Term
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Definition
| the nightly east to west motion of the sky caused by the roation of earth |
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Term
| Polaris' angular distance above the northern horizen corresponds to....? |
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Definition
| corresponds to the individual's latitude |
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Term
| the sun move's how many degree's through the sky in 1 day? |
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Definition
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Term
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Definition
| the amount of time the sun takes to move from noon to noon the next day (about 24 hours) |
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Term
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Definition
The amount of time one star takes to go from one spot back to that same spot
(about 23 hours, 56min, 4.09s) |
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Term
| why is there a 4 min difference between a solar and sidereal day? |
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Definition
| The earth moves 1 degree in its orbit in one day, therefore the earth needs to rotate one extra degree for the sun to appear in the same spot, but not the stars! |
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Term
| how much is the moons orbit tilted to the ecliptic? |
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Definition
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Term
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Definition
the amount of time it takes the moon to return to the same background stars
(about 27.3 days) |
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Term
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Definition
the amount of time it takes the moon to return to the same phase
(about 29.5 days) |
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Term
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Definition
the amount of time it takes the sun to return to the same background of stars
(about 365.256 days) |
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Term
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Definition
the amount of time it takes the sun to from the vernal eqinox back to the vernal equinox
(365.25964) |
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Term
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Definition
the amount of time it takes the earth to go from perohelion back to perihelion
(365.25964) |
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Term
period is measured in ?
semi major axis is measured in ?
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Definition
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Term
| List the EM spectrum from Highest frequency to lowest |
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Definition
Gamma
X-Ray
Ultaviolent
Visable
Infared
Mircrowave
Radio |
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Term
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Definition
| The bending of light around obstacles |
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Term
With the doppler Equation, negative velocity indicates....?
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Definition
| Indiates thats the object is moving towards the observer |
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Term
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Definition
| depends on the direction of emission |
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Term
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Definition
| The total amount of energy radiated over the entire surface |
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Term
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Definition
| The measure of the stars lumonosity at some distance away |
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Term
| An atom only gives of radiation when... |
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Definition
| An electron is transitioning between energy states |
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Term
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Definition
| When an electron absorbs a photon with sufficient energy, the electron can escape. |
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Term
| What is the Opposite of ionization? |
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Definition
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Term
| Pauli Exclusion Principle |
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Definition
| No 2 electrons can inhabit the same area of the atom if they have the same quamtum charateristics |
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Term
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Definition
| Contain the entire rainbow uninteruppted |
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Term
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Definition
| Contains brightly colored lines superimposed onto a black background |
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Term
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Definition
| Contains a rainbow background with dark lines superimposed on top. |
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Term
A hot opaque gas, liquid, or solid produces a
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Definition
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Term
A hot transparent gas produces an
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Definition
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Term
Light from a hot opaque gas, liquid, or solid passing through a cooler, transparent gas will produce an |
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Definition
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Term
| Ionization equilibrium is found by what equation? |
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Definition
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Term
| Heisenberg Uncertaintly Principle |
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Definition
I fyou trying to reduce the uncertainty in one parameter, you increase the uncertainty in another.
Example: Location and Velocity in and electron |
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Term
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Definition
The outer limit of the soloar system
defined: where the solar wind is balanced by the pressure of the interstellar medium |
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Term
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Poynting-Robertson effect
,
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Definition
a process by which solar radiation causes a dust grain in the solar system to slowly spiral inward.
OR/ALSO
a loss of orbital angular momentum due to the emission of absorbed radiation by the particle.
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Term
| Tidal forces do not follow the inverse square law, instead, they obey....? |
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Definition
the inverse cube law
(1/r^3) |
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Term
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Definition
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Term
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Definition
when surgace activity associated w/ locally magnetized regions of phase increase's.
features: sunspots, flares, prominences, and CME's |
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Term
| Sunspots are caused from... |
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Definition
| Formed when flux ropes of magnetized clumps of plasma intersect the photosphere |
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Term
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Definition
| Explosions in the sun atmosphere which release in a tremedous amount of energy |
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Term
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Definition
| Huge Ballon shaped eruptions of plasma Travelling along magnectic field lines |
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Term
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Definition
The color index is no dust is present and is given by
(B-V)o |
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Term
| The color index tells you what about a star? |
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Definition
| The amount of intersteller reddening a that star has undergone |
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Term
| Once the size of the orbit and the orbital period of a binary system is determined, you can use what to solve for their masses? |
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Definition
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Term
| How can you tell if you are looking at a spectroscopic Binary? |
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Definition
the appearance of two sets of spectral lines or by the shift between a blueshift and a redshift of the visible component’s spectral lines as the unseen star orbits.
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Term
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Definition
Where the intersteller exctinction is so intense, that no light passes through.
think Horsehead nebula |
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Term
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Definition
a star is embedded within the dust cloud, the dust particles can scatter the starlight and the cloud can appear bright bluish-white in color.
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Term
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Definition
Clouds of cold atomic hydrogen gas with the electron in the ground state
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Term
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Definition
If a hot star is embedded in a gas cloud, ultraviolet radiation from the star can ionize the gas and cause it to glow.
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Term
| Emission Nebula's can also be called....? |
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Definition
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Term
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Definition
| The sphere of ionized H in an emission Nebula |
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Term
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Definition
| Where the temperatures are cold enough, atoms join together to form molcules |
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