This collection presents 81 Earth science words that start with W, spanning from “Wad” to “Wulfenite”. They cover features, processes, rocks, minerals, and climate terms used in classrooms, fieldwork, and public communication.

Earth science words that start with W are terms used to name landforms, materials, processes, and measurements in Earth science. Many come from Old English, Greek, or Latin, and include familiar examples like “watershed” and minerals such as “wulfenite”.

Below you’ll find the table with [COLUMN_NAMES].

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Earth science words that start with W

Term Category Typical units/scale Related concepts Description
Weather meteorology °C, hPa, mm, km temperature, precipitation, wind, humidity The short-term state of the atmosphere at a place, describing temperature, humidity, wind, and precipitation that people experience day to day.
Weathering geomorphology mm/yr to m/ky chemical weathering, physical weathering, soil, regolith Breakdown of rock at Earth’s surface by physical, chemical, or biological processes that produces soil and loose sediment.
Warm front meteorology km, °C, hPa cold front, occluded front, frontal lifting A boundary where warmer air advances over cooler air, typically causing gradual cloudiness and sustained precipitation.
Westerlies meteorology m/s, km/h, degrees latitude trade winds, jet stream, mid-latitude circulation Prevailing mid-latitude winds that blow from the west and help drive weather systems and ocean currents.
Water hydrology m^3, L, % hydrosphere, precipitation, groundwater, oceans The H2O molecule and Earth’s liquid reservoirs — oceans, lakes, rivers, ice, and groundwater — essential for climate and life.
Water cycle hydrology days to millennia evaporation, precipitation, runoff, infiltration Movement of water between atmosphere, oceans, land, and groundwater through evaporation, condensation, precipitation, and flow.
Water table hydrogeology m below land surface aquifer, saturated zone, vadose zone Upper surface of the groundwater where soil pores are fully saturated; depth varies with season and pumping.
Watershed hydrology km^2, drainage area drainage basin, catchment, runoff, river network Land area that drains surface water to a common outlet such as a stream, lake, or reservoir.
Water vapor atmospheric science g/m^3, %RH, hPa (vapor pressure) humidity, condensation, cloud formation, greenhouse gas Gaseous phase of water in the atmosphere that controls humidity, clouds, and latent heat transfer.
Water mass oceanography °C, psu (salinity), kg/m^3 thermocline, currents, mixing A large body of seawater with distinct temperature and salinity that influences ocean circulation.
Water column oceanography m depth stratification, thermocline, primary productivity Vertical section of a water body from surface to bottom used to study physical, chemical, and biological properties.
Water quality environmental science mg/L, pH, NTU nutrients, contaminants, dissolved oxygen, turbidity Measures of the chemical, physical, and biological conditions of water relevant to health and ecosystems.
Water hardness hydrology mg/L as CaCO3 calcium, magnesium, scale, water treatment Concentration of calcium and magnesium ions in water that affects plumbing, soap use, and scaling.
Waterlogging soil science % saturation, cm depth, days saturated soils, drainage, hypoxia Condition in which soil pores are filled with water, reducing oxygen and harming plant roots and microbes.
Waterspout meteorology m diameter, m/s wind tornado, funnel cloud, convection Rotating column of air over water connected to a cloud; can be tornadic (strong) or fair-weather (weaker).
Waterfall geomorphology m height plunge pool, knickpoint, erosion Steep drop in a river’s course where water falls vertically, often eroding a plunge pool and retreating upstream.
Well hydrogeology m depth, L/s yield aquifer, pumping, well log Engineered hole drilled to access groundwater for extraction, monitoring, or injection.
Well log geology m depth, counts/units borehole, stratigraphy, geophysical measurements Record of subsurface properties measured down a borehole to identify rock layers and fluids.
Wet-bulb temperature meteorology °C humidity, evaporative cooling, heat stress Temperature measured by a thermometer covered in wet cloth; indicates cooling potential by evaporation and human heat stress risk.
