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Year 8 Geography
| Term | Definition |
|---|---|
| Atmosphere | The gas around the earth. |
| Climate | The average weather conditions of a place over a long period of time. |
| Weather | The day-to-day condition of the atmosphere. |
| Water Cycle | The never-ending movement of water between the sea,the land and the air. |
| Reservoir | An artificial lake used to store water. |
| Relief Rain | Caused when air is forced to rise over hills and mountains. |
| Precipitation | Water in any form which falls to earth. |
| Geography | The study of the earth's natural features and its people. |
| Ground Water | Fresh water stored in rocks and the soil. |
| Meteorology | The study of weather and what causes it. |
| Landforms | Natural features formed by river, the sea, ice and volcanoes. |
| Ecosystem | A community of plants and animals that live together in the environment. |
| Evaporation | The process by which liquid water changes to water vapour when it is warmed. |
| Temperature | A measure of how warm or cold it is. |
| Transpiration | The process by which water from plants changes into water vapour. |
| Grid square | A square on map representing an area on the ground. |
| Isobar | A line on a map joining places with the same atmospheric pressure. |
| Hurricane | A severe storm that develops over tropical oceans and whose strong winds of more than 120 km/h spiral in toward the intensely low-pressure storm center |
| Climate zones | Polar, Temperate, Tropical. |
| Latitude lines | Lines that run east to west and are parallel to the Equator. |
| Longitude lines | Imaginary north-south lines that run vertically around the globe parallel to the Prime Meridian. |
| Air Pressure | The amount of air pressing on the earth's surface. |
| Low Air Pressure | clouds, precipitation, and other turbulent weather, such as tropical storms and cyclones. |
| High Air Pressure | Pleasant weather conditions. eg sunshine and clear skies. |
| Low Air Pressure | Reading below 1013 mb on a barometer. |
| High Air Pressure | Reading 1013mb and above on a barometer. |
| Emergent Layer | The tallest layer of the rain forest that receives the most sunlight. |
| Forest floor / shrub layer | The lowest level of the rainforest, containing herbaceous plants, fungi, leaf litter, and soil. |
| Understory layer | The layer of the rainforest between the canopy and rainforest floor. It receives little light. |
| Canopy layer | Layer where trees grow close together, blocks most of sunlight and keeps moisture from evaporating |
| Biome | A group of ecosystems with similar climates and organisms. |
| Saffir-Simpson Scale | Classifies hurricanes according to air pressure in the center, wind speed, and property damage potential on a scale ranging from Category 1 to Category 5. |
| Rainforest | An area of lush vegetation and year-round rainfall. |
| Coastal Landforms | Large features within a coastal area formed by processes such as erosion and deposition. |
| Coast | Where the land meets the sea. |