This document compares and contrasts comets, meteors, and asteroids. It provides the following key details: - Asteroids are small rocky objects that orbit the Sun. They are leftovers from the early Solar System and may have their own moons. Despite their small size, water can flow on asteroid surfaces. - Meteors are meteoroid objects that enter Earth's atmosphere, where they vaporize and become "shooting stars." - Comets orbit the Sun like asteroids but are made of ice and dust rather than rock. As they approach the Sun, their ice and dust vaporizes, forming the comet's distinctive tail.

1. COMETS, METEORS AND
ASTEROIDS
SCIENCE 8
2ND QUARTER
TEACHER: MRS. MARIA NIKOLE DY ORCALES

2. OBJECTIVE:
•Compare and contrast
comets, meteors and
asteroids

6. ASTEROID
• An asteroid is a small rocky object that orbits
the Sun
• smaller than a planet, but they are larger than
the pebble-size objects we call meteoroids

7. PICTURES OF AN ASTEROID

8. INTERESTING FACTS ABOUT AN ASTEROID:
• They are leftover of the early Solar System
• Asteroids go around planets
• They have their own moons
• They are small planets but are too small to
support life
• Despite their small size, water may flow on
asteroid surfaces.

10. METEOR
• If a meteoroid comes close enough to Earth and
enters Earth’s atmosphere, it vaporizes and turns into
a meteor: a streak of light in the sky
• Because of their appearance, these streaks of light
are sometimes called "shooting stars." But meteors
are not actually stars

13. COMET
• Comets orbit the Sun, like asteroids. But comets are made of
ice and dust—not rock.
• As a comet’s orbit takes it toward the Sun, the ice and dust
begin to vaporize. That vaporized ice and dust become the
comet’s tail. You can see a comet even when it is very far
from Earth. However, when you see a meteor, it’s in our
atmosphere.

14. PARTS OF A COMET

15. Asteroid Meteor Comet
• a small rocky
object that
orbits the Sun
• A meteoroid that
is about to enter
the earth’s surface
• Orbits the sun
like asteroids
• made of ice and
dust—not rock

16. Asteroid

17. Comet

18. Meteor

19. SHORT QUIZ (TRUE OR FALSE)
• 1. Comets, meteors and asteroids are found in
outer space
• 2. An asteroid is a small rocky object that orbits the
Sun
• 3. Asteroids are considered small planets but
cannot support life
• 4. A comet has parts too.
• 5. Meteors are stars.