Wetland ecology/hydrology ha, m water depth marsh, swamp, bog, peat Area saturated long enough to support water-loving vegetation and anaerobic soils, important for biodiversity and flood control.
Wicking soil science mm to cm capillary rise capillary action, plant roots, soil moisture Upward movement of water through soil pores by capillary forces that supplies moisture to plants above the water table.
Wind meteorology m/s, km/h pressure gradient, Coriolis force, gusts Movement of air across Earth’s surface driven by pressure differences, shaped by rotation and surface friction.
Windward geomorphology/climatology n/a (directional) leeward, orographic lift, rain shadow Side or direction facing into the wind; windward slopes often receive more precipitation due to uplift and cooling of air.
Wind shear meteorology s^-1, m/s per km turbulence, convection, aviation hazards Change in wind speed or direction with height that affects storm development, turbulence, and flight safety.
Wind stress oceanography Pa surface forcing, Ekman transport, mixing Force per unit area exerted by wind on the ocean surface, driving currents and surface mixing.
Wind erosion geomorphology tons/ha/yr deflation, abrasion, dune formation Removal and transport of soil or sediment by wind, important in arid regions and dune development.
Winter monsoon climatology months, m/s winds monsoon, seasonal reversal, dry season Seasonal wind reversal bringing cool, dry air to some regions during winter, often altering precipitation patterns.
Wavelength physics/seismology/oceanography m, nm frequency, wave number, period Distance between successive crests of a wave; fundamental to describing seismic, ocean, and electromagnetic waves.
Wave oceanography/physics m height, s period swell, chop, tsunami, refraction Disturbance that transfers energy through water or rock without bulk transport of material; includes ocean and seismic waves.
Wave base oceanography m depth orbital motion, seabed, sediment transport Depth below which orbital motions of surface waves are negligible, typically about half a wave’s wavelength.
Wave refraction coastal geomorphology degrees, m shoreline, longshore drift, diffraction Bending of waves as they enter shallow water, focusing energy on headlands and affecting sediment distribution.
Wave period oceanography s frequency, wavelength, swell Time between successive wave crests passing a fixed point; controls energy and motion of waves.
Wave height oceanography m significant wave height, storm waves Vertical distance between a wave trough and crest; used to describe sea state and hazards.
Wave breaking coastal oceanography m depth, H/d ratio surf zone, turbulence, sediment transport When waves become too steep in shallow water and collapse, dissipating energy and producing surf.
Wave energy oceanography/renewables kW/m, J wave power, coastal impact, renewable energy Energy carried by ocean waves; considered for renewable power and influencing coastal erosion.
Wadati-Benioff zone seismology km depth subduction, deep earthquakes, slab Inclined zone of seismicity marking earthquakes along a subducting tectonic plate from the trench into the mantle.
Water budget hydrology mm/yr, m^3/s precipitation, evapotranspiration, runoff, storage Accounting of water inputs, outputs, and storage changes for a region over a set time period.
Weathering rind geomorphology cm to m saprolite, oxidation, rock alteration Altered outer layer on rock created by weathering processes that often differs in color and hardness from fresh rock.
Weather map meteorology isobars, fronts synoptic chart, pressure patterns, analyses Chart that shows atmospheric variables like pressure, fronts, and precipitation to analyze current weather conditions.
Weather radar meteorology dBZ Doppler, reflectivity, precipitation detection Instrument that uses radio waves to detect and measure precipitation intensity and wind motion within storms.
Weather station meteorology °C, hPa, mm, m/s climatology, instrumentation, surface observing Site equipped with instruments to record local atmospheric conditions for weather and climate records.
Weathering rate geomorphology mm/yr, cm/ky erosion, climate, rock type Speed at which rock and minerals break down at Earth’s surface, determined by environment and rock properties.
Water-rock interaction geochemistry pH, mg/L, °C dissolution, hydrothermal alteration, mineral precipitation Chemical reactions between water and minerals that change rock chemistry, produce secondary minerals, and control water quality.
