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Astronomy science note
N/A
32
Science
8th Grade
03/10/2011

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Term
constellation
Definition
A pattern of stars
Term
Visible light
Definition
electro magnetic radiation that can produce a visual sensation
Term
electromagnetic radiation
Definition
consisting of waves of energy
Term
wavelength
Definition
the distance, measured in the direction of propagation
Term
spectrum
Definition
rainbow♥
Term
refracting telescope
Definition
optical telescope that has a large convex lens
Term
reflecting telescope
Definition
optical telescope which uses a single or combination of curved mirrors that reflect from light
Term
radio telescope
Definition
astronomical telescope that picks up electromagnetic radiations in the radio frequency
Term
observatory
Definition
a location used for observing terrestrial and/ or celestial events
Term
spectrograph
Definition
a spectroscope equipped to photograph or otherwise record spectra
Term
galaxy
Definition
massive, gravitational bound system. (Consists of stars, gas, and dust)
Term
universe
Definition
everything that exists everywhere
Term
light year
Definition
the distance light travels in a year
Term
giant star
Definition
very bright star of large diameter and low density
Term
apparent magnitude
Definition
a numerical measure of brightness of a star
Term
absolute magnitude
Definition
the magnitude that a star would have if it were viewed from a distance of 10 parasecs
Term
Hertzsprung- Russell Diagram
Definition
A plot of absolute magnitude of stars v.s their color
Term
main sequence star
Definition
a star that derives its energy from the conservation of hydrogen into helium in it's core
Term
pulsar
Definition
a degenerate neutron star
Term
nebula
Definition
a cloud in outer space consisting of dust and gas
Term
protostar
Definition
collection of gas and dust in space with high temperature
Term
white dwarf
Definition
a faint star of enormous density
Term
supernova
Definition
star that explodes and becomes extremely luminous
Term
neutron star
Definition
a star that has collapsed unser it's own gravity
Term
black hole
Definition
region of space resulting from the collapse of a star
Term
quasar
Definition
a star like object that may send out radio waves
Term
binary star
Definition
system of 2 stars that revolve around each other under their mutual gravitation
Term
eclipsing binary
Definition
a class of extrinsic variable stars (changes brightness)
Term
elliptical galaxy
Definition
spherical/ oval shape
Term
irregular galaxy
Definition
a galaxy that doesn't have a regular shape
Term
big bang theory
Definition
cosmological model of the initial conditions and subsquent development of the universe
Term
intelligent design theory
Definition
certain features of the universe of living things are best explained by intellegent cause
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