ES Hmwk; Stream Erosion

Which agent probably contributes most to the general wearing down of Earth's surface?

• wind

• glaciers

• running water

• ocean waves and currents

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

The area drained by a river and its tributaries is called

• watershed

• mouth

• source

• divide

The increase of dissolved materials in the ocean is primarily the result of the

• abrasion of the ocean floor

• transporting of material by rivers

• melting of the continental glaciers

• deposition of materials by ground water

The velocity of a stream at a particular location is controlled mainly by the

• elevation of the stream at the location

• distance of location from the source

• slope of the stream channel at the location

• amount of sediments carried at the location

Tags

NGSS.MS-PS2-2

A pebble is being transported by a stream by rolling. How does the velocity of the pebble compare to the velocity of the stream?

• the pebble is moving more slowly than the stream

• the pebble is moving more quickly than the stream

• the pebble is moving at the same velocity as the stream

Which is the largest sediment type could be carried by a stream flowing at a velocity of 75 cm/second?

Which statement best describes stream with a steep gradient?

• it flow slowly, producing a V-shaped valley

• it flows slowly, producing a U-shaped valley

• it flows rapidly, producing a V-shaped valley

• it flows rapidly, producing a U-shaped valley

Which is the slowest stream velocity needed to maintain 1 cm particles moving downstream?

• 50 cm/sec

• 75 cm/sec

• 100 cm/sec

• 125 cm/sec

Which evidence best supports the idea that a vast inland sea once covered the Great Plains area of the United States?

• considerable erosion has occurred there

• extensive igneous intrusions are presently exposed

• extensive sedimentary rock layers have been formed there

• numerous earthquakes occur there

Tags

NGSS.MS-ESS2-3

When a river enters the ocean, sediment is deposited. Describe the change in kinetic energy of the river that leads up to this event.

Tags

NGSS.MS-PS3-1