A
abrasion
absolute age
absolute zero
absorption
abundant
acid rain
acid test (for carbonate)
actual evapotranspiration
adiabatic temp. change
aerosol
agents (of erosion)
air mass
air pressure
albedo
alignment (of minerals)
alluvial fan
alpine glacier
altitude (of Sun or star)
amorphous
amplitude
analogy
anemometer
aneroid barometer
angle of insolation
annular eclipse
Antarctic
Antarctic circle
anticline
anticyclone
aphelion
apogee
apparent motion
apparent diameter
aquifer
arbitrary
arctic
arctic air mass
arctic circle
arete
arid
ascending
asteroid
asteroid belt
asthenosphere
(AU) astronomical unit
atmosphere
atm

autumnal equinox
   
B

banding (of minerals)
barometer
barometric pressure
barrier island
basaltic crust
bedrock
Big Bang
bioclastic
biological carbon
black hole
blue giant
blue shift

buried erosional surface
    C
capacity
capillarity
carbon 14
carbon dating
carbon dioxide
carbonate
carbonation
carbonic acid
celestial object
celestial sphere
cementation
chemical weathering
chemically formed
chlorofluorocarbons
chronological (order)
circle
cirque
classification
clastic
cleavage
climate
closed (energy) system
cloud
CO2
coarse (texture)
collision (of molecules)
cold front
colloid
color (of a star)
comet
compaction
compression wave
conchoidal
condensation
conduction
constellation
contact metamorphism
continental air mass

continental crust
continental drift
continental glacier
continental plate
contour interval
convection
converge (convergence)
convergent boundaries
coordinate system
core
Coriolis effect
correlation
contour line
crest
cross-bedding
crust
crystal (crystalline)
current
cutting tools (of a stream)
cyclic change (event)
cyclone
    D
decay
descending
deficit
delta
density
depletion
deposition
desert
deviation
dew point
direct relationship
direct rays (of the Sun)
discharge (stream)
dissolve
displacement
distortion (of structure)
diverge
divergent boundaries
dominant
Doppler effect (shift)
drainage pattern
drought
drumlin
dry bulb thermometer
duration

duration of insolation
dyke
dynamic equilibrium

    E
earthquake
eccentricity
eclipse
electromagnetic energy
element
ellipse
energy sink
energy source
epicenter
equator
equilibrium
equinox
erosion
erratic
error
evaporation (evaporate)
evaporite
evapotranspiration
extrusive

    F
faulting
felsic
field (field value)
fine (texture)
focal depth
focus (of an earthquake)
focus (of an ellipse)
fog
folding
foliation
fossil
fossil fuels
Foucault pendulum
fracture
fragmental
frame of reference
freeze
frequency (of a wave)
front
frost wedging (action)
fusion (hydrogen)

    G
galaxy
geocentric model
glacier
glassy (texture)
gradient
granitic crust
gravity
greenhouse effect
grooves (in rock)
ground water (storage)

    H
hachure lines
hail
half-life
hardness
heat
heat budget
heliocentric model
highland
high pressure system
horizon
hot spot
humid (climate)
hydration
hydrologic (water) cycle
hydrosphere

     I
ice wedging
igneous
impermeable
inches (Hg)
index fossil
inference
infiltration
infrared (IR)
inner core
inorganic
insolation
instruments (scientific)
intensity (of insolation)
interface
intergrown crystals
interval
intrusive
inverse relationship
isobar
isoline
isostasy
isotherm
isotope

     J
jet stream
joule
Jovian

    K
kettle lake
kinetic energy
knot

    L
land-derived
landscape
lateral moraine
latitude
lava
leeward
leveling forces
light year
lithosphere
load (of a stream)
longitude
lowland
low pressure system
luminosity
lunar eclipse
lunar phases
luster

