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| One of 7 large landmasses on the earth's surface. |
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| A large rigid section of the Earth's crust that is in a constant motion. |
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| A sudden movement of the Earth's crust followed bt a series of shocks. |
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| A zone of volcanoes around the Pacific Ocean. |
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| An opening in the Earth's crust from which molten rock, ash and hot gases flow or are thrown out. |
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| The gradual physical and chemical breakdown of rocks on the Earth's surface. |
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| Pieces of rock in the form of sand, stone, or silt deposit by wind, water or ice. |
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The area drained by a major river.
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A large, slow-moving mass of ice.
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| Water found beneath the Earth's surface. |
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| The circulation of water between the Earth, the Oceans and the atmosphere. |
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| A feature on the Earth's surface formed by the physical force. |
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| A broad, flat area of land higher than the surrounding land. |
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| The difference in the elevation of a landform from it's lowest point to it's highest point. |
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| The submerged land at the edge of the continent. |
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| The layer of gases that surround the Earth. |
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| The time during the year when the sun reaches the farthest northern or southern point in the sky. |
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| One of the 2 times a year when the sun's rays are over the equator and days and nights around the world are equal in length. |
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| The condition of the Earth's atmosphere at a given time and pace. |
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| the typical weather condition of a region over a long period of time. |
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| Falling water droplets in the form of rain, snow, sleet or hail. |
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An area that has simalar plants.
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| A vegitation region with a mix of grassland and scattered trees. |
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| A region with plants specially adapted to dry conditions. |
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| An increasing inthe average temperture of the Earth's atmosphere. |
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| The trappimg of the sun's heat by gases in the atmosphere. |
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| Any gas in the atmosphere that contributes to the greenhouse effect. |
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| Fuels such as coal, oil and natural gas. |
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| The procces un which farmland becomes less productive becomes the land is degrated. |
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| Using natrual resourses in a way they exist for the future generations. |
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| A gas composed of carbon and oxygen. |
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| Subsatance dicharged into the air. |
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