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| Either a group of islands or a body of water that has many islands in it. The Hawaiian islands; the Aegean Sea of the coast of Greece. |
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| A circular coral island that incloses a lagoon. Atolls are usually formed on top of submerged volcanos. Bikini Atoll in the Marshall Islands of the Pacific Ocean, a U.S. atomic test site. |
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| A body of water that penetrates a coastline. It is generally wider in the middle. It is usually smaller than a gulf, but larger than a cove. Delaware or Chesapeake Bays. |
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| A deep, narrow depression in the earth's surface, often having a river running through it. Canyons are also known as gorges. Ravines are not quite as deep. The Grand Canyon in northwest Arizona. |
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| A point of land extending into a sea. It is usually smaller than a peninsula. A mountainous cape is called a promontory or a headland. The Cape of Good Hope off of the South African coast |
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| The highest point of a continent, form which the direction of a river flow is determined. The Great Divide is a name given to the crest of the Rocky Mountains which sends rivers east and west. |
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