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42 Cards in this Set
- Front
- Back
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3 statements that support solar system evolution
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1.Revolution, 2.Rotation, and 3.Orbital plane, and "exceptions"
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what causes strong magnetic fields? (2 answers)
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1. Core Density, 2. Speed or (rotation)
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What is the PRESENT Atmosphere of the earth, and why caused it? (2 answers)
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1. Oxygen 2. Nitrogen, life
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1.Craters 2. Maria 3. Rilles 4. Rays 5. Highlands
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1. Impact areas 2. Lava Flows 3. Cracks 4. Ejecta from impacts 5. Highlands
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Moon: sunrise to sunrise =
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28 days
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Moon: Sunrise to sunset =
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14 days
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Mercury: Spin-Orbit Coupling
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1 1/2 rotations every orbit
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What causes 900F temperature on Venus? (4 answers)
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1. Runaway greenhouse effect 2. Carbon Dioxide. 3. Close to sun 4. No water.
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Mars: 1. Olympus Mons 2. Valles Marineris
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1. Largest volcano in solar system (90,000 ft.) 2. Valley, ( 3,000 mi. long)
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What are the effects of the 10 hour rotation rate on Jupiter? (4 answers)
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1. Flattening Poles 2. Bulging Equator 3. Cloud Bands 4. Strong mag. Field
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Moons of Jupiter: (4 answers)
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1.Io 2. Europa 3. Ganymede 4. Callisto
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What causes IO's active surface?
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Tidal squeezing between Europa and Jupiter
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Where is water on Mars?
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1.Polar caps, 2.atmosphere, 3. permafrost, and 4. frost in the morning
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What is the Roche limit?
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If a moon gets too close it falls apart (its located just outside the rings)
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force #1 that shapes Saturn's rings:
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Orbital resonance: gaps
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Force #2 that shapes Saturn's rings:
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Gravitational interaction with Shepherding moons: Braided Ring
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Force #3 that shapes Saturn's rings:
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Magnetic Field: Spokes
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Force #4 that shapes Saturn's rings:
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Spiral Density waves: Dense and Rarefied areas in the rings.
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Uranus degree axis tilt:
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Seasons are 21 year long (84 year period)
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Who was the Discoverer of Uranus and when was it founded?
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Herschel 1781
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How was Uranus discovered?
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Careful observations with a telescope
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who discovered Neptune? what what year?
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Adams and Leveirrer, 1846
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How was Neptune discovered?
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Calculations of the orbit
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Who discovered
Pluto? and what year? |
Tombaugh, 1930
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How was Pluto discovered?
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Blink comparator, photo comparisons
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Asteroids: Bode's "law" (coincidence) 2.8AU
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Most asteroids are 2.8AU from the sun
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Kirkwood Gaps in the asteroid belt...
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Where there's no asteroids, caused by gravitational pull of Jupiter
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where do the comets come from?
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OORT clouds (approx 150,000AU from sun)
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where is the OORT cloud?
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Half-way to the next star!
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What controls the comet tail?
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Solar wind and light pressure
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What causes meteor showers?
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broken up Comets
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When is the best time to watch a meteor shower, and why?
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After Midnight, because we are on the leading edge of the earth
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what is a BOLIDE
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a bright Meteor, (or fireball)
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What is the zodiacal light?
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reflection of sunlight from planetary dust
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Corona
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Sun's outer atmosphere 1-2mil. K
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Photosphere
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surface we see 6,000 k
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Chromosphere
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layer above photosphere 6-10,000 k
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Prominences
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loops and strands of hot gases, originating in the corona.
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sunspots
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associated w/ magnetic fields
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Fusion , proton-proton chain
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Fusion - fuses atoms together
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Fission
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splitting atoms
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Fusion reaction =
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H+H+H+H+He+energy
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