Water table fluctuation hydrogeology m, time recharge, pumping, seasonal variation Changes in depth to the water table caused by recharge, extraction, or seasonal rainfall patterns.
Water retention soil science vol% (field capacity) porosity, wilting point, permeability Soil’s capacity to hold water for plant use, influenced by texture and organic matter.
Water isotopes paleoclimatology δ18O, δD ice cores, paleotemperature, fractionation Stable isotopic composition of water used to trace sources, processes, and past climate changes.
Weathering profile soil science/geology m depth regolith, saprolite, horizons Vertical sequence from fresh rock to soil showing degrees of weathering and horizon development.
Water harvesting hydrology L/m^2, mm runoff capture, storage, rainwater systems Techniques to collect and store rainfall or runoff for later use, often used in dryland agriculture.
Wave-dominated coast coastal geomorphology km shoreline tide-dominated coast, longshore drift, beaches Shoreline type shaped mainly by wave action rather than tidal processes, typically with well-developed beaches and sand transport.
Westerly wind burst meteorology/climatology m/s, days ENSO, convection, equatorial waves Short-lived strengthening of westerly winds near the equator that can influence ocean circulation and El Niño events.
Water deficit soil science/agronomy mm evapotranspiration, irrigation need, drought Amount by which available water falls short of crop or soil water demand, often guiding irrigation management.
Weathering front geochemistry cm to m oxidation front, reaction front, leaching Sharp boundary where fresh rock transitions to weathered material due to active chemical alteration.
Wavenumber geophysics/physics m^-1, cycles/km wavelength, frequency, spectral analysis Spatial frequency of a wave, the inverse of wavelength, used in spectral analysis of waves and seismic data.
Warm anomaly climatology/oceanography °C, area SST anomaly, heatwave, climate variability Regionally higher-than-average temperatures in atmosphere or oceans compared with a long-term baseline.
Warm pool oceanography °C, km^2 Pacific warm pool, convection, ENSO Large area of persistently warm sea-surface temperatures that fuels atmospheric convection and affects climate patterns.
Water footprint environmental science L/person/day virtual water, consumption, resource accounting Measure of freshwater used directly and indirectly to produce goods and services for a person, product, or region.
Wave run-up coastal engineering m surf zone, storm surge, beach slope Maximum vertical extent that waves travel up a shore above still-water level during breaking.
Wave dispersion oceanography s, m group velocity, wavelength, spectral spreading Variation in wave speed with wavelength, causing waves to separate into groups and spread energy.
Wind profiler meteorology m/s, altitude m radar, sodar, wind profile Remote instrument that measures wind speed and direction through a column of the atmosphere at multiple heights.
Wind rose meteorology/climatology % frequency, direction prevailing winds, climatology, plotting Circular diagram showing frequency of wind directions and speeds at a location over a period.
Wind gap geomorphology m elevation stream capture, drainage divide, notch A dry saddle or notch in a ridge left when a river is captured or diverted, indicating past drainage.
Wilson cycle tectonics 10–500 million years plate tectonics, ocean basin, continental rifting Long-term cycle of ocean basin opening and closing driven by plate motions, creating mountains and rifts.
Weir hydraulics/hydrology m^3/s, m head flow measurement, gauging, channel control Structure across a channel used to measure or control water flow and to manage upstream water levels.
Wall rock geology m thickness host rock, contact metamorphism, vein Rock surrounding a mineral deposit or intrusion; its composition and alteration affect ore formation and mining.
Wave-cut platform coastal geomorphology m width, m elevation sea cliff, erosional terrace, wave erosion Flat bench at the base of a sea cliff formed by wave erosion at former sea levels.
Wave spectrum oceanography Hz, m^2/Hz wave energy, fetch, spectral analysis Distribution of wave energy across frequencies used to describe sea states and predict coastal impacts.
