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Flashcards in Solar System - General Deck (26)
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1

Asteroid

A small solar system object composed mostly of rock, many of these objects orbit the Sun between Mars and Jupiter, their size can range anywhere from 10 meters in diameter to less than 1,000 kilometers

2

Coma

The cloud that forms around a comet’s nucleus.

3

Comet

A small solar system object consisting of ice and other compounds

4

Dust Tail

This type of comet tail forms when the solar wind separates dust from the coma, pushing it outward away from the Sun in a slightly curved path

5

Gas-Ion Tail

This type of comet tail forms when the solar wind separates gases from the coma, pushing them outward away from the Sun in a straight path

6

Meteor

The flash of light that we see in the night sky caused by the friction of a meteoroid passing through the atmosphere

7

Meteor Shower

Many and sustained flashes of light that are seen in the night sky as a result of the Earth passing through the former part of a comet

8

Meteorite

Any part of a meteoroid that survives its fall through the atmosphere and lands on the Earth

9

Meteoroid

An interplanetary chunk of matter that is smaller than a kilometer in diameter and most frequently measured in millimeters

10

Comet Nucleus

The solid rocky part of a comet

11

Solar Wind

A stream of charged particles ejected from the surface of a star

12

Plasma

4th Phase of matter (excited gas)

13

orbit

path around the sun

14

elliptical

oval shaped path planets follow

15

inertia

tendency to travel in straight lines or resist change in motion. Dependent upon mass of object.

16

umbra

dark inner portions of a sunspot

17

penumbra

lighter outer portions of a sunspot

18

rotation

spinning on an axis

19

axis

imaginary line about which a planet spins

20

Aurora Borealis

The Northern Lights -- where the magnetosphere meets the atmosphere

21

solar wind

stream of high energy particles

22

revolution

1 full orbit around the sun

23

Convection Zone

This part of the sun contains enormous regions of gas traveling up and down as it is heated and cooled.

24

Solar Cycle

The approximate 11yr variation in frequency of sunspots, CMEs, and solar flares

25

Terrestrial

Earth like,dense, and rocky, -- inner planets including Mercury, Venus, Earth and Mars

26

Jovian

Outer Gaseous, low-density, planets: Jupiter, Saturn, Uranus, Neptune.