Unit 4 Chpt 14 Solar Sytem Debris

According to Figure 14.1 (”Inner Solar System”), the asteroid groups with the smallest perihelion distances also tend to have orbits that

are most eccentric

Most main-belt asteroids are about the size of

a small U.S. city

Spectroscopic studies indicate that the majority of asteroids contain large fractions of

the

Trojan asteroids orbiting at Jupiter’s Lagrangian points are located

behind and in front of Jupiter, sharing its orbit

Trojan asteroids orbiting at Jupiter’s Lagrangian points are located

point away from the Sun;

Compared with the orbits of the short-period comets, the orbits of long-period comets

can come from all directions

Kuiper belt objects are not regarded as planets because

their masses are too low to clear

According to the figure in Discovery 14-1, an impact resulting in global catastrophe is expected to occur roughly once per

million years

A meteorite is a piece of interplanetary debris that

survives the trip to the surface

According to Table 14.1, the meteor shower that occurs closest to the autumnal equinox is the

Orionids