Hydrology Review

As human population increases exponentially, what happens to the amount of freshwater?

• it increases

• it decreases

• it stabilizes

• it increases then decreases

High levels of which is likely to improve biotic index of a stream?

• algae growth

• decaying matter

• suspended solids

• dissolved oxygen

Which is the most common contamination source for freshwater resources?

• runoff

• digging wells

• melting of glaicers

• lightening

Which is true of man-made dams?

• reduce risk of upstream flooding

• don't affect the character of the dammed river downstream

• located where they don't affect preexisting farms

• provide more dependable water resources for humans

How can you maximize freshwater resources?

• increased infiltration to fertilize crops

• reduced treatment by waste water treatment plant

• reduce measures to prevent arsenic contamination

• law regulating the amount of pollution dissolved in a river

Which is a non-point source of pollution?

• toxic waste given off by a chemical research facility

• exhaust from car tailpipes

• emissions ejected from smokestacks

• fertilizers washed away from farmlands by runoff

A student takes a bottle of cold water from the refrigerator and leaves it on the counter. Ten minutes later, the student noticed there is now water on the outside of the bottle. What scientific phenomenon explains the water on the outside of the bottle?

• Condensation because the temperature of the air nearest the bottle increased causing water droplets to form

• Condensation because the temperature of the air nearest the bottle decreased causing the water droplets to form

• Evaporation because the temperature of the air nearest the bottle increased causing the water droplets to form

• Evaporation because the temperature of the air nearest he bottle decreased causing the water droplets to form

Refer to the diagram below of a student's lab setup of the water cycle. In this experiment, the total amount of water inside the container is measured at the beginning and then again after a full cycle has occurred.

Which of the following best predicts the outcome of the experiment and explains why?

• The beginning amount of water in the container would be less than the ending amount of water in the container because the water evaporated, decreasing the water level.

• The beginning amount of water in the container would be more than ending amount of water in the container because the process of condensation increases the water level.

• The beginning and ending amounts of water in the container would be equal because the water that was evaporated increased the water level but then came back as precipitation which decreased the water level again

• The beginning and ending amounts of water in the container would be equal because the water that was evaporated decreased the water level but then came back as precipitation which increased the water level again.

The graph shows the distribution of water on Earth's surface.

What can be concluded from the image?

• Most of the freshwater on Earth is found in oceans

• Most of the water available on Earth is not drinkable

• Most of the water available on Earth is drinkable

• Most of the freshwater on Earth is found as groundwater

Where does most of the water evaporation on Earth come from?

• Transpiring plants

• Rivers

• Oceans

• Surface Lakes