Water temperature oceanography/hydrology °C SST, thermocline, heat content Temperature of a water body, influencing density, circulation, and ecosystem processes.
Water potential soil science/plant physiology kPa matric potential, osmotic potential, plant stress Energy state of water in soil or plants that controls movement of water toward roots and through tissues.
Water table gradient hydrogeology m/m hydraulic head, Darcy’s law, groundwater flow Change in hydraulic head per unit distance that drives direction and rate of groundwater flow.
Warm-core ring oceanography km diameter, °C anomaly mesoscale eddy, Gulf Stream, heat transport Mesoscale ocean eddy with warm water trapped in its core that influences local circulation and ecosystems.
Wrinkle ridge planetary geology m to km lunar tectonics, compression, mare basalts Low, sinuous ridge formed by compressional tectonics on planetary surfaces such as the Moon and Mars.
Wash geomorphology m width, m depth ephemeral stream, arroyo, wadi Dry stream channel in arid regions that carries water episodically during rainfall events.
Windthrow ecology/geomorphology trees m, area ha storms, blowdown, disturbance Uprooting or snapping of trees by strong winds, creating openings, changing soil exposure and erosion patterns.
Water chemistry geochemistry/hydrology mg/L, pH, µS/cm dissolved ions, redox, alkalinity Study of dissolved constituents and reactions in natural waters that affect water quality and aquatic life.
Wave setup coastal oceanography m run-up, storm surge, breaking waves Increase in mean water level at the shore caused by breaking waves pushing water toward land.
Wet deposition atmospheric chemistry kg/ha, mm dry deposition, acid rain, precipitation chemistry Removal of atmospheric pollutants by precipitation, transferring acids and nutrients from air to surface.
Wollastonite mineralogy mm–cm crystals skarn, metamorphic mineral, Ca silicate Calcium silicate mineral formed in metamorphic skarns, used industrially for ceramics and fillers.
Wulfenite mineralogy mm crystals oxidized ore zones, lead, molybdate Lead molybdate mineral forming thin tabular crystals, typically orange to reddish and found in oxidized portions of ore deposits.
Wolframite mineralogy mm crystals tungsten ore, hydrothermal veins, skarn Iron-manganese tungstate mineral and a major ore of tungsten, commonly found in hydrothermal deposits.
Wavellite mineralogy mm clusters phosphate minerals, botryoidal habit Hydrated aluminum phosphate mineral occurring as radiating or globular clusters in fractures and cavities.
Wad mineralogy n/a manganese oxides, ore, nodules Informal term for mixed manganese oxide and hydroxide minerals forming soft, dark earthy masses in deposits.

Descriptions

Weather
Weathering
Warm front
Westerlies
Water
Water cycle
Water table
Watershed
Water vapor
Water mass
Water column
Water quality
Water hardness
Waterlogging
Waterspout
Waterfall
Well
Well log
Wet-bulb temperature
Wetland
Wicking
Wind
Windward
Wind shear
Wind stress
Wind erosion
Winter monsoon
Wavelength
Wave
Wave base
Wave refraction
Wave period
Wave height
Wave breaking
Wave energy
Wadati-Benioff zone
Water budget
Weathering rind
Weather map
Weather radar
Weather station
Weathering rate
Water-rock interaction
Water table fluctuation
Water retention
Water isotopes
Weathering profile
Water harvesting
Wave-dominated coast
Westerly wind burst
Water deficit
Weathering front
Wavenumber
Warm anomaly
Warm pool
Water footprint
Wave run-up
Wave dispersion
Wind profiler
Wind rose
Wind gap
Wilson cycle
Weir
Wall rock
Wave-cut platform
Wave spectrum
Water temperature
Water potential
Water table gradient
Warm-core ring
Wrinkle ridge
Wash
Windthrow
Water chemistry
Wave setup
Wet deposition
Wollastonite
Wulfenite
Wolframite
Wavellite
Wad
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