Resistance of a smooth surface of a mineral to being scratched.
Hardness
Fastest type of mass wasting.
Mudflow
Eroded rock fragments are eventually set down in a new location through the process of ____.
Deposition
Large icicle-like structures "growing" from the ceilings of caves.
Stalactites
Most abundant metal in the earth's crust.
Aluminum
Consists of a relatively large stream and any smaller streams that flow into it.
Drainage System
This type of coal gives off an offensive odor and is the poorest quality.
Lignite
Imitation gemstones: these look like natural gemstones but have a different chemical composition.
Simulant Gemstones
Most important effect of wind erosion.
Deflation
The branch of geology that is concerned with the origin, composition, and structure of rocks.
Petrology
Material carried by a stream is its ___.
Load
These storms only occur in areas experiencing drought.
Dust Storms
Arch-shaped dunes where the open end of the arch points towards the winward side instead of the leeward side.
Parabolic Dunes
When a large river reaches the ocean, it deposits sediment, often forming a ___.
Delta
Vast sheets of glacial ice that cover immense areas of relatively flat land.
Continental Glaciers
These glaciers can be thought of as rivers of ice that slowly flow down from mountainous regions.
Valley Glaciers
These dunes resemble swells or ocean waves.
Transverse Dunes
Most widespread form of mass wasting.
Soil Creep
Eroding action of windblown sand.
Abrasion
Type of landslide that involves rock fragments and other loose materials found in coarse soil.
Debris Slide