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Astronomy 1143 Ohio State Quiz 2
Quiz 2 Study
115
Astronomy
Undergraduate 1
07/11/2012

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Term
A location that has the largest canyon in the Solar System.
Definition
Mars
Term
MarsGravity= ? EarthGravity
Definition
1/4
Term
For Earth g=
Definition
9.8 ms^2
Term
No Matter what the composition or shape of the object,it fell with the _____ ____?
Definition
Same Acceleration
Term
A falling object feels a ____ ____ of gravity (g)
Definition
Constant Acceleration
Term
The moons acceleration
Definition
g/(60)^2
Term
Governs the weight of objects on Planets and moons
Governs the orbits of probes and satellites(madmade) sent throughout the solar system
Governs the movement of gas molecules around the planet(holds an atmosphere)
Definition
Universal Gravitation
Term
Danish nobleman,brilliant astronomer and instrument builder
The greatest naked-eye astronomer of the pre-telescopic age
Man of passion and regal bearing
Definition
Tycho Brahe (1546-1601)
Term
Inherited Tycho's data
Convinced the universe was governed by physical laws
Staunch Copernican
Definition
Johannes Kepler (1571-1630)
Term
The orbits of the planets are ellipses with the sun at one focus
Definition
Kepler's first law
Term
Is a measure of how large the orbit is (average distance around the sun)
Definition
Semi major axis
Term
The measure of how "oval" the orbit is
Between 0-1
Higher thevalue, more oval the orbit
0 is a circle
Definition
Eccentricity
Term
Equal areas in equal times, the planet must be changing speed during orbit
Definition
Kepler's Second Law
Term
Point in orbit closest to the sun
Fastest planet speed
Definition
Perihelion
Term
Point in orbit farthest away from sun
Planet speed at slowest
Definition
Aphelion
Term
The larger the planet's orbit,the longer it takes to go once around the sun.
P^2=a^3
Definition
Kepler's Third Law
Term
Described as a wave
This is light
Disturbance that carries energy at the speed of light
Definition
Electromagnetic Radiation
Term
Travels through a vacuum at the speed of light
Periodic changes in strengths of electric and magnetic fields
Does not need a medium to "wave" in
Definition
Electromagnetic Waves
Term
c=299,792.458 km/sec
Constant for all light waves
Definition
Speed of light
Term
Size of the wave
Definition
Wavelength
Term
number of waves/second
Definition
Frequency
Term
c
Definition
Wave Speed
Term
c=wavelength*frequency
Definition
Term
Longer wavelength means
Definition
Smaller Frequency
Term
Broad sequence of all light from low to high wavelengths
Definition
Electromagnetic Spectrum
Term
Short wavelength or high frequency
Definition
Ultraviolet, X-Rays, Gamma Rays
Term
Long wavelengths or low frequency
Definition
Radio waves, microwaves, Infrared
Term
Wavelengths: 4000-7000A
Frequencies: 7.5*10^14-4.3*10^14 waves/sec (Hz)
Red-Violet
Definition
Visible Spectrum
Term
Technique to determine the spectral lines of a atom, molecule, or mineral
Useful tool allowing insight into the internal energy structure of atoms
Useful tool to determine the presence (and amount of) of elements, ions, and molecules in objects in the universe
Definition
Spectroscopy
Term
The pattern of light at specific wavelengths emitted by (or absorbed from) a light source
Definition
Spectrum
Term
Disperse light into its component colors
Definition
Prisms
Term
Light from a continuous spectrum through a vessel containing a cooler gas
Light is being absorbed by atoms in gas
Definition
Absorption-Line Spectrum
Term
Each has a unique spectrum
Definition
Element
Term
Why does each element have a characteristic line spectrum
Definition
It reflects the detailed structure of the atom
Depends on the number and arrangement of electrons in orbit around the nucleus
The energy structure of an element determines its chemical properties
Term
From the object's spectrum we can learn which atoms and molecules are present, and in what proportions
Definition
The importance of Spectroscopy
Term
Rocky/Metal planets
Mercury, Venus, Earth, Mars
Definition
Terrestrial Planets
Term
Jupiter and Saturn
Definition
Jovian Planets/Gas Giants
Term
Uranus and Neptune
Definition
Jovian Planets/Ice Giants
Term
Low mass Rocky and Icy Bodies
Pluto, Eris, Ceres, MakeMake, Haumea
Definition
Dwarf Planets
Term
Kuiper Belt Objects and Comets
Definition
Small Solar System Bodies, ICY
Term
Asteroids and meteoroids
Definition
Small solar system bodies, Rocky
Term
0.4-1.5 AU
Definition
Terrestrial in the inner solar system
Term
5-30 AU
Definition
Jovian in the outer solar system
Term
Counterclockwise orbit all in same direction and plane
Near ecliptic plane
Definition
Basic properties of planets
Term
4.6 Billion years
Definition
Age of solar system
Term
Largest of the terrestrial planets
Definition
Earth
Term
Three Terrestrial planets with atmospheres
Definition
Earth, Venus, Mars
Term
Surface of Terrestrial planets
Definition
Solid, mostly silicates and Iron. High density
Term
Largest type of planet in SS
Definition
Jovian planets
Term
Jovian planets
Definition
Jupiter, Saturn, Uranus, Neptune
Term
Thick H/He atmosphere, Liquid hydrogen mantle, small rock core
Definition
Gas Giants, Jupiter and Saturn
Term
Thick methane atmosphere, liquid H/ice mantle, smaller rocky core
Definition
Ice Giants (Uranus and Neptune)
Term
Outer Solar system objects
More elliptical relative to other planets
Not dominant in their orbital neighborhoods
Definition
Dwarf Planets
Term
Any natural satellite orbiting a planet or dwarf planet
Definition
Moon
Term
Giant Moons
Definition
The Moon, Io, Eurpa, Ganymede, Callisto, Titan, Triton
Term
No Moons
Definition
Mercury and Venus
Term
Made of rock and metal
Most are found in main belt
Definition
Asteroids
Term
Vaporizing bits of rock and metal
Sizes from grains of sand to boulders
Enter our atmosphere
Definition
Meteors
Term
Dirty smowballs (rock and ice)
Long tails of gas and dust are swept off its "nucleus" when it passes near the sun
Definition
Comets
Term
Class of icy/rock bodies orbiting beyond Neptune
Definition
Kuiper Belt Objects
Term
Objects that come through and from Kuiper Belt
Definition
Dwarf planets
Term
Period of comets in Kuiper belt
Definition
Less than 200 years
Term
The elements that make up the molecules of Life.
