Asteroids Flashcards

1
Q

Solar system composition:

A

70% hydrogen
28% helium
2% metals

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2
Q

what are the most common meteorites?

A

95% stony

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3
Q

The next common meteorite?

A

2-3% iron

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4
Q

Which is found more often? why?

A

iron meteors are more common because they are more distinguishable.

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5
Q

whish is the least common?

A

1% stony iron

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6
Q

a new nucleus would be called a _____

A

daughter nucleus

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7
Q

and old nucleus would be called

A

parent nucleus

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8
Q

what determines age of a meteor?

A

its radioactivity

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9
Q

what is true of the relationship btwn daughter and parent nuclei

A

as parent nuclei decrease overtime, daughter nuclei increase.

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10
Q

meteors have what essential human biological necessity?

A

amino acids

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11
Q

What are two types of solar debris?

A

Asteroid and comets

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12
Q

which is closets to the sun between asteroids and comets?

A

asteroids are closest to the sun, comets are farther.

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13
Q

the asteroid belt is between

A

mars and jupiter

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14
Q

are all iron and stony irons processed?

A

yes, iron and stony iron are processed.

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15
Q

How does the asteroid belt orbit?

A

along with the planets

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16
Q

are near earth asteroids long or short lived??

A

short lived

17
Q

What are the two types of comets?

A

long period and short period

18
Q

how do short period comet orbit?

A

they orbit like the planets

19
Q

how do long period comets orbit?

A

they orbit randomly

20
Q

Where are short period comets located?

A

kuiper belt

21
Q

where do long period comets stay?

A

oort belt

22
Q

what is the physical difference between kuiper belt and oort belt?

A

kuiper belt is a disc

oort belt is a sphere around the solar system

23
Q

when a comet goes near the sun, the state it is in is

A

sublimation

24
Q

What features of our solar system provide clues to how it formed?

A
  1. Patterns of Motion
  2. Two Types of Planets
  3. Asteroids and Comets
25
Q

angular momentum

A

move closer to axis = speed up

EX: ice skater

26
Q

the birth of planets and stars happen by

A

dust, then clumping of dust and getting bigger