Download Chapter 24 Test:Stars/Galaxies

Chapter 24 Test:Stars/Galaxies
MULTIPLE CHOICE: Write the CAPITAL LETTER (or lose 1/2pt./item!)
that goes with the best answer for each blank on the seperate
answer sheet provided.
1.
The positions of the constellations appear to change throughout
the year because _____. (a) the sun revolves around the galaxy,
(b) Earth revolves around the sun, (c) the constellations revolve
around Earth, (d) Earth revolves around the stars.
2.
Its _____ makes Sirius the brightest star in the night sky as
viewed from Earth. (a) color, (b) parallax, (c) absolute
magnitude, (d) apparent magnitude.
3.
The distances to nearby stars can be measured by using _____. (a)
color, (b) parallax, (c) temperature, (d) apparent magnitude
alone.
4.
About 90 percent of the stars in space are _____ stars. (a) white
dwarf, (b) nebula, (c) giant, (d) main sequence.
5.
The hottest stars in space are _____ in color. (a) green, (b) red,
(c) yellow, (d) blue.
6.
A main sequence star becomes a _____ after it uses up the hydrogen
in its core. (a) black hole, (b) nebula, (c) supernova, (d) red
giant.
7.
The intense magnetic fields of sunspots cause arches of coronal
plasma precipitation called _____. (a) prominences, (b)
photospheres, (c) solar flares, (d) corona.
8.
The big bang theory of the formation and expansion of the universe
is supported by the observed uniform and scaled _____. (a) shorter
light wavelengths, (b) Doppler shift to blue-violet, (c) "big
crunch", (d) Doppler shift to red.
9.
Although it has a greater _____ than Sirius, Rigel does NOT look
as bright in the night sky. (a) black hole, (b) parallax, (c)
apparent magnitude, (d) absolute magnitude.
10.
A _____ is an object so dense that nothing, including light, can
escape its gravity field. (a) supergiant, (b) neutron star, (c)
supernova, (d) black hole.
11.
The Clouds
Milky Way,
10 billion
irregular,
12.
A sequence of star colors from hottest to coolest is _____. (a)
blue, yellow, orange, red, (b) yellow, blue, orange, red, (c)
blue, red, yellow, orange, (d) red, orange, yellow, blue.
of Magellan are two _____ galaxy fragments orbiting the
the remnants of a larger galaxy we collided with over
years ago. (a) elliptical, (b) normal spiral, (c)
(d) barred spiral.
Page 2A
13.
_____ is the apparent shift in the position of an object when
viewed from two locations. (a) Apparent magnitude, (b) The Doppler
shift, (c) Absolute magnitude, (d) Parallax.
14.
Our sun is unusual because, unlike most stars in the universe that
belong to multiple star systems, it is _____. (a) red, (b) a
binary, (c) yellow, (d) alone.
15.
The spiral shape of the Milky Way Galaxy CANNOT be seen from Earth
because _____. (a) our view is blocked by the sun, (b) we are
located above the galaxy, (c) we are located within one of its
spiral arms, (d) none of the above.
16.
The _____ states that ~15 billion years ago, the universe began
expanding out of an hypothesized extra-universe black hole. (a)
big bang theory, (b) binary star theory, (c) "big crunch" theory,
(d) H-R diagram.
17.
A red shift in the spectrum of the light from an object indicates
the object is moving _____ you. (a) away from, (b) toward, (c) at
a right angle from, (d) none of the above.
18.
Currently, no evidence of life, past or present, has been found in
studies of _____. (a) Earth, (b) Mars, (c) the moon, (d) all of
the above.
19.
The easiest way to search for extraterrestrial life currently is
to use _____. (a) radio telescopes, (b) UFOs, (c) read the
National Inquirer, (d) space probes.