Rocks and Weathering

Question 0

Erosion

Answer 0

The process by which water, ice, wind, or gravity moves weathered rock and soil.

Question 1

Weathering

Answer 1

The chemical and physical processes that break down rock at Earth’s surface.

Question 2

Uniformitarianism

Answer 2

The geologic principle that the same geologic processes that operate today operated in the past to change Earth’s surface

Question 3

Mechanical Weathering

Answer 3

The type of weathering in which rock is physically broken into smaller pieces.

Question 4

Abrasion

Answer 4

The grinding away of rock by other rock particles carried in water, ice, or wind.

Question 5

Ice Wedging

Answer 5

Process that splits rock when water seeps into cracks, then freezes and expands.

Question 6

Chemical Weathering

Answer 6

The process that breaks down rock through chemical changes.

Question 7

Oxidation

Answer 7

A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust.

Question 8

Permeable

Answer 8

Characteristic of a material that is full of tiny, connected air spaces that water can seep through.