Chapter 20 Earth Science

Front 1

Astronomical unit (AU)

Back 1

The average distance between the sun and earth

Front 2

Terrestrial planets

Back 2

The inner planets

Front 3

Prograde rotation

Back 3

Appears to spin in a counterclockwise direction

Front 4

Retrograde rotation

Back 4

Spins in a clockwise direction

Front 5

Gas giants

Back 5

Large planets that don't have any known solid surface

Front 6

Satellites

Back 6

Natural or artificial bodies that revolve around larger bodies like planets

Front 7

Phases

Back 7

The different appearances of the moon due to its changing positions

Front 8

Eclipse

Back 8

Occurs when the shadow of one of the celestial bodies falls on another

Front 9

Comet

Back 9

A small body of ice, rock, and cosmic dust loosely packed together

Front 10

Asteroids

Back 10

Small, rocky bodies in orbit around the sun

Front 11

Asteroid belt

Back 11

A wide region between the orbits of Mars and Jupiter

Front 12

Meteoroid

Back 12

Small, rocky body orbiting the sun

Front 13

Meteorite

Back 13

A meteoroid that enters earth's atmosphere and hits the ground

Front 14

Meteor

Back 14

A bright streak of light caused by a meteoroid or comet Dust burning up in the atmosphere

Front 15

Venus is the

Back 15

The hottest planet

Front 16

Jupiter is the

Back 16

The largest planet

Front 17

Mercury and Venus don't have

Back 17

Don't have moons

Front 18

Venus and Uranus have

Back 18

Have retrograde rotation

Front 19

Mercury has the

Back 19

Biggest extreme in temperatures

Front 20

A comet moves fastest when it is

Back 20

Closest to the sun

Front 21

Most comets form in the

Back 21

Oort cloud

Front 22

The clouds on Venus

Back 22

Are made of sulfuric acid

Front 23

Jupiter's great red spot

Back 23

A giant storm

Front 24

Largest volcano in the solar system

Back 24

Olympus mons

Front 25

The asteroid belt is between

Back 25

Mars and Jupiter

Front 26

The tail of a comet faces

Back 26

Away From the sun

Front 27

The moons pireod of rotation equals

Back 27

Its period of revolution

Front 28

Planets or moons without an atmosphere will probably have

Back 28

Craters

Front 29

4 largest moons of Jupiter

Back 29

Ganymede

Callisto

Io

Europa

Front 30

8 phases of the moon

Back 30

New moon

Waxing crescent

First Quarter

Waxing gibbous

Full moon

Waning gibbous

Last quarter

Waning crescent

Then back to new moon

Hint 30

Front 31

Three characteristics of the inner planets

Back 31

Rocky

Small

Little if any moons

Front 32

Three characteristics of the outer planets

Back 32

Gassy

Large

Several moons