3/10/2010
Where is most of Earth’s fresh water found? 1. 2. 3. 4.
Lakes. Ice caps and glaciers. Rivers. Underground.
Which of the following statements is true?
1.
51% 39%
Explanation: 79% of Earth’s fresh water is currently locked up in ice! Less than 21% has the potential for use by land‐ based life.
2. 3. 4.
10%
12% 5%
2
3
4
1
88%
groundwater. runoff. soil moisture. the water table. the water table.
2
2% 3
4
The work of surface water does all of the following EXCEPT
Precipitation that does not infiltrate becomes
1. 2. 3. 4.
erosion. delta formation. deposition. land subsidence. land subsidence.
Explanation: Groundwater withdrawal causes land subsidence.
Explanation: If water does not infiltrate, it stays on the surface and flows downslope
8%
1
5% 2
3
0% 4
Which of the following is not a variable that influences the speed of water in a stream? 1. 2. 3. 4.
80%
0% 1
1. 2. 3. 4.
Evaporation and precipitation are greatest over the oceans. Most free‐flowing water on Earth occurs in lakes and rivers in lakes and rivers. On the continents, evaporation exceeds precipitation. The total amount of water vapor in the atmosphere varies seasonally.
Gradient Discharge Channel geometry Flow
55%
The dumped sediment from a stream flowing into standing water is called a 1. 2. 3. 4.
delta. divide. drainage basin. floodplain.
71%
26% 17%
12%
10%
7% 2% 1
2
3
4
1
2
3
4
1
