6th Grade Science Facts
Terms
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- Deep-Ocean Trench
- A deep Valley along the ocean floor
- Delta
- A landforma made of sediment that is deposited where a river flows into an ocean or lake.
- Density
- The amount of mass per unit volume in a given area
- Desert
- An area that receives less than 25 cm of rain per year
- Dew Point
- The temperature where condensation begins
- Divergent Boundary
- A plate where two plates move away from each other
- Dormant
- A volcano that does not show signs of erupting
- Drought
- A long period of water shortage
- Earthquake
- A shaking that results from rocks below the Earth's srfact
- El Nino
- An abnormal climate event that occurs every 2 to 7 years in the Pacific Ocean
- Element
- A suubstance composed of a single kind of atom
- Epicenter
- The point on Earth's surface directly above an earthquake focal point
- Erosion
- The process by which soil is moved by ice, wind, gravity, and water
- Evacuate
- To move away temporarily
- Equator
- An imaginary line that circles the Earth halfway between the North and South poles
- Extrusive Rock
- igneous rock that forms from lava on Earth's surfact
- Extinct
- Said of a volcano that is unlikely to erupt agian
- Fault
- A break in Earth's crust
- Focus
- The point under Earth's surface where pressure causes an earthquake
- Footwall
- The block of rock that forms the lower half of a fault