| Term | Definition |
|---|
| archipelago | a group of islands or a body of water that has many islands in it |
| atoll | a circular coral island that encloses a lagoon |
| bay | a body of water tha penetrates a coastline |
| canyon | a deep, narrow depression in the earth's surface, often having a river running through it |
| cape | a point of land extending in the sea |
| continental divide | the highest point of a continent, from which the direction of river is determined |
| delta | the triangular-shaped land found at the mouth of some large rivers |
| estuary | an ocean inlet that merges with the mouth of a river |
| fjord | a narrow, winding ocean inlet that penetrates a coastal mountain range |
| glacier | a river of ice, moving slowly down a mountain slope or outward from its central mass |
| gulf | a part of an ocean or sea that is partially enclosed by a curving coastline |
| headwaters | upper river springs, streams, and tributaries |
| island | a body of land completely surrounded by water |
| isthmus | a narrow strip of land with water on both sides, that connects two larger land masses |
| lagoon | a small body of water separated from the larger sea by a barrier of sand or coral reefs |
| mesa | a tall, flat-topped mountain with steep verticle sides |
| ocean currents | ocean streams that are propelled by prevailing winds and earth rotation |
| peninsula | a mass of land almost entirely surrounded by water |
| plateau | a broad expanse of generally high and flat land |
| reef | a narrow, low ridge of rock, or more commonly of coral, that is connected to a coast or lies off a coast |
| strait | a narrow passage of water connecting two larger bodies of water |
| What are the only earth zones in which all four seasons occur? | Temperate Zones |
| What is the name for the mega continent many years ago? | Pangaea |
| How long ago did the mega continent exist? | 200 million years |
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