CHAPTER 9 SEC.1-6

Chapter 9 Vocab.

RUNOFF-
something that drains or flows off, as rain that flows off from the land in streams.

Rill-
any of certain long, narrow, straight or sinuous trenches or valleys observed on the surface of the moon.

Gully-
a small valley or ravine originally worn away by running water and serving as a drainageway after prolonged heavy rains.

Stream-
a body of water flowing in a channel or watercourse, as a river, rivulet, or brook.

Tributary-
a stream that flows to a larger stream or other body of water.

Flood plain-
a nearly flat plain along the course of a stream or river that is naturally subject to flooding.

Oxbow lake-
a bow-shaped bend in a river, or the land embraced by it.

Alluvial fan-
a fan-shaped alluvial deposit formed by a stream where its velocity is abruptly decreased, as at the mouth of a ravine or at the foot of a mountain

Delta-
3. the flat alluvial area at the mouth of some rivers where the mainstream splits up into several distributaries: the Mississippi Delta

Groundwater-
the water beneath the surface of the ground, consisting largely of surface water that has seeped down: the source of water in springs and wells

Stalactite-
a deposit, usually of calcium carbonate, shaped like an icicle, hanging from the roof of a cave or the like, and formed by the dripping of percolating calcareous water.

Stalagmite-
a deposit, usually of calcium carbonate, more or less resembling an inverted stalactite, formed on the floor of a cave or the like by the dripping of percolating calcareous water.

Karst topography-

A landscape that is characterized by numerous caves, sinkholes, fissures, and underground streams. Karst topography usually forms in regions of plentiful rainfall where bedrock consists of carbonate-rich rock, such as limestone, gypsum, or dolomite, that is easily dissolved. Surface streams are usually absent from karst topography.

CHAPTER 9 SEC.1 FACTS

• Weathering, erosion, and deposition act together in a cycle that wears down and builds up earthed surface.
• The different types of mass movement include landslides, mudflows, slump, and creep.

SECTION 2 FACTS

• Moving water is the major agent of the erosion that has shaped earths land surface
• Through erosion a river creates valleys, waterfalls, floodplains, meanders and oxbow lake

Untitled Slide

Untitled Slide

SECTION 4 FACTS

• The two process by which glaciers erode the land are plucking and abrasion.
• There are two kinds of glaciers- continental and valley glaciers.

SECTION 5 FACTS

• The energy in waves comes from wind that blows across waters surface.
• Waves shape the coast through erosion by breaking down rock and transporting sand and other elements.

SECTION 6 FACTS

• Wind causes erosion by deflation and abrasion.
• Wind erosion and deposition may form sand dunes and loses deposits.