science (lava) vocab Word Scramble
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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 |
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