Science Quiz / ESSH Michelle Hoelzer Ch 24

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Can you name the ESSH Michelle Hoelzer Ch 24?

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A collapsing cloud of gas and dust destined to become a star
Undetected matter that is thought to exist in great quantities in the universe (2 lockers)
A galaxy having straight arms extending from its nucleus (3 words)
A cloud of interstellar gas and/or dust
Changes in the spectra of galaxies that indicate they are moving away from the Milky Way as the result of the expansion of space (3 words)
A star of extremely high density composed entirely of neutrons (2 words)
The nuclear reaction in which hydrogen nuclei are fused into helium (2 words)
A variable radio source of small size that emits radio pulses in very irregular periods
A sequence of stars on the Hertzsprung-Russell diagram, containing the majority of stars, which runs diagonally from the upper left to the lower right (2 words)
Extremely dense solar material caused by electrons being displaced inward towards an atom’s nucleus (2 words)
The distance light travels in a year; about 6 trillion miles (2 words)
A massive star that has collapsed to such a small volume that its gravity prevents the escape of all radiation (2 words)
The cluster of 20 or so galaxies to which our galaxy belongs (2 words)
The theory that proposes that the universe originated as a single mass, which subsequently exploded (3 words)
A flattened, rotating galaxy with pinwheel-like arms of interstellar material and young stars winding out from its own nucleus (2 words)
A large, cool star of high luminosity; a star occupying the upper-right portion of the H-R diagram (2 words)
The study of the universe, including its properties, structure, and evolution
HintAnswer
A very large star of high luminosity
A galaxy that lacks symmetry (2 words)
An exploding star that increases in brightness many thousands of times
A cloud of interstellar dust that obscures the light of more distant stars and appears as an opaque curtain (2 words)
A gaseous nebula that derives its visible light from the fluorescence of ultraviolet light from a star in or near the nebula (2 words)
A cloud of glowing gas excited by ultraviolet radiation from hot stars (2 words)
Dust and gas found between stars (2 words)
Red giants that overshoot equilibrium then alternately expand and contract (2 words)
A plot of stars according to their absolute magnitudes and spectral types (2 words)
A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; believed to be near its final stage of evolution (2 words)
A relatively dense dust cloud in interstellar space that is illuminated by starlight (2 words)
Groups of gravitationally bound galaxies that sometimes contain thousands of galaxies (2 words)
A galaxy that is round or elliptical in outline; it contains little gas and dust, no disks or spiral arms, and few hot, bright stars (2 words)
The apparent brightness of a star if it were viewed from a distance of 10 parsecs; used to compare the true brightness of stars (2 words)
A very small galaxy, usually elliptical and lacking spiral arms (2 words)
A shell of incandescent gas expanding from a star (2 words)
Relates the distance to a galaxy and its velocity (2 words)

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Created Dec 1, 2012ReportNominate
Tags:earth, space

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