Where do carbonaceous chondrite meteorites originate? A. They contain substantia
ID: 1296521 • Letter: W
Question
Where do carbonaceous chondrite meteorites originate?
A.
They contain substantial amounts of carbon, carbon compounds, and organic molecules, meaning they predate the formation of the solar system.
B.
They are fragments of undifferentiated asteroids.
C.
They are from asteroids that were heated and then cooled. Collisions with other asteroids cause them to break apart, and pieces of the crust then form carbonaceous chondrite meteoroids.
D.
Scientists believe that most meteoroids were once part of asteroids large enough to have remained in a molten state for much of their formation period.
E.
They are found in ancient rock outcrops in Antarctica.
The most common type of meteorite is:
A.
stony
B.
iron
C.
stony-iron
D.
carbonaceous
The Widmanstatten pattern indicates that:
A.
The meteorite contained a higher than average percentage of iron.
B.
The meteorite contained amino acids.
C.
The meteorite was at least partially molten at one time.
D.
The meteorite originated from Mars.
Iron meteoroids tend to be homogeneous in composition because:
A.
Similar particles tend to stick together more readily than different particles.
B.
They are pieces of an asteroid that differentiated before it broke up.
C.
They are too small to differentiate and therefore are homogeneous throughout.
D.
They formed early in the history of the solar system when its composition was homogeneous.
please i need a help in these question what is the correct answer please
A.
They contain substantial amounts of carbon, carbon compounds, and organic molecules, meaning they predate the formation of the solar system.
Explanation / Answer
(1) D
They are comprised of roughly equal amounts of nickel-iron and stone and are divided into two groups: pallasites and mesosiderites. The stony-irons are thought to have formed at the core/mantle boundary of their parent bodies.
(2) A
(3) A
the iron content is approximately 90 to 95% with the remainder comprised of nickel and trace elements. Iron meteorites are subdivided into classes both by chemical composition and structure. Structural classes are determined by studying their two component iron-nickel alloys: kamacite and taenite.
These alloys grow into a complex interlocking crystalline pattern known as the Widmanst
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