27.3 Flashcards
what percentage of water on earth is salt water
97%
what percentage of earths water is freshwater
3%
where is the majority of the freshwater found
glaciers
where is the smaller percentage of fresh water found
lakes, rivers, and ground water
what is precipitation
rain, snow, sleet, and hail
what is run off
water runs of lands surface
what is infiltration
water becoming ground water
what is transpiration
when plants release water vapor into the atmosphere
what is evaporation
when water enters the atmosphere as water vapor
what is condensation
water vapor condenses into water droplets
what is the water cycle
water moves from the earths surface, to the atmosphere, and back to the surfac3e
what is an unsaturated zone for groundwater storage
a porus area where water passes through
what is a saturated zone for ground water storage
beneath the unstaurated zone, where water completely fills with water
what is a water table
the upper boundary of the saturated zone
what does it mean if sediment is permeable
it allows water to pass, less permeable means less water will pass, and vice versa
what is an aquifer
a rock iunit can transfer water through pore space
what is the name of the great plains aquifer run through
ogallala aquifer
how many states does he great plains aquifer run through
8 states
what are the names of the states that the great plains aquifer runs through
south Dakota, Wyoming, Nebraska, Colorado, Kansas, Oklahoma, new mexico, and Texas
what is an aquitard
keep water from passing
how are springs formed
where the water table naturally meets the earths surfaceq
what is an artesian well
when you drill into a pressurized aquifer
what is a cone of depression
water flows down towards a well
Absolute dating
the procces of assigning an exact numerical age to an organism, an object, or an event
Relative dating
the process of placing objects or events in their proper order in time
uniformitarism
States that the laws of nature operate today as they have in the past
principle of superposition
states that in an undisturbed sequence of sedimentary rock layers, the youngest rock will be at the top and the oldest layer of rocks will be at the bottom
unconformity
gaps in the rock record during which either erosion occurred or deposition was absent
fossil
the remains or traces of organisms found in the geological rock record
