stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Earth Science ch 30 study guide Flashcards | StudBud
Explore
/
Earth Science ch 30 study guide
Earth Science ch 30 study guide
25 terms
·
StudBud Administration
·
89 plays
#science, #astronomy, #space
Flashcards
25 cards
F
Practice quiz
P
Host live
L
Questions
25
Answers
1
Variable stars get brighter as they get larger
True
False
2
Which of the following is a characteristic of a population II star?
age of fewer than 10 billion years
found in spiral galaxies.,
located in disk arms
trace amounts of heavy elements
3
The equation v=Hd shows the relationship between the speed at which a galaxy moves its distance
True
False
4
States that the universe began as a point and has been expanding ever since.
Superclusters
Hubble Constant
Cosmic Background Radiation.
Big Bang Theory
5
The Milky Way and Andromeda are larger that other galaxies in the Local Group.
True
False
6
The Sun is classified as a Population II star
False
True
7
Flat disks that do not have spiral arms
A
E7
SO
IRR
8
The Milky Way and the Andromeda are both...
galaxies
nebulae
quasars
stars
9
If the average density is higher that the critical density, the universe is ...
flat
open
closed
round
10
Cosmic background radiation has a wavelength of approximately 1 mm, which makes it...
microwave radiation
X-ray radiation
gamma ray radiation
infrared radiation
11
Normal Spiral
A
EO
SO
S
12
Barred Spiral
C
E7
SB
IRR
13
Redshift is used as evidence that the universe is contracting.
True
False
14
What Characteristics of radio waves makes them useful for determining the shape of a galaxy?
their variable energy
their easy visibility
their long wavelength
their high frequency
15
Core of a galaxy in which highly energetic objects or activities are located
Hubble Constant
Cosmic Background Radiation
Superclusters
Active Galaxy Nucleus
16
On a graph, Hubble's law is represented by a straight line.
True
False
17
Irregular Galaxy
IRR
C
E7
A
18
Recent observations shot that the rate of expansion of the universe is...
speeding up
constantly changing
slowing down
stabilizing
19
The local group is the galactic group that includes the Milky Way
True
False
20
Study of the universe
Hubble Constant
Superclusters
Cosmology
Big Bang Theory
21
A value of approximately 70 kilometers per second per megaparsec
Hubble constant
23 Percent
72 Percent
Superclusters
22
Round Elliptical
EO
C
A
E7
23
RR Lyrae and Cepheid are 2 categories of variable stars
False
True
24
Percent of the universe composed of dark energy
Cosmic Background Radiation
72 Percent
Superclusters
23 Percent
25
Which ratio best expresses the mass of the Sun compared to the mass of the Milky Way?
1: 100 billion
1: 100 thousand
1: 100 trillion
1: 100 million
