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6.8a Watersheds
| Term | Definition |
|---|---|
| A watershed is composed of _____. | the land that drains into a body of water. |
| A watershed is the land that water flows _____ on its way to a stream, lake, wetland, or other body of water. | across or through |
| _____ factors determine the type of ecosystem and the variety of plants and animals that can live there, as well as the usage of land by people. | Abiotic |
| All ecosystems, including watershed ecosystems, are affected by complex biotic and abiotic interactions involving exchanges of matter and energy. | True |
| An ecosystem is made up of the _____ (living) community and the _____ (nonliving) factors that affect it. | biotic, abiotic |
| The health of an ecosystem is directly related to water quality. | True |
| Water can travel into underground _____ on its way to larger bodies of water. | aquifers |
| Watersheds can be any size. | True |
| As water moves downhill with gravity in a watershed, water can pick up sediment and particles found in that watershed. | True |
| The health of an ecosystem is directly related to water _____. | quality |
| True or False: Smaller watersheds combine to form larger watersheds. | True |
| Abiotic factors determine ecosystem type and its distribution of plants and animals, as well as the usage of land by people. Abiotic factors include _____. | water supply, sunlight, soils, air quality, typography, landforms, geology, air quality, dissolved oxygen |
| Water-quality monitoring stations are often placed alongside creeks, rivers and streams to help determine the _____ of watershed. | Health |
| What are biotic factors of an ecosystem? | All living components such as grass, trees, animals...even if they had once been alive such as a log. |
| What are abiotic factors of an ecosystem? | All the non-living components such as rocks and soil, sunlight, water, etc. |
| Ecosystems are affected by complex _________ and ___________ interactions involving the exchanges of matter and energy. | biotic and abiotic |
| Elevated areas that divide watersheds are called? | Divides or ridges |
| Streams lead to rivers, rivers flow into a larger body of water. Streams and Rivers are both considered to be __________________. | Tributaries |
| What are some ways that a stream could start in higher elevations? | 1. natural spring (underground water(aquifer) bubbling up to surface) 2. melting glacier or snow 3. pond/lake |
| _______________________ is the force that causes water to flow from higher elevation to lower elevation | Gravity |
| What larger watershed do we live in? *64,000 sq miles, water travels over parts of 6 different states + Washington DC | Chesapeake Bay Watershed |
| Faster flowing water causes more oxygen in the water (positive) but creates more _____________________(dirt/sediment) carried away by water. | erosion |
| True/False: Meandering(curvy) streams do not travel fast so the dirt has time to settle to the bottom, making clearer water. | True |
| Cloudy water prevents ____________________ from reaching the plants at the bottom and without it they can't photosynthesis and die (no producers = broken food chain) | Sunlight |
| Virginia is apart of three different watersheds, which are: | 1. Chesapeake Bay 2. Gulf of Mexico 3. North Carolina Sound |
Created by:
wolfgacn