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science (lava) vocab
5th grade science vocab definitions
| Question | Answer |
|---|---|
| Deposition | The dropping of sediment or particles by water, wind, or ice |
| Delta | A deposit of sediment that builds up at a river's mouth |
| Flood plain | A broad, flat valley through which a river flows |
| Longshore current | A current that moves parallel to the shore |
| Barrier island | A long, narrow island that forms along the coast |
| Sand dune | A mound of sand piled up by the wind |
| Glacier | A huge mass of ice and snow that moves slowly over the land |
| Moraine | A ridge of sediment and rock left behind when a glacier melts |
| Drumlin | A long, oval shaped mound of soil and rock formed from glacial deposits |
| Lava | Magma that reaches Earth's surface |
| Magma | Hot, molten rock deep below Earth's surface |
| Fault | A crack in Earth's crust whose sides show evidence of motion |
| Weathering | Breaking down rocks into smaller pieces |
| Mechanical weathering | A type of weathering that breaks rock into smaller pieces without changing it chemically |
| Chemical weathering | A type of weathering that changes rock into one or more new substances |
| Erosion | The picking up and carrying away pieces of rocks |
| Desert pavement | A surface of bare ground and large stones in a desert where wind has removed all particles of sand |
| Sea stack | A pillar of stone in the sea that forms headlands |
| Headland | A point of land that sticks out in the ocean |
| Sea arch | A formation made when waves first carve away softer rock in the headland |
| Dam | A structure built across a river to control its flow |
| Groin | A structure built at right angles to the beach to control beach erosion |
| Seawall | A structure built parallel to the shore to control beach erosion |
| Beach nourishment | The placement of additional sand on beaches to protect them from erosion |
| Contour plowing | Preventing erosion by plowing across rather than up and down a slope |
| Terracing | Shaping hillsides into steps so that runoff and eroded soil get trapped on the steps |
| Storm drain management | System of drains that prevents flooding during heavy rainstorms |
| Earthquakes | The shaking that results from the movement of rock beneath Earth's surface |
| Volcanoes | A weak spot in the crust where magma has come to the surface |
| Levee | A long ridge formed by sediments along a river channel |
| Ring of Fire | A major belt of volcanoes that rims the Pacific Ocean |
| Continental drift | The idea that the continents slowly move across Earth's surface |
| Ridge | A deep valley that forms where two plates move apart |
| Trench | A deep valley in the sea floor |
| Plate tectonic | A scientific theory that Earth's crust is made of moving plates |
| Crust | The rocky surface that makes up the top of the lithosphere and includes the continents and the ocean floor |
| Mantle | The layer of hot, solid material between Earth's crust and core |
| Tsunami | A giant wave caused by an earthquake on the ocean floor |
| Sediment | Small, solid particles of material from rocks organisms |
| Landform | A feature formed by the processes that shape the Earth's surface |
| Seismograph | A device that records ground movements caused by seismic waves |
Created by:
suema
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