Reference no: EM132020774

Question:Multiple choice and one word

1) The most important variable that determines the size of sediment being transported, and whether a stream is erosional or depositional, is ______.

2) The sediment grain size that can be eroded at the lowest velocity is ______?.

a) sand 

b) silt 

c)gravel 

d) clay 

3)Which of the following characteristics does NOT increase downstream?

a)sediment size 

b) stream discharge 

c)  stream velocity 

d)  channel size 

e)  sediment load 

4)Which of the following processes is NOT part of the hydrologic cycle?

a)  dissolution 

b)  condensation 

c)  precipitation 

d)  groundwater flow 

e)  streamflow 

f) evaporation

5) The term groundwater mostly refers to ______.

a)  water that exists under the ground surface in small spaces between grains 

b)  underground lakes and ponds 

c)  water that exists on the ground at Earth's surface 

d)  underground streams 

6)Which of the following materials will likely have the lowest permeability?

 a) clay 

b)  gravel 

 c) sandstone 

d)  fractured igneous rock

7) he typical range of porosity in unconsolidated sand and gravel is:

a)  2 - 5% 

b)  30 - 40% 

c)  15 - 40% 

d)  70 - 90%