Chapter 17&18 problems su 2019 (1)
docx
keyboard_arrow_up
School
Faulkner University *
*We aren’t endorsed by this school
Course
1305_52_10
Subject
Astronomy
Date
Dec 6, 2023
Type
docx
Pages
3
Uploaded by DrLlamaPerson381
Michelle Davis
Assignment for Module 2
Chapter 17 & Chapter 18:
Short Answer and Exercises
All of the matching and multiple choice questions for these chapters should be reviewed – these will be helpful for
the test and general learning the information presented.
30 points
Both correctness and completeness will be used in the evaluation of your submission.
Questions 1-8 are relate to concepts in
Chapter 17
Questions 9-16 are relate to concepts in
Chapter 18
1.
Name
and
define
three major surface features of the Moon.
(2pts)
The lunar highlights are the light-colored rock surface easily seen on the moon.
The lunar surface exhibits large, flat areas called maria. Craters are the best-
known feature of the moon’s surface. Craters comes from the Greek word krater,
meaning bowl.
2.
How old are the rocks brought back from the Moon?
(1pts)
The rocks brought back from the moon are no older the 4.4 billion years and no
younger than 3.1 billion years old.
3.
What does the age of the moon rocks imply about the age of the moon
relative to the age of the earth?
(1pts)
4.
What is the difference between a waxing phase and a waning phase of the
Moon?
(1pts)
Write enough that it is apparent you understand these two concepts.
Waxing phase means that the illuminated portion of the moon is getting larger
each day. Waning phase means that the illuminated portion of the moon is getting
smaller.
5.
What are the relative positions of the Earth, the Sun, and the Moon
(2pts)
a.
During a lunar eclipse? During a lunar eclipse the sun, Earth, and the
moon are positioned in nearly a straight line, with the Earth between
the Sun and the moon.
b.
During a solar eclipse? During a solar eclipse the three bodies must
be aligned during new or full moons. The orbital plane of the moon is
tilted approximately 5 degrees with respect to the Earth’s orbital
plane, eclipses can occur only at a “node”, a point which the moon is
crossing the Earth’s orbital plane.
6.
What is the difference between a spring tide and a neap tide?
(2pts) Write
enough that it is apparent you understand these two concepts.
A spring tide is when the sun, earth and the moon are positioned in nearly a straight line, the
gravitational forces of the moon and the sun combine to produce higher high tides and lower
tides than usual. The variations between high and low tides are greatest at this time. A neap tide
is when the moon is at first quarter or last quarter phase, the sun and the moon are at angles of
90 degrees with respect to the Earth. At these times, the gravitational forces of the moon and
the sun tend to cancel each other , and there is a minimum difference in the height of the tides.
7.
Which moon is the largest in the solar system, and what is its parent
planet?
(1pts)
The largest moon in the solar system is Ganymede and its parent planet is Jupiter.
8.
When is it correct and proper to call a meteoroid a meteor?
(2pts)
A meteoroid is called a meteor when it enters the Earth’s atmosphere and becomes luminous
because of the tremendous heat generated by friction with the air.
a.
When is it called a meteorite? Most meteors are vaporized in the
atmosphere but larger ones survive the flight through the
atmosphere and strike the Earth’s surface this is called a meteorite.
9.
Describe the composition of a comet and name the various parts
(2pts)
A comet is relatively small object that is composed of dust and ice and revolves about the Sun in
highly elliptical orbit. As a comet comes near the Sun, some surface vaporizes to form a gaseous
head and a long tail. A comet has 4 various parts called nucleus, head or coma, the long,
voluminous, and magnificent tail and a spherical hydrogen cloud.
10.
Define the term – universe
(2pts)
The universe is the totality of all matter, space, and energy.
11.
Which is the larger unit of distance, the light-year or the par- sec? How
much larger is one than the other? (2pts)
A light year is the larger unit and 1 par-sec equals 3.26 light-years.
12.
Describe the various layers of the Sun beginning from the center. (2pts)
The various layers of the Sun are the core, radiative zone, convective zone,
photosphere,and chromosphere.
13.
How far away and what is the name of the star closest to the Sun?
(2pts)
(
don’t google this!)
Proxima Centauri is the closest star to the sun and it's about 4.22 light years away.
14.
What is another term for brown dwarf? Have any brown dwarfs been
found? (2pts)
Another term for brown dwarf is failed stars. They have found hundreds of brown
dwarfs.
15.
When our Sun first moves off the main sequence (H-R diagram), what type
of star will it become? (2pts)
They are called supergiants.
16.
What is Hubble’s law, (
what two properties are compared?
)
and what
conclusion about the universe do astronomers draw from it?
(2pts)
Hubble’s law is the greater the recessional velocity of a galaxy, the farther away
the galaxy. They concluded that the universe is still expanding.
17.
What is the galaxy classification of the Milky Way galaxy? (2pts)
The galaxy classification of the Milky Way galaxy is spiral.
a.
What is special about the Milky Way galaxy?
The milky way galaxy is special because it contains about 100 billion to 200 billion
stars and has 3 basic parts (nuclear bulge, disk and a halo).
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help