    M
mafic
magma
magnitude
main sequence
major axis
mantle
map symbol
maritime airmass
mass
meander
medial moraine
melt
Mercalli scale
mercury barometer
meridian
mesopause
mesosphere
meteor
meteorite
meteoroid
metallic (luster)
metamorphic (rock)
metamorphism
methane
mid-ocean ridge
Milky Way Galaxy
millibar
mineral
mineral alignment
model
modified Mercalli scale

MOHO
Mohorovicic discontinuity
Moh's Scale
monominerallic
moon phases
moon
moraine
mountain

    N
natural gas
neap tide
nebula
non-cyclic change (event)
non-metallic luster
non-vesicular
North Star
nuclear fusion

    O
oblate spheroid
observation
occluded front
oceanic crust
oceanic plate
Oort cloud
open (energy) system
orbital velocity
organic (organically formed)
original horizontality
orogeny
orographic effect
outcrop
outer core
outwash plain
overturning
oxbow lake
oxidation
ozone (layer)

    P
paleomagnetism
Pangaea
parallel grooves
penumbra
perigee
perihelion
permeability
permeable
petrified
phase change
phase of matter
phases (of the moon)
physical weathering
pitted (rock) surface
plain
planet
plateau
plate tectonics
plutonic
polar air mass
Polaris
polished (rock)
pollution (pollutant)
polymineralic
pore
porosity
porous
porphyry (porphyritic texture)
potential energy
potential evapotranspiration

precipitation
precipitate
predominant
pressure (atmospheric)
pressure gradient
prevailing (winds)
primary (P) waves
prime meridian
profile
psychrometer
P-wave

    R
radial stream drainage pattern
radiative balance
radioactive dating
radioactive decay
rain shadow
rate (change of)
rate of infiltration
recede
recharge
recrystallization
red giant
red shift
reflection
refraction
regional metamorphism
regolith
relative age
relative humidity
relief
residual soil
resistance
retrograde motion
revolution
Richter scale
rock cycle
rock resistance
root wedging
rotation
runoff

    S
saltation
sandblasting
saturated
saturation zone
scalar quantity
scratch test
scratched (and polished rock)
sea-floor spreading
secondary (S) wave
sediment
sedimentary rock
seismic wave
seismogram
seismograph
semiarid (climate)
shadow zone
silicate
silicon-oxygen tetrahedron
sill
sink (energy)
sleet
slightly eccentric ellipse
sling psychrometer
slope
snow
soil horizon
soil (moisture) storage
solar eclipse

solar noon
solar system
solar wind
solidification
solstice
soluble
solution
sorted (sorting)
source (energy)
specific heat
spectrum
sphere
spring tide
stalactite
stalagmite
star
star trails
states of matter
static (equilibrium)
stationary front
station model
stiffer mantle
storm track
strata (stratum)
stratopause
stratosphere
streak (test)
stream abrasion
stream discharge

stream drainage pattern
striations
subduction (zone)
subhumid (climate)
sublimation
summer solstice
supernova
superposition
surface area
surplus
suspension
S-wave
syncline

    T
tectonic plate
temperature
terminal moraine
terrestrial
terrestrial radiation
tetrahedron
texture
thermometer
thermosphere
till
tilting
topographic map
total (solar) eclipse
transform boundaries
transpiration
transport
transported soil
transverse wave
trench
trend
Tropic of Cancer
Tropic of Capricorn
tropical air mass
tropopause
troposphere
trough
tsunami

    U
ultraviolet radiation (UV)
umbra
unconformity
uniformitarianism
universe
unsaturated
unsorted
uplift
usage
U-shaped valley

    V
vaporization (vaporize)
vector value
velocity
veneer
vernal
vernal equinox
vesicular
visible spectrum (light)
volcanic
volcano
volume
V-shaped valley

    W
walking the outcrop
waning
warm front
water cycle
water retained
water table
water vapor
watershed
wavelength
waxing
weather
weathering
weight
wet-bulb depression
wet-bulb thermometer
white dwarf
wind abrasion
windward

winter solstice
    Z
zenith
zone of aeration
zone of saturation