Stars and Constellation Flashcards

1
Q

● Huge collections of billions of stars
● Contain dark strips of dust and may
contain huge black holes at their
centers

A

galaxies

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2
Q
A
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3
Q

types of galaxies

A

spiral galaxy
elliptical galaxy
irregular galaxy

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4
Q

consist of a
central mass with one, two, or
three arms that spiral around
the center.

A

spiral galaxy

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5
Q

flattened pinwheels in shape

A

spiral galaxy

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6
Q

is oval, with a
bright center that gradually,
evenly dims to the edges. They
are usually the brightest
galaxies.

A

elliptical galaxy

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7
Q

are not
asymmetrical and do not look
like spiral or elliptical galaxies.

A

irregular galaxy

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8
Q

is a group of
stars that looks like a particular
shape in the sky and has been
given a name.

A

constellation

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9
Q

are balls of gas that shine
or used to shine because of
nuclear fusion in their cores.

A

stars

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10
Q

(clouds of dust and mostly hydrogen
gas)

A

nebulae

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11
Q

A cloud of interstellar gas and dust
that gradually collapses, forming a
hot dense core, and evolves into a
star once nuclear fusion can occur in
the core.

A

protostar

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12
Q

colors of stars (hottest to coldest)

A

BLUE (HOTTEST)
BLUE-WHITE
YELLOW
ORANGE
RED (COLDEST)

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13
Q

KIND OF STARS

A

-main sequence
-Giant and Supergiant Stars
-White dwarf stars
-novas
-supernovas
-neutron and pulsars
-black holes

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14
Q

are objects that are so
massive and dense that their
immense gravitational pull does
not even let light escape.

A

black holes

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15
Q

are a special type of
neutron star.

A

pulsars

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16
Q

are the collapsed
cores sometimes left behind by
supernovas explosions.

A

neutron stars

17
Q

star that suddenly
increases greatly in brightness
because of a catastrophic
explosion that ejects most of its
mass.

A

supernovas

18
Q

binary, or double, star in
which one member is a white dwarf
and the other is a giant or
supergiant.

A

novas

19
Q

these stars are
smaller and dimmer

A

white dwarf stars

20
Q

dead star

A

black dwarf

21
Q

Stars swell as they move off the
main sequence, becoming giants
and for more massive stars–
supergiants.

A

giant and supergiant stars

22
Q

is any star that
has a hot, dense core
which fuses
hydrogen into helium
to produce energy.

A

main-sequence

23
Q

heliocentric

A

sun

24
Q

geocentric

A

earth

25
Q

not to far from sun

A

habitable zome

26
Q

a small remaining quantity of something.

A

remnants