Chapter 3 Global Water Recources And Use

Question 1

How much of Earths surface is covered by water?

Answer 1

70%

Question 2

Oligotrophic lakes

Answer 2

Generally clear due to low nutrient levels and have little plant life

Question 3

Mesotrophic lakes

Answer 3

Have good clarity and an average level of nutrients

Question 4

Eutrophic lakes

Answer 4

Enriched with nutrients, resulting in large amounts of plant growth with possible algal blooms

Question 5

Hypertrophic lakes

Answer 5

Have been excessively enriched with nutrients and poor water clarity. Often the result from human activities

Question 6

What type of lake has the highest drinking water quality?

Answer 6

Oligotrophic lakes

Question 7

Littoral zone on a lake

Answer 7

The sloped area close to land

Question 8

Benthic zone for a lake

Answer 8

Bottom of lake, no sunlight

Question 9

Seasonal turnover

Answer 9

The exchange of surface and bottom water in a lake or pond that happens twice a year (spring and fall)

Question 10

Wetlands include…

Answer 10

Swamps, estuaries, marshes and bogs

Question 11

Aquifer

Answer 11

A geologic formation that contains water, sufficient to support a sell or spring

Question 12

Aphotic zone in ocean

Answer 12

The depths beyond which less than 1% of sunlight penetrates

Question 13

Photic (Euphotic) zone in oceans

Answer 13

Depth of all the water that is exposed to sunlight and photosynthesis occurs, biologically diverse.

Question 14

What percent of freshwater is used for agriculture?

Answer 14

70%

Question 15

The temp at which air becomes saturated and produces liquid is called

Answer 15

The dew point