UNIVERSE
REVIEW
8.8 A,B,C,D
Use the above diagram to label the parts of the
wave.
1 Trough
2 Crest
3 Wavelength
4 Amplitude
Which of the above waves has the greatest
energy?
The higher the
frequency, the more
energy a wave is
carrying.
Which electromagnetic waves can humans
see?
A Microwaves
B X-rays
C Light
D Radio
The higher the
frequency, the more
energy a wave is
carrying.
Which of the following electromagnetic waves has the
most energy on the electromagnetic spectrum?
A Infrared
B X-Rays
C Gamma
D Radio
Sequence the three waves by their
wavelengths from shortest to longest.
A.
B.
C.
D.
Wave Z, Wave Y, Wave X
Wave Z, Wave X, Wave Y
Wave Y, Wave X, Wave Z
All three have equal wavelengths.
A light-year is a measurement of —
A time
B distance
C energy
D days in a year
Which of the following measurements is best
used to measure distances in the universe?
A Meter (m)
B Kilometer (km)
C Astronomical unit ( AU)
D Light-year (ly)
In a red shift, the wavelengths of light
appear to become —
F shorter
G longer
H faster
J bluer
http://www.faradayschools.com/ks4-the-red-shift/
A galaxy that is moving toward Earth will
show —
A a red shift in its spectrum
B an increase in light-years
C a blue shift in its spectrum
D increased amounts of energy
What do all galaxies have in common?
A They travel around the Sun.
B They are the same shape.
C They are made of stars and nebulae.
D They are the same distance from Earth.
Galaxies are classified by
A. Shape
B. Size
C. Color
D. Age
Our sun is one of about 250 billion stars in
the Milky Way galaxy. The Milky Way is
a(n):
A. elliptical galaxy
B. cluster galaxy
C. irregular galaxy
D. spiral galaxy
http://thenextweb.com/google/2012/11/14/100000-stars-googles-latest-chrome-experiment-tapsnasa-to-visually-explore-the-milky-way/
Proxima Centauri is 4.3 light years away
from Earth. A light year is about 6 trillion
miles. About how far away (in miles) is
Proxima Centauri from Earth?
A. 2.6 billion miles
B. 25.8 billion miles
C. 2.6 trillion miles
D. 26 trillion miles
4.3 light years
x 6
25.8 trillion miles
The picture above shows sand used to
make a model of a galaxy. In the model,
each small grain of sand best represents:
A. a comet
B. a black hole
C. an asteroid
D. a star
Astronomers use a light year as the
unit for reporting which of the
following items:
Light year = the
distance light travels
in a year
A. The diameter of stars
B. The age of stars
C. The distance between stars
D. The brightness of stars
How are the wave energy and the
wavelength in the electromagnetic
spectrum related?
A. As wavelength gets shorter, the waves
have more energy.
B. As wavelength gets longer, the waves
have more energy.
C. As wavelength gets shorter, the waves
have less energy.
D. As wavelength gets shorter, the waves
have the same energy.
104
102
1
10-2
10-5
10-6
10-8
Wavelength in centimeters
According to the diagram, which of the
following types of wave energy has the
HIGHEST frequency?
A.
B.
C.
D.
gamma ray
ultraviolet
infrared
microwave
10-10
10-12
What part of the electromagnetic spectrum
do astronomers use to determine the
temperature of a star?
a) X-rays
b) Gamma rays
c) Visible light
d) UV light
Astronomers use an instrument called a
spectroscope to see the colors a star emits.
It disperses, or separates, white light from a
star into a very wide spectrum of colors.
This helps us to determine a star’s
temperature.
http://amazing-space.stsci.edu/resources/explorations/groundup/lesson/basics/g23/
Complete the life cycle of a high-mass star:
main sequence  super-giant  _____?______  neutron star
a) white dwarf
b) red giant
c) supernova
d) nebula
http://www.schoolsobservatory.org.uk/astro/stars/lifecycle
White dwarfs are a group
of stars that are —
a. extremely bright and
average in
temperature
b. low in brightness but
high in temperature
c. average brightness
and average in
temperature
d. average in
brightness but high
in temperature
White dwarfs are very
small stars, so do not
emit very much light
The Sun is a yellow star
that is average in both
brightness and in
temperature. The Sun
belongs to which
group?
a.Giants
b.Main sequence
c. Supergiants
d.White dwarfs
The Sun and Alpha Centauri shine with about the
same brightness, yet the Sun appears to us to
be several hundred times brighter than Alpha
Centauri. What is the best explanation for
this?
a) Alpha Centauri is a larger star than the Sun.
b) The Sun generates energy through the
process of fusion.
c) The Sun is thousands of times closer to Earth
than Alpha Centauri.
d) Some light from Alpha Centauri is blocked by
the Moon.
Brenda has identified a new star. She wants to
determine the elements in the star by studying the
pattern of dark lines in the absorption spectrum.
What instrument should she use to identify the
elements in the star?
A electron microscope
B telescope
C spectroscope
D gas chromatograph
http://academics.wellesley.edu/Chemistry/Chem105manual/Chem105manualSummer07/Lab03/lab03.html
In what ways are
Barnard’s Star and
Antares alike?
a.both are dim
b.both are bright
c. both are about
the same
temperature
d.both are main
sequence stars
According to the HR
diagram, the star
Antares is classified
as a:
a. main sequence
star
b. white dwarf star
c. protostar
d. supergiant star
What color is
Altair?
a.Blue
b.Red
c. Yellow
d.White
The Sun is a yellow star that is average in
both brightness and in temperature. The Sun
belongs to which group?
a)
b)
c)
d)
Giants
Main sequence
Supergiants
White dwarfs
The Milky Way galaxy is a discshaped, spiral galaxy
estimated to be 130,000
light years in diameter.
According to the diagram
above, how would you
describe the location of the
Sun within the Milky Way
galaxy?
A The Sun is near the center of
the galaxy.
B The Sun is located just
outside of the galaxy.
C The Sun is near the edge of
the galaxy.
D The Sun is at the center of
the galaxy.
The Milky Way galaxy is described as a disk of
stars orbiting a central point on the disk.
Which of these best explains why people on Earth
cannot see the entire shape of the Milky Way?
a) Earth is a part of this galaxy.
b) Many more stars exist outside the galaxy.
c) The stars in the center of the galaxy are extremely
small.
d) The center of the galaxy consists of a dense cluster
of stars.