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Science flashcards
| Question | Answer |
|---|---|
| What is a headland? | A part of shore that sticks out into the ocean and is made of harder rock that resists the force of waves |
| What is till? | The mixture of sediments that a glacier deposits directly on the surface. It's made up of particles of many different sizes. Clay, silt, sand, gravel, and boulders can all be found in till. |
| What can glacial erosion form? | Arete, horns, cirques, and glacial lakes. |
| What can wave erosion form? | Wave erosion can form sea caves, sea arches, sea stacks, and wave cut cliffs. |
| What is the difference between a sand dune and a loess? | A sand dune is made of coarser sediment and a loess is made from finer sediment. The textures are different. Sand dune texture is rough and loess texture is soft. |
| What is a creep? | The very slow downhill movement of rock and soil. Often results from freezing and thawing. |
| What is a slump? | A mass of rock and soil suddenly slips down a slope. The material from a slump moves down in one large mass. |
| What is a mudslide? | Rapid downhill movement of a mixture of rock, water, and soil. Happens if an area is very dry and gets a heavy rainfall or from earthquakes |
| What is a landslide? | Landslides are the most destructive type of mass movement. Happens when rock and soil quickly slide down a steep slope. |
| What is the material moved by erosion? | Sediment |
| What is deposition? | Deposition occurs where the agents of erosion lay down sediment. Deposition changes the shape of the land. |
| What is the major agent that has shaped Earth’s surface? | Water |
| What is a glacier? | A glacier is any large mass of ice that moves slowly over land. There are two main types of glaciers. |
| What is a valley glacier? | A valley glacier is a glacier that forms when snow and ice build up high in a mountain valley. |
| What is a continental glacier? | A continental glacier is a glacier that covers most of a continent or island. |
| What is plucking? | Is when a glacier picks up rocks as it moves over earth’s surface. |
| What is abrasion? | Rocks that are stuck in the glacier gouge and scratch the rock beneath it. |
| What is a moraine? | A moraine is the till deposited at the edge of a glacier. |
| What is a drumlin? | A long mound of till that is shaped in the direction of the glacier’s flow. |
| What is a kettle lake? | A kettle lake is a small depression that forms when a chunk of ice is left in glacial till. |
| What is loess? | The finer sediment. Includes particles of lcay and silt. Are sometimes deposited in layerfar from their source. The texture is soft. |
| Explain what a delta is. | Where a river flows into the ocean, the river deposits sediment, forming a delta. |
| Explain what a tributary lake is. | A river receives water and sediment from a tributary- a smaller river or stream that flows into it. |
| Explain what an oxbow lake is. | A meander cut off from a river by deposition of sediment. |
| Explain what a meander is. | Where a river flows across easily eroded sediment, its channel bends from side to side in a series of meanders. |
| Explain what a waterfall is | Waterfalls and rapids are common where the river passes over harder rock. |
| What is a v-shaped valley? | Near its source, a river often flows through a deep, v-shaped valley. As the river flows, it cuts a deeper valley. |
| What is a flood plain? | A flood plain forms when a river's power of erosion widens its valley rather than deepening it. |
| What is a stalactite? | A stalactite is a deposit that hangs like an icicle from the roof of a cave. |
| What is a stalagmite? | A stalagmite is in the shape of a cone that sticks up from a cave floor. |
Created by:
16achaturvedi
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