Water on Earth flashcards

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What is meant by “Evaporation” in this lesson?The water cycle: Evaporation changes liquid water into vapor through energy transfer.
What is meant by “Condensation” in this lesson?The water cycle: Condensation changes water vapor into liquid droplets when conditions favor saturation.
What is meant by “Precipitation” in this lesson?The water cycle: Precipitation is water falling from the atmosphere as rain, snow, or other forms.
What is meant by “Infiltration” in this lesson?The water cycle: Infiltration is water entering the ground from the surface.
What is meant by “Runoff” in this lesson?The water cycle: Runoff is water flowing over the land surface toward drainage channels.
What is meant by “Transpiration” in this lesson?The water cycle: Transpiration transfers water vapor from plants to the atmosphere.
What is meant by “Aquifer” in this lesson?Groundwater: An aquifer is a saturated geological unit that can transmit useful quantities of groundwater.
What is meant by “Porosity” in this lesson?Groundwater: Porosity is the fraction of a material's volume occupied by pore spaces.
What is meant by “Permeability” in this lesson?Groundwater: Permeability describes how readily connected pathways transmit fluids.
What is meant by “Water table” in this lesson?Groundwater: The water table is the upper surface of an unconfined saturated zone.
What is meant by “Recharge” in this lesson?Groundwater: Recharge adds water to a groundwater system.
What is meant by “Groundwater depletion” in this lesson?Groundwater: Depletion occurs when withdrawals persistently exceed replenishment and stored water declines.
What is meant by “Salinity” in this lesson?Oceans and currents: Salinity measures dissolved salt content in water.
What is meant by “Surface current” in this lesson?Oceans and currents: A surface current is an ocean flow strongly influenced by winds and Earth's rotation.
What is meant by “Density-driven circulation” in this lesson?Oceans and currents: Differences related to temperature and salinity help drive deeper ocean circulation.
What is meant by “Upwelling” in this lesson?Oceans and currents: Upwelling brings deeper water toward the surface and can supply nutrients.
What is meant by “Ocean heat storage” in this lesson?Oceans and currents: Water's large heat capacity allows oceans to store and transport substantial thermal energy.
What is meant by “Tide” in this lesson?Oceans and currents: Tides are repeated sea-level variations driven mainly by lunar and solar gravity and modified by basin geometry.