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 Task #1:
You will begin
your webquest by learning how to identify stars by their magnitude, color,
and temperature, and spectral class.
Click Stars: Lights in The Sky
and write out the answers to the following questions on the answer sheet
provided.
Answers for this section will be found in LIGHTS IN THE SKY or in our book.
1.) - Name the
brightest star in the night sky.
2) – About how
many constellations are there in the night sky?
3) – If Sirius
is the brightest star, why isn’t Sirius visible during the day? …you should be able to think
this question through.
4) – What does color indicate for a star?
book page 127
5)
What color are the hottest stars? book page 127
6)
What color are the coolest stars? book page 127
7)
What color is our sun?
book page 127
8)
- Finally, design a colored diagram on your project paper that
displays the colors of the coolest stars on the left to the hottest stars
on the right.
Answers
for this section will be found in THE
CIRCLE OF LIFE paragraph or in our book.
9) - What color is the coolest main sequence star? book, page 133
b. What color is the hottest main
sequence star? book page 133
10) -What color is our sun? book, page 132
11) -What are
beginning stars called?
12) -What is
the “stable” phase of a star’s life know as?
13) – Why can
smaller stars live longer?
14) What is the earliest stage
of a star? book, page 137
15) What does proto mean? book, page 137
On the left-hand
side of this website, click on Galaxies to complete the following questions
16)
What is a galaxy?
17)
What do galaxies contain?
(9 things)
18)
What galaxy do we live in?
19)
Approximately how many stars are in our galaxy?
20)
What part of the Milky Way Galaxy is earth found in?
21)
What shape does our galaxy have? Use our book, page 144
22)
What is the age of stars in our galaxy? Use our book, page 144
23)
What shape is an elliptical galaxy? Use our book, page 144
24)
What kinds of stars does it have? Use our book, page 144
Task #2: Go to The Life and Death
of Stars. Read the short section on "Where are stars
born" and see pictures of the protostars of M16: and other
nebulae (stars in formation) on this page.
Continue by
reading about the Hertzsprung-Russel diagram, page 132 in our book.
25)
What two characteristics of stars are shown in an H-R
(Hertzsprung-Russel)diagram?
26)
The star Procyon B has a surface
temperature that is much less than the sun’s. Using the H-R diagram, determine what
type of star a Procyon is.
Task #3: Just for FUN. Because stars
are quite more massive than most planet sized objects, the gravitational
pull on objects close to stars is astronomically large. Find out Your Weight On Other
Worlds like different types of stars and even planets.
27) On which planet do you
weigh the most?
28) On which planet do you
weigh the least?
29) What is your weight on “The
Moon”?
30) On which star would you
weigh the most?
31) How much would you weigh on
our Sun?
Task #4: Now check out the All
Star Line Up
32)
Click on any star of your choice and list one interesting fact
about that star.
FYI:
The life cycle
of stars continues.......All stars eventually become Red Giants or Super
Giants. FYI
When the
hydrogen supply in the core begins to run out, and the star is no longer
generating heat by nuclear fusion, the core becomes unstable and contracts.
The outer shell of the star, which is still mostly hydrogen, starts to
expand. As it expands, it cools and glows red. The star has now reached
the red giant phase.
It is red because it is cooler than
it was in the main sequence star stage and it is a giant because the outer
shell has expanded outward.
Task #6: Make a project poster
displaying the Life Cycle of Stars. Label and color the star types and
progression correctly for full credit.
 Task #9: Go to The Space Place and
play the Black Hole Board game. Get a group together, print out the color
game board and adventure cards, bring the game to school, and have all
members of your gaming group see me for extra credit.
Task #11: Finally, go take the
interactive five-question quiz below and see how much you have mastered
about the Life Cycles of Stars.
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