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Bomani Astronomy Vocab
Astronomy Vocab Words
21
Astronomy
7th Grade
02/22/2013

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Term
Constellation
Definition
pattern of stars in the sky
Term
absolute magnitude
Definition
measurement of light a star receives
Term
apparent magnitude
Definition
measurement of light Earth receives
Term
light-year
Definition
distance light takes to travel in one year
Term
photosphere
Definition
surface of the sun
Term
chromosphere
Definition
layer that extends 2000 km above the photoshphere
Term
corona
Definition
largest layer of the sun
Term
sunspots
Definition
area's that appear darker than others because it's cooler than surrounding area's
Term
nebula
Definition
large cloud of clegas and dust
Term
giant
Definition
late stage in star's life cycle
Term
white dwarf
Definition
stage where star is aboutblack hole same size of Earth
Term
supergiant
Definition
heavy elemnt form by fusion and expands into supergiant
Term
neutron star
Definition
when star's diamater shrinks, and core becomes dense
Term
black hole
Definition
a reigon where light can't escape
Term
galaxy
Definition
large group of stars, gas, and dust
Term
big bang theory
Definition
leading theory about the formation of the universe
Term
North Star
Definition
The end of the little dipper, Polaris is its name
Term
Proxima Centauri
Definition
The nearest the sun
Term
Core
Definition
the center of a star, produces heat and energy from fusion of hydrogen.
Term
solar eclipse
Definition
when the sun covers the moon
Term
lunar eclipse
Definition
when the moon covers the sun
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