This is the most common and widespread form of precipitation.
What is rain?
100
This refers to the large amount of volcanoes located around the Pacific Ocean.
What is the Ring of Fire?
100
This is the detachment and removal of fragmented rock material.
What is erosion?
100
A large, recognizable assemblage of plants and animals in a functional interaction with its environment.
What is a biome?
100
The Nile is an example of this type of river.
What is an exotic river?
200
These clouds are named from the Latin word meaning "a lock of hair." They are thin, wispy and composed of ice crystals.
What are cirrus clouds?
200
This is another term for a seismic sea wave.
What is a tsunami?
200
In the system of stream orders, this is the smallest unit in the network.
What is 1st Order?
200
The transitional zone between biotic communities in which the typical species of one community intermingle with those of another.
What is an ecotone?
200
This is the single most important agent of landscape formation in deserts.
What is water?
300
These clouds are named from the Latin word meaning "spread out." They appear as grayish sheets that cover most of the sky and are rarely broken up into individual cloud units.
What are stratus clouds?
300
This is the widest type of volcano.
What is shield volcano?
300
This drainage pattern looks like the veins on the underside of a leaf.
What is dendritic?
300
Organisms that are introduced into "new" habitats in which they did not naturally occur.
What are exotic species?
300
These processes refer to those involving wind.
What are aeolian processes?
400
This is the term used to describe air which resists vertical movement.
What is stable?
400
This is a location where two lithospheric plates collide.
What is a convergent plate boundary?
400
A cutoff meander that initially holds water.
What is an oxbow lake?
400
This is the zoogeographic region with the most distinct flora and fauna.
What is the Australian Region?
400
A crescent-shaped sand dune with cusps of the crescent pointing downwind.
What is a barchan?
500
These clouds are most likely to produce thunderstorms.
What are cumulonimbus clouds?
500
This is a fault-produced valley resulting from spreading or rifting of a continent.
What is a continental rift valley?
500
The drainage pattern common in ridge and valley landscapes.
What is trellis?
500
Plants with this type of adaptation are structurally adapted to withstand protracted dry conditions.
What is xerophytic?
500
This is the term for a large area covered with loose sand, generally arranged in some sort of dune formation of by the wind.