Fossils Through Time
A timeline of the Earth's 4.6 billion year history.
Geological time scale
Created by the process of cooling magma.
Minerals/ores
A resource that is used faster than it is formed.
The rock layer that is the oldest.
The bottom layer
The consumption for each person in a country.
Per Capita Consumption
An explosion of life.
A form of weathering, both wind and water, that leaves features such as canyons.
Erosion
A metal that is used in electronics, wire, and alloys.
Copper
Sedimentary rock
Diamonds are formed from this element.
Carbon
Fossils provide this kind of dating/aging.
Relative dating/aging.
Geological processes result in the uneven distribution of this.
Natural resources.
A renewable resource that is the basis of all life forms, found in aquifers.
Groundwater
Sandstone is this kind of rock.
Sedimentary.
A desirable outcome given up to gain another desirable outcome.
Trade-off
A major event categorized by the death of 75% of the Earth's species.
Mass extinction
The movement of one tectonic plate under another.
Subduction
Rock that contains economically valuable concentrations of a metal or other minerals.
Ores
Scientists use this to organize the Earth's history.
Rock strata
The age of the Earth.
4.6 billion years old
Used by geologists to separate geological time periods.
Appearances and disappearances of fossils
The downward sinking or settling of the Earth's surface
Subsidence
A fossil fuel created by high pressure and temperatures under ancient oceans
Petroleum
A diagram representing a series of rock layers made by looking at the sides of cliffs or at drill cores.
Stratigraphic column.
Geological processes occur _______________ as they did in the past.
The same