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Weathering & Erosion

Grade 6 Science
Across
glaciers that form on the crests and slopes of mountains
A huge mass of ice that moves slowly over land
A really, really cold agent of erosion. . .Brrr
A crack in the ground formed by a narrow or thin piece of ice (2 words)
the downslope movement of a mass of surface materials
One important cause of chemical weathering (2 words)
A force that pulls every object toward every other object
Breaks rocks into smaller pieces without changing them chemically (2 words)
Continuous masses of ice; located in polar regions; cover about 10% of Earth, called ice sheets (2 words)
Any natural flow of water
One factor that can affect soil formation
Surface features
The erosion of the land by wind
A mixture of weathered rock, organic matter, water and air that supports the growth of plant life.
Plants produce this substance
Water flowing downhill as a thin sheet
Down
A shallow channel in some soil, created by the erosion of flowing water
One factor that can affect soil formation
The slowest of the four kinds of mass movement
Small organisms that consist of an alga and a fungus that live together for mutual benefit
This chemical can change the composition of minerals in rocks
Takes place more rapidly than mechanical weathering (2 words)
A mechanical or chemical surface process that breaks rocks into smaller pieces
A mass of ice that moves slowly over land; located in high mountains
A rill that gets large enough that it cannot be easily removed
When iron-containing materials are oxidized, a chemical reaction causes the material to _____.
One factor that can affect soil formation (2 words)
One important cause of chemical weathering (2 words)
This type of mass movement will leave a huge, jumbled pile of rocks at the bottom of the slope from rocks bouncing and breaking apart during the movement.
The wearing away and removal of rock or sediment
A type of animal that can weather a rock
A form of erosion that can make pits in rocks and produce smooth, polished surfaces
Water that flows over Earth's surface
When a mass of rock or sediment moves downhill, leaving a curved scar