Download What is a planet

SPACE OBJECT
Planets
NOTES: Oct. 2-3
What is a planet: a celestial body moving in an elliptical orbit around a star.
The order of planets from the Sun, outward:
 Mercury
Fun Fact:
Inner Planets
_________________ is the
 _____________
hottest planet: Why?
Size:
 Earth
 Mars
 _________________
 Saturn
 _________________
 _________________
 Each planet
_________________
around the Sun
and
_________________
on it’s axis
Composition:
Temperature:
Outer Planets
Size:
Composition:
Temperature:
Moons
What is a moon: A rocky body covered with craters that
orbits around a ____________________
Fun Fact:
**Moons revolve around ______________________ and rotate on their axis.
 Earth only has _______________ moon.
 How long does it takes our Moon to revolve: ______________
 How long does it takes our Moon to rotate: _____________________
Planet with the MOST moons: ________________________(63)
Planets with the LEAST moons: _____________________________ and
______________________________ (0 moons)
Asteroids
Fun Fact:
What is an asteroid? Rocky bodies that orbit in the Asteroid Belt
Where is the Asteroid belt located?
Size: Asteroids vary in size and shape
Largest:
Smallest:
Movement: Asteroids revolve around the ________________
Why do scientists monitor their positions?
Meteoroids
Fun Fact:
Meteoroid: chunks of rock that move around within the solar system
Meteor:
chunks of rock from space that ________________ up when
entering a planet’s atmosphere
Meteors are often called _______________________________________.
Shooting stars are actually just ___________________________.
Meteorite: chunks of rock from space that __________________ a planet
or moon
Comets
Fun Fact:
Comets have 2 parts:
HEAD:
made of _____________________________________________
TAIL:
happens when the comet gets closer to the sun
during it’s orbit and the head begins to melt & stream
behind it
****Tail always faces _______________ from
the sun due to solar winds
Orbit shape: Long, narrow and ________________________
-Most come from regions far beyond Neptune
* ________________ Cloud or Kuiper Belt