Impact on Ecosystems Test Review
1. Define the following:
a. Weathering - ___________________________________________________________________
b. Erosion - ______________________________________________________________________
c. Deposition - ___________________________________________________________________
d. Resource Depletion - ____________________________________________________________
2. Rivers when they first begin are almost completely straight. Over time rivers develop more curves and
bends. Explain why this happens. ________________________________________________________
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3. Vegetation helps to slow erosion. Explain how vegetation could slow erosion. ____________________
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4. Classify the following as mechanical (M) or chemical (C)weathering:
Carbonic acid ____
Animal burrowing ____
Ice wedging ____
Caves Forming _____
Oxidation ____
Plant roots ____
Abrasion ____
Deltas forming _____
5. Texas has a variety of ecoregions that include coastal areas, prairie-grasslands, piney woods, and the
hill country. Each environment is changed by weathering, erosion, and deposition differently. Describe
how coastal areas, blackland prairies, savannah, piney woods, and the hill country are affected by
weathering, erosion, and deposition.
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6. Explain which of the following events are most likely to happen in Texas: flood, volcanic eruption,
hurricane, drought, earthquake, and tornado. ______________________________________________
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7. What landforms do deposition create? ____________________________________________________
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8. Some catastrophic events can trigger other catastrophic events to occur. Explain 2 events that a
hurricane could trigger. ________________________________________________________________
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9. Ecosystems consist of the living and nonliving factors in the environment; including plants, animals,
land, and the atmosphere. Floods, hurricanes, and tornadoes are catastrophic events that impact
ecosystems. Describe how floods, hurricanes, AND tornadoes could impact an ecosystem. (Rubric: 6
pts) ________________________________________________________________________________
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10. Ground water levels do not stay constant. Explain 2 things the effect the amount of groundwater
available, one that increases and one that decreases the amount of groundwater available. _________
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11. Identify 2 positive and 2 negative human activities that could affect water in a watershed. Explain how
each of these could benefit or hurt the groundwater and surface water. (Rubric: 8 pts) ____________
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12. Explain how fertilizer could be harmful to the environment. ___________________________________
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13. What type of weathering plays the largest role in shaping the region shown below?