Astronomy Ch 16
Study - Print - List Cards - Export - Play Memory - Add To Favorites| Title: | Astronomy Ch 16 |
| Description: | accretion The sticking together of solid particles to produce a larger particle. (p. 370) <br />albedo The ratio of the light reflected from an object divided by the light that hits the object. Albedo equals 0 for perfectly black and 1 for perfectly white. (p. 353) <br />asteroid Small, rocky world. Most asteroids lie between Mars and Jupiter in the asteroid belt. (p. 363) <br />breccia Rock composed of fragments of earlier rocks bonded together. (p. 353) <br />comet One of the small, icy bodies that orbit the sun and produce tails of gas and dust when they approach the sun. (p. 363) <br />condensation The growth of a particle by addition of material from surrounding gas, atom by atom. (p. 369) <br />condensation sequence The sequence in which different materials condense from the solar nebula as we move outward from the sun. (p. 369) <br />differentiation The separation of planetary material according to density. (p. 371) <br />extrasolar planet A planet orbiting a star other than the sun. (p. 359) <br />Galilean satellites The four largest satellites of Jupiter, named after their discoverer Galileo. (p. 365) <br />gravitational collapse The process by which a forming body such as a planet gravitationally captures gas from its surroundings. (p. 368) <br />half-life The time required for half of the atoms in a radioactive sample to decay. (p. 366) <br />heat of formation In planetology, the heat released by in-falling matter during the formation of a planetary body. (p. 372) <br />heavy bombardment The intense cratering during the first 0.5 billion years in the history of the solar system. (p. 375) <br />Jovian planet Jupiterlike planet with a large diameter and low density. (p. 364) <br />meteor A small bit of matter heated by friction to incandescent vapor as it falls into Earth's atmosphere. (p. 366) <br />meteorite A meteor that survives its passage through the atmosphere and strikes the ground. (p. 366) <br />meteoroid A meteor in space before it enters Earth's atmosphere. (p. 366) <br />outgassing The release of gases from a planet's interior. (p. 372) <br />planetesimal One of the small bodies that formed from the solar nebula and eventually grew into protoplanets. (p. 369) <br />protoplanet Massive object resulting from the coalescence of planetesimals in the solar nebula and destined to become a planet. (p. 370) <br />radiation pressure The force exerted on the surface of a body by its absorption of light. Small particles floating in the solar system can be blown outward by the pressure of the sunlight. (p. 374) <br />solar nebula theory The theory that the planets formed from the same cloud of gas and dust that formed the sun. (p. 356) <br />terrestrial planet An Earthlike planet - small, dense, rocky. (p. 364) <br />uncompressed density The density a planet would have if its gravity did not compress it. (p. 368) |
| Number of Cards: | 25 |
| Author: | thesuhys13 |
| Created: | 2006-04-30 |
| Tags: | astronomy |
| Private: | No |
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