- Soil: the portion of the earth's surface made up of humus. Synonym: farmland.
- Earth's crust.*
- Sudden: happening, coming, made, or done quickly or unexpectedly.
- Mammal: an animal that is born from its mother's body, not from an egg, and drink's it mother's milk as a baby.
- Amphibian: an animal that can live both i water and on land, exaple: a frog.
- Reptile: a type of cold-blooded animal that has scales (flat, hard pieces of skin) all over its body and lays eggs.
- Oxygen: a gas in the air that has no smell or taste, and that all animals need in order to breathe.
- cut down: to cut through a tree and make it fall to the ground.
- Mountain: high elevation on the Earth's surface, wich can be grouped in mountain ranges.
- Valleys: areas lowland surrounded by uplands (normally mountains), often with a river running through. River valleys are formed by a river into a V shape: ravine, gorge and canyon. Glaciar valleys are formed by a glacier into a U-shape. Deep coastal valleys are called fjords.
- Plateau: Large areas of flat or slightly hilly land and unlike plains, higher than the land around them.
- Plains: large areas of flat or slightly hilly land not much higher than sea level, formed by accumulation of sediment from erosion.
- Glacier: Large mass of ice that forms at the top of a mountain and moves like a river. As it moves, it picks up debris. When the ice melts, the debris forms deposits of stone and mud called morines.
- Stream: flow of water with less volume than a river, which can dry up at certain times of year.
- Delta: accumulation of materials (sand and stones) deposited by the river in a shallow part of the coast where it meets the sea and often triangular-shapped.
- Estuary: mouth of a river open to the sea originates on coasts with strong tides. Fresh river water in a stuary mixes with salt water entering the mouth of the stuary from the sea.
- Gulfs: are deep inlets of the sea
- Beaches: are formed on low coasts by the accumulation of sand and gravel.
- Capes: are large areas of high coastal land that stick out into the sea.
- Clifs: are high, steep rock faces, especially at the edge of the sea.
- Continental shelf: Is a submerged plain, which is an underwater extension of a continent. It extends to a depht of 200 m, but in some cases it can reach 500 m.
- Abyssal plain: is a large expanse of land at the bottom of the ocean at round 5500 m deep. Here we find trenches and ocean ridges.
- Continental slopes: is the incline from the continental platform to the abyssal plain. It can be up to 3600m deep
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| this is the Earth's crust. |
Well done!!!
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