Download Week 7 Notes Comets, Meteors, and Asteroids

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Outer space wikipedia, lookup

Tropical year wikipedia, lookup

IAU definition of planet wikipedia, lookup

History of Solar System formation and evolution hypotheses wikipedia, lookup

Planets beyond Neptune wikipedia, lookup

Definition of planet wikipedia, lookup

Astrobiology wikipedia, lookup

Aquarius (constellation) wikipedia, lookup

Dialogue Concerning the Two Chief World Systems wikipedia, lookup

Extraterrestrial life wikipedia, lookup

Orrery wikipedia, lookup

Astronomical unit wikipedia, lookup

Astronomical spectroscopy wikipedia, lookup

Impact event wikipedia, lookup

Sample-return mission wikipedia, lookup

Panspermia wikipedia, lookup

Directed panspermia wikipedia, lookup

Late Heavy Bombardment wikipedia, lookup

Formation and evolution of the Solar System wikipedia, lookup

Solar System wikipedia, lookup

Comparative planetary science wikipedia, lookup

Oort cloud wikipedia, lookup

Comet Shoemaker–Levy 9 wikipedia, lookup

Timeline of astronomy wikipedia, lookup

Comet Hale–Bopp wikipedia, lookup

Comet wikipedia, lookup

Week 7 Notes
Comets, Meteors, and Asteroids
Ch 3, Section 5
Page 104 – 107
a. A __COMET__ is a dirty __SNOWBALL__ about the size of a
b. Comets are loose collections of __ICE__, __DUST__, and
small __ROCKY__ particles.
c. Comets orbits are usually very __LONG__ narrow
A. A Comet’s Head
a. The cloud of __GAS__ and __DUST__ that comes off the
head when a comet gets near the __SUN__ is called the
b. The __SOLID__ inner core of a comet is called the
B. A Comet’s Tail
a. Gas and Dust from a comet’s __HEAD__ streams out to form
a __TAIL__
b. Comet means __LONG-HAIRED STAR__ in Greek
c. Most comets have __2__ tails: __GAS TAIL__ and __DUST
d. The comet’s __TAILS__ point __AWAY__ from the __SUN__
e. A __COMET’S__ tail can be more than __100__ million
kilometers long. (62 million miles)
C. Origin of Comets
a. The __KUIPER BELT__ is a doughnut-shaped region that
extends beyond __NEPTUNE’S__ orbit to about __100__ times
Earth’s __DISTANCE__ to the sun.
b. The __OORT CLOUD__ is a __SPHERICAL__ region that
__SURROUNDS__ the Solar System about 1,000 time the
distance between __PLUTO__ and the __SUN__
a. Objects in __SPACE__ that are too __SMALL__ and
__NUMEROUS__ arec called __ASTEROIDS__
b. __MOST__ asteroids __REVOLVE__ around the sun between
the orbits of __MARS__ and __JUPITER__
c. The area between Mars and Jupiter is known as the
d. __ASTERIODS__ are thought to be __LEFT-OVER__ parts of
the __SOLAR SYSTEM__ that never formed into a __PLANET__
a. A __SHOOTING STAR__ is actually called a __METEOR__
b. On average there is a __METEOR__ every __10__ minutes
c. A __METEROID__ is a chunk of __ROCK__ or __DUST__ in __SPACE__.
Meteoroids come from __COMETS__ or __ASTEROIDS__
d. When a meteoroid enters __EARTH’S__ atmosphere __FRICTION__ with
the air creates __HEAT__ and produces a streak of __LIGHT__ in the sky.
e. __METEOROIDS__ that are too __BIG__ make it pass the
__ATMOSPHERE__ and hit Earth’s surface are called __METEORITES__
f. The __CRATERS__ on the __MOON__ were formed by __METEOROIDS__