similar density composition and distance and size as earth
olympus mons, biggest volcano, valles marineris biggest canyon, mars is very cold and dry
moons of mars
- both were thought to be captured asteroids
jovian planets are composed of
hydrogen and helium
Moons of jupiter
- Io: most volcanically active
- Europa: very young ice surface over a water ocean
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