Chapter 8 Terms Flashcards Preview

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Flashcards in Chapter 8 Terms Deck (21):
1

Accretion

is the addition of matter to a body

2

Asteroid

is a small, generally rock, solid body orbiting the Sun

3

Asteroids Belt

is a region between the orbits of Mars and Jupiter in which most of the Solar System’s asteroids are located

4

Bode’s Rule

is a numerical expression for the approximate distances of most of the planets from the Sun

5

Comet

is a small body in orbit around the sun, consisting of a tiny, icy core and a tail of gas and dust

6

Condensation

is the conversion of free gas atoms or molecules into a liquid or solid

7

Dwarf Planet

is an object that orbits the Sun and is massive enough that its gravity compresses in into an approximately spherical shape

8

Exoplanet

is a planet not orbiting our sun

9

Gravitational Lensing

an object that bends space

10

Inner Planet

a planet orbiting in the inner part of the solar system and (Mercury, Venus, Earth, and Mars)

11

Interstellar Cloud

is a cloud of gas and dust in between the stars

12

Interstellar Grain

is solid dust particles in interstellar space that absorb starlight and makes stars that are far appear dimmer and redder than they are

13

Jovian Planet

Saturn, Uranus, and Neptune

14

Kuiper Belt

a region from which some comets come

15

Oort Cloud

is a vast region in which comet nuclei orbit

16

Outer Planet

is a planet who’s orbit lies in the outer part of the Solar System (Jupiter, Saturn, Uranus, and Neptune)

17

Planetesimal

is a small, solid body that when accreted together, they form a planet

18

Solar Nebula

the rotating disks have a gas and dust from which the Sun and planets formed

19

Solar Nebula Theory

the theory that the Solar System formed from a rotating cloud of gas and dust

20

Terrestrial Planet

is a rocky planet similar to Earth in size and structure (Mercury, Venus, Earth, and Mars)

21

Transit

the passage of a planet directly between the observer and the Sun