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Year 7 Geography
Term | Definition |
---|---|
Lava | Liquid magma that reaches the surface; also the rock formed when liquid lava hardens. |
Tectonic plates | Sections of the Earth's crust that move due to convection currents. |
Earthquakes | A sudden, violent movements of Earth's crust. |
Direction | Shown on a map by the points of the compass. |
Contour | A line drawn on a map to join places at the same height above sea level. |
Grid Square | A square on a map representing an area on the ground. |
Geography | The study of the earth's natural features and its people. |
Volcano | A cone-shaped mountain made up of lava and ash. |
Magma | Molten rock below the earth's surface. |
Peninsula | A piece of land surrounded on three sides by the sea. |
Core | The central part of the earth below the mantle. |
Mantle | The layer of the earth beneath the crust and above the core. |
Map | A drawing which shows part of the earth's surface at a reduced scale. |
Continents | Large landmasses on Earth's surface. |
Oceans | Large bodies of salt water that cover 71 percent of the Earth's surface and contain 97 percent of our planet's water. |
Greater Antilles | Group of islands that includes Cuba, Jamaica, Hispaniola, and Puerto Rico. |
Lesser Antilles | Group of islands that extend from the Virgin Islands to Trinidad and Tobago. |
Divergent boundary | A plate boundary where two plates move away from each other. |
Convergent boundary | A plate boundary where two plates move toward each other. |
Transform boundary | A plate boundary where two plates move past each other in opposite directions. |
Seismic waves | These are energy waves that result from earthquakes, explosions, or volcanoes. These waves are felt on earth's crust. |
Focus | The place inside Earth's crust where an earthquake originates. |
Epicenter | The point on earth's surface directly above the focus. |
Richter Scale | A scale that rates an earthquake's magnitude based on the size of its seismic waves. |