esci 21-40
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21. Sources of groundwater contamination include:
a. pesticides and fertilizers
b. oil
c. salt water
d. landfills/waste
e. all of the above
- all of the above
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22. When sediment is floating in a stream creating “murky†water, the sediment is moving (transported) as part of its _____________ load.
a. dissolved
b. suspended
c. bed
d. sorting
e. flooding
- suspended
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23. This drainage pattern occurs when streams diverge from a central elevated area.
a. rectangular
b. radial
c. dendritic
d. trellis
- radial
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24. To achieve flood control, ___ involves altering a stream channel in order to speed the flow of water.
a. entrenchment/ b. rectifying
c. channelization
d. rejuvenation
e. replenishment
- channelization
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25. The single most important erosional agent is/are ____________
a. running water
b. glaciers
c. wind
d. waves
e. plants and animals - running water
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26. The continuous movement of water from the oceans to the atmosphere, from the atmosphere to the land, and from the land back to the sea is known as ____________
c. the Hydrologic cycle
- the Hydrologic cycle
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27. The deposition of sediment based on the size of the particle is called _____
a. erosion/b. transportation
c. bed load/d. weathering
e. sorting
- sorting
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28. Seismologists are currently looking at animal behavior as a gauge to seismic activity. a.True
b. False
- true
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29. Ultimate base level is sea level.
a. True
b. False
- true
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30. Karst topography is mainly the result of acid precipitation meeting and dissolving the limestone bedrock.
a. True
b. False - true
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31. As its name implies, the water table is always very level (flat).
a. True
b. False
- false
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32. Which erosional features r exhibited by an older stream?
a. deltas, oxbow lakes, natural levees
b. nat levees, back swamps, pt bars
c. cutbanks, u-shaped river beds, wide flood plains
d. all of the above
- all of the above
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33. The steeper the slope of a mountain, the higher the chance for mass wasting to occur.
a. True
b. False
- true
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34. The water table separates the zone of aeration and the zone of saturation.
a. True
b. False
- true
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35. Tsunamis are tidal waves that are often caused by the gravitational forces of the Earth, Moon, and Sun.
a. True
b. False
- false
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36. Chemical weathering would be most effective
a. in a warm, dry climate
b. in a cold, dry climate
c. in a warm, humid climate
d. equally in any kind of climate - in a warm, humid climate
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37. Which is not tru about mechanical weathering?
a. prod smaller pieces
b. adds 2 the effectiveness of chem weathering
c. may lead 2 da formation of talus slopes
d. does not change the rock’s mineral composition
e. does not affect metamo - does not affect metamorphic rocks
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38. The center or inner core of the Earth is composed mainly of iron (Fe) and Nickel (Ni).
a. True
b. False
- true
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39. The incorporation and transportation of material by water, wind, or ice describes the process of ___
a. weathering/b. erosion
c. mass wasting/d. sheeting
e. none of these
- erosion
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40. Oceanic crust tends to be less dense than continental crust
a. True
b. False - false