Unit 2 Lesson 1 Review

Why do some streams and rivers cause MORE erosion than others?

• Some streams have a steeper gradient, a larger load, and/or a greater discharge
• Some streams have a gentle gradient, a smaller load, and/or a smaller discharge

At which point does erosion occur?

• At A, which is called a point bar
• At A, which is called a cut bank
• At B, which is called a point bar
• At B, which is called a cut bank

At which point does deposition occur?

• At A, which is called a point bar
• At A, which is called a cut bank
• At B, which is called a point bar
• At B, which is called a cut bank

How does groundwater cause caves to form?

• Groundwater can dissolve and carry rock away
• Groundwater deposits sediment below a cave
• Groundwater creates alluvial fans
• Groundwater can create ocean waves near a cave

_______________________ occurs when materials drop out of wind or water. 

• Erosion
• Deposition

When a river flows into an ocean, it slows down and deposits materials in its _______________________.

• alluvial fan
• delta

When a river periodically floods and deposits its sediments, a flat area known as a _______________________ forms over time. 

• floodplain
• shoreline

How does a canyon form?

• Ground water erodes a cave.  Water level drops, and the cave's roof collapses. 
• A river erodes materials from its banks. 
• Waves erode and widen a crack in a sea cliff or headland. 

How does a sinkhole form?

• Ground water erodes a cave.  Water level drops, and the cave's roof collapses. 
• A river erodes materials from its banks. 
• Waves erode and widen a crack in a sea cliff or headland. 

How does a sea cave form?

• Ground water erodes a cave.  Water level drops, and the cave's roof collapses. 
• A river erodes materials from its banks. 
• Waves erode and widen a crack in a sea cliff or headland.