WBHS Rupe Rivers and Watersheds

What are the main agents of erosion?

• Wind

• Heat and Pressure

• Water

• Gravity

• Ice

True / False: Erosion is the breaking down of rock chemically or physically.

• True

• False

What percentage of water is not in the ocean? (hint: round up the number from your notes)

• 30%

• 3%

• 10%

• 20%

This cycle explains how water moves from one source to another. For example, lake water can evaporate into the atmosphere and then condense into cloud droplets.

A smaller stream that flows into a larger stream is called a _________________.

The land drained by a river system, including the main river and all of its tributaries. Pick 2 - these terms are synonymous.

• Drain Field

• Watershed

• Drainage Basin

• Slope Area

There are three factors that affect the rate of stream erosion. This one describes the amount of water flowing in a stream.

• Gradient

• Discharge

• Stream Load

This type of stream load is made up of the largest particles that roll along the bottom of the stream and may only move during flooding situations.

• Dissolved Load

• Suspended Load

• Bed Load

• None of these are correct.

A fan-shaped deposit of alluvium at the mouth of a river is called a ____________.

• sand bar

• delta

• pebble field

• shelf deposit

According to this map, the largest watershed in Virginia is the __________________________.

• Gulf of Mexico

• North Carolina Sounds

• Chesapeake Bay

• Mississippi River