
Galaxies and the Universe (Study Guide Mastery Ch. 31)
Authored by Anna Luehrs
Science
11th Grade
NGSS covered
Used 6+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stars in the giant branch of the H-R diagram that pulsate in brightness because of the expansion and contraction of their layers.
a. Cepheid variables
b. luminosity
c. RR Lyrae variables
d. Sagittarius
e. variable stars
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stars that have periods of pulsations between 1.5 hours and 1 day, and on average, have the same luminosity.
a. Cepheid variables
b. luminosity
c. RR Lyrae variables
d. Sagittarius
e. variable stars
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stars with pulsation periods between 1 day and more than 100 days.
a. Cepheid variables
b. luminosity
c. RR Lyrae variables
d. Sagittarius
e. variable stars
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
By measuring a star's period of pulsation, astronomers can determine this.
Cepheid variables
luminosity
RR Lyrae variables
Sagittarius
variable stars
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radio waves are used to map the Milky Way because they can penetrate the interstellar gas and dust without being scattered or absorbed.
True
False
Tags
NGSS.HS-PS4-3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Milky Way's galactic nucleus is surrounded by a nuclear bulge that sticks out of the galactic disk.
True
False
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Around the Milky Way's nuclear bulge and disk is the halo, where the globular clusters are located.
True
False
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