Asteroids Flashcards
Solar system composition:
70% hydrogen
28% helium
2% metals
what are the most common meteorites?
95% stony
The next common meteorite?
2-3% iron
Which is found more often? why?
iron meteors are more common because they are more distinguishable.
whish is the least common?
1% stony iron
a new nucleus would be called a _____
daughter nucleus
and old nucleus would be called
parent nucleus
what determines age of a meteor?
its radioactivity
what is true of the relationship btwn daughter and parent nuclei
as parent nuclei decrease overtime, daughter nuclei increase.
meteors have what essential human biological necessity?
amino acids
What are two types of solar debris?
Asteroid and comets
which is closets to the sun between asteroids and comets?
asteroids are closest to the sun, comets are farther.
the asteroid belt is between
mars and jupiter
are all iron and stony irons processed?
yes, iron and stony iron are processed.
How does the asteroid belt orbit?
along with the planets
are near earth asteroids long or short lived??
short lived
What are the two types of comets?
long period and short period
how do short period comet orbit?
they orbit like the planets
how do long period comets orbit?
they orbit randomly
Where are short period comets located?
kuiper belt
where do long period comets stay?
oort belt
what is the physical difference between kuiper belt and oort belt?
kuiper belt is a disc
oort belt is a sphere around the solar system
when a comet goes near the sun, the state it is in is
sublimation
What features of our solar system provide clues to how it formed?
- Patterns of Motion
- Two Types of Planets
- Asteroids and Comets
angular momentum
move closer to axis = speed up
EX: ice skater
the birth of planets and stars happen by
dust, then clumping of dust and getting bigger
