Earth History
This isotopic pair can only be used to date prior living objects.
What is Carbon-14/Nitrogen-14?
Crust, mantle and core are used to describe this aspect of the Earth's structure.
What are the compositional or chemical layers?
This is the process of breaking down rocks and minerals without changing their chemical composition.
What is mechanical weathering?
The solstices occur when one of the poles is most directly pointed at the sun. In the northern hemisphere the summer solstices occurs on this date.
What is June 21?
This human activity is responsible for the majority of water use in the Colorado River Basin.
What is irrigation?
This organism changed Earth's atmosphere by doing photosynthesis.
What is cyanobacteria?
This layer encompasses the crust and part of the upper mantle.
What is the lithosphere?
This is the process of changing water vapor to a liquid and forms clouds.
What is condensation?
This feature is used to determine how much sunlight a region receives.
What is latitude?
As _________________ increases, the sustainability of the Colorado River decreases.
What is population?
This is a term used to describe the original radioactive atoms undergoing decay.
What is parent atom?
Folded, uplifted mountains are formed by this type of plate tectonic interaction.
What is a convergent boundary?
This property of water can cool cities in the summer and warm them in the winter.
What is heat capacity?
As you move away from the equator, less sunlight is received. Average temperatures begin to...
What is decrease?
This naturally occurring hazard happens when evaporation exceeds precipitation.
What is drought?
These are the broadest divisions of geologic time.
What are eons?
Subduction trenches and volcanic island arcs are found at this type of plate boundary interaction.
What is a oceanic-oceanic convergent boundary.
This process takes water from plants and changes it into water vapor, moving it to the atmosphere.
What is transpiration?
As the Earth spins on its axis, winds and ocean currents curve. In the Northern Hemisphere, everything curves to the right. This is known as..
What is the Coriolis Effect?
This phenomenon has shifted normal precipitation patterns and shortened the cold season.
What is climate change?
This term is used to describe the time it takes for 50% of parent atoms to become daughter atoms.
What is half-life?
This seismic waves travels through all mediums and reaches seismic stations first?
What are P-Waves?
This type of bond is formed between water molecules and involves opposite charges.
What is a hydrogen bond?
These absorb outgoing infrared radiation, helping to keep the planet warm.
What are greenhouse gases?
As soil dries out, it becomes less able to support vegetation, increasing the rate of _______________.
What is aridification?