| A | B |
|---|
| Explain diff. b/t erosion and deposition | erosion is when weathered rock & soil particles move from one place to another. deposition is when sediments are laid in new locations |
| give 2 ex. of each erosion and deposition | erosion - landslide, mudflow deposition - sand dunes, earthflow |
| Explain how the five agents of erosion change the Earth's surface | Gravity - pulls down rocks and slopes Wind - loose material gets picked up and moved Running Water - carries sediments which can cause abrasian Glaciers - abrasian and plucking the rock beneath it Waves - shapes the shoreline |
| how does gravity help erosion on a mountain slope covered with rocks and soil | it pulls the rocks and soil down |
| at the bottom of a slope, huges sediment deposits orrur. they're known as | landslides |
| what is deflation | when wind removes loose materials such as clay, silt, and sand from the land |
| how does a sand dune form? | when particles of sand is deposited and the mounds of sand keep moving |
| why are windbreaks important | decreases wind erosion and aid in wind deposition protects plants |
| how does water erode sediment | sediments collide with rocks chipping away pieces of the rocks |
| what mode of erosion causes the most change in the Earth's surface? | running water |
| how does surface runoff form a stream | network of surface runoff form gullies --> rills --> streams |
| describe development of river system | runoff --> rills--> gullies --> streams --> rivers |
| alluvial fan | when a river leaves the mountains and slows down as it runs out onto a plain |
| meander | loop in a river |
| oxbow lake | formed when a meander is cut off from the rest of the river |
| delta | when large amts of sediments are deposited at the mouth of a large river that flows into a lake |
| levee | when particles are deposited along the sides of a river the larger particles accumulate to form levees |
| flood plain | after heavy rain, a river over flows and covers a flood plain |
| compare valley glacier to a continental glacier | valley glaciers are long, narrow glaciers that move downhill b/t steep sides of a mtn valley. continental glaciers are thicker sheets of ice. |
| till | rocks and debris deposited directly by a glacier |
| moraine | ridge of till left behind be a retreating glacier |
| drumlin | oveal shaped mound of glaciel till |
| meltwater | water from melting ice or snow |
| kettle lake | round, deep lake formed by a huge block of ice left by a glacier |
| outwash plain | flat fan shaped area in from of terminal moraines formed by sediments deposited by rivers of glaciel meltwater |
| glaciel terminus | the place where a glacier ends |
