Across
- 3. Triangular section of land built up at a river’s mouth.
- 4. lowlands and at the bottoms of valleys but also on plateaus or uplands at high elevations. In a valley, a plain is enclosed on two sides but in other cases a plain may be delineated by a complete or partial ring of hills, by mountains or cliffs.
- 6. a stream or river that flows into a larger stream or river main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean.
- 10. The bed of a stream, river, or other waterway.
- 13. A narrow passage that water flows through.
- 14. Ring-shaped island formed by coral buildup on the rim of an underwater volcano.
- 16. a common feature of a coastline. Beaches are made up of eroded material that has been transported from elsewhere and deposited by the sea. Constructive waves help to build up beaches. The material found on a beach (ie sand or shingle) depends on the geology of the area and wave energy.
- 18. a steep fall or flow of water in a watercourse from a height, as over a precipice; cascade.
- 19. a shallow body of water separated from a larger body of water by barrier islands or reefs. Lagoons are commonly divided into coastal lagoons and atoll lagoons.
- 20. A narrow strip of land, bordered on both sides by water, connecting two larger bodies of land.
- 22. A portion of an ocean or sea partly enclosed by land.
- 24. Long, wide body of water connecting larger bodies of water, larger than a channel.
- 25. A natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels.
Down
- 1. an extended mass of ice formed from snow falling and accumulating over the years and moving very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of accumulation, as in continental.
- 2. A body of water connected to an ocean or lake, formed by an indentation of the shoreline.
- 5. An archipelago is a group of islands closely scattered in a body of water. Usually, this body of water is the ocean, but it can also be a lake or river. Most archipelagoes are made of oceanic islands. This means the islands were formed by volcanoes erupting from the ocean floor.
- 7. A tract of low wet land, often treeless and periodically inundated, generally characterized by a growth of grasses, sedges, cattails, and rushes.
- 8. A land area having a relatively level surface considerably raised above adjoining land on at least one side, and often cut by deep canyons.
- 9. A wild land overgrown with dense vegetation, often nearly impenetrable, especially tropical vegetation or a tropical rain forest.
- 11. a hill of sand built by either wind or water flow. Dunes occur in different shapes and sizes, formed by interaction with the flow of air or water.
- 12. a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded by wind and water.
- 15. an area of variable size filled with water, localized in a basin, that is surrounded by land, apart from any river or other outlet that serves.
- 17. a headland or a promontory of large size extending into a body of water, usually the sea. A cape usually represents a marked change in trend of the coastline.
- 21. A vast, nearly level, treeless plain of the arctic regions of Europe, Asia, and North America.
- 23. A long,A tract of narrow arm of the sea bordered by steep cliffs: usually formed by glacial erosion.