Gen Sci Ch 39 Question Preview (ID: 44047)
Universe.
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Why do the stars move across the sky at night?
a) the stars are flying across the universe
b) the stars are really airplanes
c) the stars orbit the sun like we do
d) the stars don't move, Earth does.
An event wherein a white dwarf suddenly brightens and appears as a *new* star
a) black hole
b) constellation
c) red giant
d) nova
A galaxy with a distorted, nonsymmetrical shape as occurs when two galaxies are close to each other or in the process of colliding.
a) elliptical galaxy
b) irregular galaxy
c) sombrero galaxy
d) spiral galaxy
The Big Bang Theory marked the beginning of...
a) time
b) space
c) time and space
d) nothing
An imaginary sphere surrounding Earth to which the stars are attached
a) celestial sphere
b) irregular galaxy
c) protostar
d) black hole
Who was responsible for the Big Bang Theory?
a) Albert Einstein
b) Frank Drake
c) Edwin Hubble
d) Copernicus
What kind of stars turn into black holes?
a) low mass stars
b) average mass stars
c) high mass stars
d) comets
What is a planetary nebula?
a) where planets are formed
b) a shell around a dying star
c) where stars are born
d) a storm on a planet's surface
What a star is made of depends on
a) the size of the star
b) the mass of the star
c) the age of the universe
d) the color of a star
What determines the life cycle of a star?
a) the mass of a star
b) the age of the universe
c) the color of a star
d) the amount of exercise a star gets
In a star, ___ nuclei fuse to ___ nuclei
a) hydrogen, oxygen
b) helium, carbon
c) hydrogen, helium
d) oxygen, carbon
Stars begin their life cycles in
a) a nebula
b) a protostar
c) a supernova
d) a black hole
What were constellations used for?
a) creating myths and legends
b) navigation aids
c) calendars for planting crops
d) all of the above
What *wanders* across the night sky?
a) planets
b) comets
c) asteroids
d) stars
SETI...
a) is searching for extra-terrestrial life
b) is using radio telescopes to *listen* for communication from other planets
c) has not been successful to date.
d) all of the above
The remains of a giant star that has collapsed on itself, so dense, and with a gravitational field so intense, that light itself cannot escape from it
a) black hole
b) red giant
c) supernova
d) white dwarf
A group of stars that forms an identified pattern
a) galaxy
b) constellation
c) light-year
d) celestial sphere
A large assemblage of stars, interstellar gas, and dust held together by gravity
a) constellation
b) stars
c) nebula
d) galaxy
The Milky Way is a...
a) irregular galaxy
b) elliptical galaxy
c) spiral galaxy
d) spherical galaxy
What is the process by which a star *ignites*?
a) thermonuclear fission
b) thermonuclear fusion
c) thermonuclear magnetism
d) thermonuclear ignition
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