RELATED TO CONSTELLATION TOPIC FOR GRADE 9

1. Near Earth Objects
Near-Earth Objects (NEOs) are comets and
asteroids that have been nudged by the
gravitational attraction of nearby planets into orbits
that allow them to enter the Earth’s neighborhood.

2. Near Earth Objects
• Comets
• Meteor
• Asteroids

3. COMETS
Comets are frozen leftovers from
the formation of the solar
system composed of dust, rock, and
ices. They range from a few miles to
tens of miles wide, but as they orbit
closer to the Sun, they heat up and
spew gases and dust into a glowing
head that can be larger than a planet.

4. Meteor
A meteor is a space rock that
enters earth's atmosphere
causing a streak of light to
appear in the sky. These are
sometimes referred to as
shooting stars.

5. Asteroids
Asteroids are small, rocky
objects that orbit the Sun.
Although asteroids orbit the
Sun like planets, they are much
smaller than planets.

6. Zodiac Sign

9. Sharon Cuneta
MEGASTAR

10. Nora Aunor
SUPER STAR

11. Vilma Santos
STAR FOR ALL
SEASON

12. Introduction to
Astronomy:
Stars

13. What is Astronomy?
Astronomy is the study of anything we
see in the sky, and beyond

14. Astrology
Astrology consists of a
number of belief systems that
hold that there is a relationship
between astronomical
phenomena and events or
descriptions of personality in the
human world.
Astrology has been
rejected by the scientific
community as having no
explanatory power for
describing the universe.

15. Stars
Stars are giant balls of
hot gas – mostly hydrogen,
with some helium and small
amounts of other elements.
Every star has its own
life cycle, ranging from a few
million to trillions of years, and
its properties change as it
ages.

17. Pre-assessment
A. Choose the letter of the best answer.
For numbers 1 to 3, use the table below that presents
information about stars A, B, C, and D.
1.Which star is the hottest?
A. A B. B C. C D. D
Star Color
A Red
B Yellow
C White
D Blue

18. 2.Which star is very similar to our sun?
A. A B. B C. C D. D
3. Which is the coolest star?
A. A B. B C. C D. D
4. How do stars appear to move in the night sky?
A. From East to West C. From West to East
B. North to South D. From South to North
Pre-assessment
Star Color
A Red
B Yellow
C White
D Blue

19. 5. Stars appear to move in the sky because
A. The earth is rotating on its axis.
B. The universe is expanding.
C. The night sky is rotating.
D. New galaxies are formed.
6. If you are located at the North Pole, where will you see
the Polaris?
A. Overheard
B. Just above the horizon
C. Around 45 ͦfrom the horizon
D. Polaris will not be seen in the North Pole.
Pre-assessment

20. 7. Which constellation is prominently seen in the sky
during summer?
A. Orion C. Hercules
B. Pegasus D. Virgo
8. Based on apparent magnitude, which of the
following stars is the brightest?
A. Alpha Centauri C. Rigel
B. Betelguese D. Sirius
Pre-assessment

21. 9. Why do stars have colors?
A. It is because of the presence of oxygen.
B. It is because of the presence of carbon dioxide.
C. It is because of varied temperatures.
D. It is because of the different locations.
10. Stars can be found in large groups throughout the
universe. What are these groups called?
A. solar system C. constellations
B. comets D. asteroids
Pre-assessment

22. Characteristics of Stars
• Color and Temperature
• Size
• Brightness

23. Color
Vary in color
o Blue
o Yellow
o Red