Most common of elements
Found everywhere
Definition
Life elements
Term
How are elements distinguished?
Definition
By the number of protons in the nucleus
Term
Sum of number of protons and number of neutrons
Definition
Atomic Mass Number
Term
All elements are
Definition
Chemically Distinct
Term
Column of periodic table
Definition
Similar chemical properties
Term
Same number of protons, different number of neutrons
Chemically identical to original but different masses
Definition
Isotope
Term
80% Hydrogen, 20% Helium, trace amounts of other elements
Definition
Stars
Term
Each element and molecule has a unique spectrum
Definition
Cosmic Fingerprint
Term
Number of elements in our sun
Definition
60
Term
Hydrogen
Helium
Oxygen
carbon
Neon
Nitrogen
Silicon
Iron
Magnesium
Sulfer
Definition
Top ten most abundant
Term
The particular cloud that gave birth to our solar system
Definition
solar nebula
Term
Energy cannot be created nor destroyed, but only transformed from one form to another
Definition
The law of conservation of energy
Term
The total amount of "circular motion" of an object (or set of objects)must be conserved.
Definition
Conservation of angular momentum
Term
Particles that grew to the size of mountains or larger
Definition
Planetesimals
Term
The general process by which particles stick together and grow larger
Definition
accretion
Term
A stream of charged particles continually blown outward in all directions from the sun
Definition
solar winds
Term
Temperature of this planet reaches 425 C
Definition
Mercury
Term
The atmosphere of this planet contains sulfuric acid and other chemicals that are toxic to us
Definition
Venus
Term
Carbon Dioxide makes up this percentage of our atmosphere
Definition
1%
Term
Believed to have liquid water underground due to internal heat
Definition
Mars
Term
This caused Mars to freeze over 3 billion years ago
Definition
Climate change
Term
Outer cores contain water, methane, and ammonia. Odd "Oceans"
Definition
Uranus and Neptune
Term
A spacecraft goes past a world just once and then continues on its way
Definition
Flyby
Term
A spacecraft that orbits the world it is studying, allowing longer-term observation during repeated orbits
Definition
Orbiter
Term
These spacecraft are designed to land on a planet's surface or probe a planet's atmosphere by flying through it.
Definition
Lander or probe
Term
A mission with a spacecraft that is designed to return to earth carrying a sample of the world it has studied.
Definition
Sample return mission
Term
The process by which molecules escape from a solid
Definition
Sublimation
Term
The process which molecules escape a liquid
Definition
evaporation
Term
energy of motion
Definition
kinetic energy
Term
"Pieces" of light
Definition
Photons
Term
The longest wavelength of light
Definition
Radio waves
Term
bright lines on a dark background
Definition
emission line spectrum
Term
smooth light across a broad spectrum
Definition
continuous spectrum
Term
dark lines on a continuous background
Definition
absorption line spectrum
Term
Any dense object emits continuous light that is a characteristic of the object's surface temperature
Definition
thermal radiation
Term
Discovered simple geometric relationships that allowed him to calculate each planet's orbital period around the sun and its relative distance from the sun in terms of Earth-Sun distance
Definition
Copernicus
Term
Force pushing galaxies apart
Definition
Dark energy
Term
Largely made of Hydrogen, helium and hydrogen compounds
Definition
Jovian planets
Term
400 nm to 700 nm
Definition
Visible Light
Term
The source of Earth's original atmosphere
Definition
Volcanism
Term
The movement and recycling of rock between the surface and the interior
Definition
plate tectonics
Term
Protects Earth from solar winds energetic particles
Definition
the atmosphere
Term
5 places known to have volcanic activity
Definition
Earth, Mars, Venus, Io, Enceladus
Term
4 places known to have Canyon/valley Formation
Definition
Earth, Mars, Venus, Titan
Term
3 places known to have coastline formations
Definition
Earth, Mars, Titan
Term
6 places known to have atmosphere cloud formation
Definition
Earth, Venus, Mars, Jupiter, Saturn, Titan
Term
5 Places known to have storm activity
Definition
Earth, Jupiter, Saturn, Mars, Neptune
Term
Years it takes Halley's comet
Definition
75 years
Term
Molecules formed on ___ ___ ___ ___ and moons
Definition
all solar system planets
Term
made from molten rock that cools and solidifies
Definition
Igneous rock
Term
rock that has been structurally or chemically transformed by high pressure or heat that was not quite hot enough to melt it
Definition
Metamorphic
Term
rock that is made by the gradual compression of sediments such as sand and silt at the bottom of seas and swamps
Definition
Sedimentary
Term
The effect that makes a planet's surface warmer than it would in the absence of an atmosphere
Definition
Greenhouse effect
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