Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
achondrite
|
Stony meteorite containing no chondrules or volatiles. (p. 455)
|
|
|
carbonaceous chondrite
|
Stony meteorite that contains both chondrules and volatiles. These chondrites may be the least-altered remains of the solar nebula still present in the solar system. (p. 455)
|
|
|
chondrite
|
A stony meteorite that contains chondrules. (p. 455)
|
|
|
chondrule
|
Round, glassy body found in some stony meteorites. Believed to have solidified very quickly from molten drops of silicate material. (p. 455)
|
|
|
coma
|
The glowing head of a comet. (p. 464)
|
|
|
dust tail
|
A comet tail composed of dust released from the nucleus and pushed away by the pressure of sunlight. Also known as a type II tail. (p. 464)
|
|
|
gas tail
|
A comet tail composed of ionized gas atoms released from the nucleus and carried outward by the solar wind. Also called a type I comet tail. (p. 464)
|
|
|
meteor shower
|
A multitude of meteors that appear to come from the same region of the sky. Believed to be caused by comet debris. (p. 456)
|
|
|
Oort cloud
|
The hypothetical source of comets. A swarm of icy bodies believed to lie in a spherical shell extending to 100,000 AU from the sun. (p. 462)
|
|
|
stony-iron meteorite
|
A meteorite composed of stone and iron mixed together. (p. 455)
|
|
|
type I comet tail
|
See gas tail.
|
|
|
type II comet tail
|
See dust tail.
|
|
|
Widmanstatten pattern
|
Bands in iron meteorites due to large crystals of nickel-iron alloys. (p. 455)
|
