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Braidan- 1-4 7G
N/A
16
Astronomy
7th Grade
02/22/2013

Additional Astronomy Flashcards

 


 

Cards

Term
constellations
Definition
patterns and stars in the night sky.
Term
absolute magnitude
Definition
the amount of light a star give off.
Term
apparent magnitude
Definition
the amount of light from a star recieved on Earth.
Term
light-year
Definition
the distance light travels in one year.
Term
photosphere
Definition
the lowest layer of the Sun's atmosphere and the layer from which light is given off.
Term
chromosphere
Definition
the layer of he Sun that extends upward about 2000 kilometers above the photosphere.
Term
corona
Definition
largestlayer of the Sun's atmosphere.
Term
Sun spot
Definition
areas of the Sun surface that appear dark because they are cooler than surrounding areas.
Term
nebula
Definition
a large cloud of gas and dust.
Term
giant
Definition
a star in the late stage of its life cycle.
Term
white dwarf
Definition
a star in evolution
Term
super-giant
Definition
heavier and heavier elements form by defusion and the star expands.
Term
neutron star
Definition
only neutrons can exist in the dense core.
Term
black hole
Definition
light cant escape.
Term
galaxy
Definition
large group of stars gases and dust held together by gravity.
Term
big bang theory
Definition
theory about the formation of the universe.
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