Chapter 27.3 and 27.4 Flashcards
The process by which water enters Earth and becomes groundwater below the surface
Infiltration
The upper boundary of the saturated zone is called
Water table
A rock unit that can transfer water through its pore space is called
Aquifer
The percentage of the material’s total volume that is a pore space
Porosity
The process of assigning an exact numerical age to an organism, an object, or an event
Absolute dating
The process of placing objects or events in their proper order in time
Relative dating
States that the laws nature operate today as they have in the past
Uniformitarianism
In an undisturbed sequence of a sedimentary rock layers, the youngest rocks will be at the top and the oldest rocks will be at the bottom
Principle of Superposition
Gaps in the rock record was absent
Unconformity
The remains or traces of organisms found in the geologic rock record are called
Fossil
What % of water on Earth is salt water?
97%
What % of water on Earth is freshwater?
3%
Where is the majority of freshwater found?
It is mostly found in glaciers
Where is the smaller % of freshwater found?
Lakes, rivers, and stored as ground water
What is precipitation?
When water vapor in the air cools and condenses
Ex, rain, snow, sleet, and hail