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Landforms
| Question | Answer |
|---|---|
| What is the continental shelf? | The part of the continent located under the water.The width of the continental shelf varies around the edges of the continents. In some places the continental shelf is fairly shallow and in other place it becomes very deep, but it is not the deepest part of the ocean. |
| What is the continental slope | where the continental shelf drops to the bottom of the ocean floor. The depth of the ocean water increases greatly here |
| What is the abyssal plain? | Flat or gently sloping, smooth area of the ocean floor |
| What is the Mid-ocean ridge? | a central ridge, or mountain range, that divides the ocean floor into two parts. It is made up of underwater volcanic mountains |
| What are seamounts? | Volcanic mountains not formed on the mid-ocean ridge |
| What is the Rift Zone? | A narrow trench in the center of the highest part of the mid-ocean ridge. It is here that underwater volcanic activity adds mountains to either side of the mid-ocean ridge |
| What is a trench? | steep-sided canyons and deep, narrow valleys in the bottom of the ocean. Ocean trenches are the deepest part of the ocean basin and are deeper than any valley found on land. |
| Ocean Basin | Located on either side of the mid-ocean ridge is the ocean basin. It is made up of low hills and flat plains. |
| Weathering | The proces by which rock is weakened or broken down by water, wind or ice. |
| Erosion | The process by which rock weathered rock is carried away by wind, water, ice, and gravity |
| Deposition | The depositing of eroded sediment and rock iinto one location. |
| What landforms are created by deposition? | Deltas and dunes |
| Deltas | A fan shaped landform found at the mouth of a river . It is made up of deposited eroded rock and debris. |
| What type of landform does erosion create? | A canyon and valley |
| What we'll known landform did erosion create? | The Grand Canyon |
| Constructive Forces | Those that Create landforms. They change the surface of the earth by BUILDING IT UP |
| Destructive Forces | Those that Destroy landforms. They changed the surface of the earth by WEARING IT DOWN |
| Earthquakes | are vibrations on Earth's surface caused by sudden movement along a fault, a break in Earth's surface |
| Floods | occur when a large amount of water covers land that is usually dry. |
| Volcanic Eruptions | Are mountains with openings in Earth's crust through which magma, gases, and ash reach Earth's surface. |
| How is deposition a constructive force? | it builds, deltas and sand dunes |
| How are volcanic eruptions constructive? | they create mountains, seamounts, and islands |
| How are earthquakes constructive? | they creates mountains and valleys |
| How are floods constructive? | they build flood plains and levees |
| How is erosion constructive? | it can form canyons |
| How are earthquakes destructive? | they can causes tsunamis and landslides |
| How are volcanic eruptions destructive? | destroy forests and fields and change weather patterns |
| What is chemical weathering? | The process of breaking down rock by weakening from the inside out (weakening the bonds that hold the rock together). |
| What is physical/mechanical weathering? | The process of breaking down rock by plants and ice. |
| Valley | A V-shaped landform formed by the effects of running water |
| Canyons | This landform has steep walls and is formed by erosion and weathering of rock caused by the movement of water in rivers |
| watershed | all of the land that water flows over or through before reaching the ocean, lake, or river |
| tributaries | streams or rivers that flow into a larger river. It does not flow into the ocean. |
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AMESAcademy
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