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Science
PSSA Vocab Unit 3
Term | Definition |
---|---|
Acid deposition | Precipitation with a pH less than 5.6 that forms in the atmosphere when certain pollutants mix with water vapor. |
Stream order | Energy and nutrient flow that increases as water moves toward the oceans (e.g., the smallest stream (primary) that ends when rivers flow into oceans) |
Topographic map | Representation of a region on a sufficient scale to show detail, man-made and natural features of a portion of the land including certain physical & cultural features; the portrayal of the position, relation, size, shape and elevation of the area |
Watershed | The land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin. |
Wetlands | Lands where water saturation is the dominant factor determining the nature of the soil development and the plant and animal communities (e.g., sloughs, estuaries, marshes). |
Hydrology | The scientific study of the properties, distribution and effects of water on the earth’s surface, in the soil and underlying rocks and in the atmosphere. |
Groundwater | Water that infiltrates the soil and is located in underground reservoirs called aquifers. |
Mitigation | The policy of constructing or creating man-made habitats, such as wetlands, to replace those lost to development. |
Lentic | Relating to or living in still water. |
Lotic | Relating to or living in actively moving water. |