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Intro Astronomy Final
Final Review
50
Astronomy
Undergraduate 1
05/02/2012

Additional Astronomy Flashcards

 


 

Cards

Term
Aristotle
Definition
associated with ancient greek world view
Term
Aristarchus
Definition
rejected the geocentric world view
Term
Eratosthenes
Definition
accurately determined the size of the Earth
Term
Ptolemy
Definition
Almagest
Term
Copernicus
Definition
Heliocentric world view
Term
Tycho Brahe
Definition
Last astronomer without a telescope. Provided Kepler with the data needed in order to develop his three Laws
Term
J. Kepler
Definition
Three Laws of Planetary Motion
Term
First Law of Planetary Motion
Definition
Law of Elipses: changes shape of orbit, sun not center, focus of ellipse
Term
Second Law of Planetary Motion
Definition
Law of Equal Areas: how planet moves along track, area of pie piece always the same, speed faster when closest to the sun, conservation of angular momentum
Term
Third Law of Planetary Motion
Definition
Law of Harmonies: length of time to complete orbit longer = bigger orbit
p2=a3
Term
Galileo
Definition
Used a telescope and challenged the conventional wisdom of the motion of objects and the nature of the heavens
Telescope observations:
a) Phases of Venus
b) Moons of Jupiter
c) Sunspots
d) Mountains on the Moon
Term
Newton's Second Law of Motion
Definition
F=ma
Term
Newton's First Law of Motion
Definition
Law of Inertia
Term
Newton's Third Law of Motion
Definition
Law of Reciprocal Actions
Term
Long Wavelength to short
Definition
Radio
Infrared
Visible
Ultraviolet
X-ray
Gamma
Term
Velocity of light
Definition
fequency x wavelength
Term
Wien's Law
Definition
Shorter wavelength = hotter
Term
Stefan's Law
Definition
Brighter = hotter
Term
Continuous Spectrum
Definition
hot object under high pressure
Term
Emission Line Spectrum
Definition
hot gas under low pressure
Term
Absorbtion Line Spectrum
Definition
source of continuous spectrum viewed behind cool gas under pressure
Term
Kirchoff's Laws
Definition
Continuous
Emission Line
Absorbtion
Term
Earth core temperature
Definition
6000K iron rich, highest density
Term
Moon Unusual Motion
Definition
Synchronous rotation
Term
Moon Geologic Activity
Definition
Impact Cratering
Thicker crust on far side
Term
Main Feature of Moon
Definition
Maria
Highlands
Term
Mercury Unusual Motion
Definition
Resonance Rotation
Term
Mercury Surface Features
Definition
Caloris Basin - large impact crater
Jumbled terrain
Intercrater plains - smoothed surface regions possibly from lava flow
Scarps - Huge cliffs thought to have form as the planet cooled
No atmosphere
Term
Venus Unusual Motion
Definition
retrograde rotation
Term
Venus Specific Features
Definition
1. Maxwell Montes - largest mountain on Venus
2. Aphrodite Terra - largest highlands
3. Isthar Terra, Alpha Regio, Beta Regio - other highland regions
4. Beta regio has two Shield volcanoes
Term
Venus Weather
Definition
Constant cloud cover -Sulfuric acid clouds at 50 km
Temperature, VERY HOT 730K,
Pressure: about 90 times Earth's
Chemical Comp. - CO2 - 95.3% Nitrogen - 3.5%
Term
Mars Unusual Motion
Definition
24.6 hour rotation
24 degree tilt = seasons
Term
Mars Specific Features
Definition
1. Olympus Mons - Shield volcano - largest mountain in the solar system
2. Valles Mariners - Enormous Valley that runs along the equator of Mars
3. Polar Icecaps - Frozen water and carbon dioxide
4. Evidence of water flow in the past.
5. Red dust on the surface is Iron Oxide (rust)
Term
Mars Moons
Definition
Phobos and Deimos, small irregular shapes, not like our moon, more like captured asteroids
Term
Jupiter Unusual Motion
Definition
Fast differential rotation
Term
Jupiter Interior
Definition
rocky core, metallic hydrogen (currents here produce the magnetic field)
Term
Jupiter Weather
Definition
typical colors are bright yellow, orange and red

the great red spot - a 'hurricane' on Jupiter that is stable and always present
Term
Saturn Unique Feature
Definition
Internal hearing by helium precipitation
Term
Saturn Ring System
Definition
Cassini Division
Roche Limit
Shepherd Satallites
Term
Uranus
Definition
Blue-Green due to methane
tilt rotation axis 90 degrees
Term
Neptune
Definition
Blue-Green due to methane
Great dark spot
Term
Pluto
Definition
Dwarf Planet
Similar to Ice Moons
Term
Pluto Unusual Motion
Definition
Elliptical orbit - sometimes closer to the sun than neptune
Term
Jupiter
Definition
10X Diameter of Earth
1000X Volume
Largest Gas Giant
Term
Saturn Density
Definition
Least Dense
Term
Mars Density
Definition
Less than 4500kg/m3
Term
Low Mass Star
Definition
Less than 10 Solar Masses
Term
Death of Sun-like Stars
Definition
Planetary Nebula -> White Dwarf
Term
High Mass Star
Definition
More than 10 Solar Masses
Term
Death of High Mass Star
Definition
II Supernova -> Neutron star or black hole
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