Mod 4 Quiz Water Quality and Availability
How much of the water on Earth (liquid, solid or gas) is fresh? 96.5% 1.75% 1.7% 3.5%
3.5%
What is the number of people on Earth that lack access to clean freshwater? 780 million 380 million 3.4 billion 3.4 million
780 million
Approximately how much water does it take to produce one pound of grain-fed beef? 8 gallons 8000 gallons 80 gallons 800 gallons
800 gallons
Globally, 70% of freshwater that humans use is used for: Domestic use Agriculture Industry Food system
Agriculture
The Las Vegas Water Authority seeks to build a 200-mile long pipeline to bring water to Las Vegas from: Lake Mead Basins in Eastern Nevada The Pacific Ocean The Colorado River
Basins in Eastern Nevada
Which of the following goods requires the most water to produce, per pound of material? Steel Grain-fed beef Cotton Grass-fed beef
Cotton
Considering the global distribution of water for human use, which of the following might be the single most effective approach of reducing demand on global water supplies? Water-efficient home washing machines Dry industrial production Efficient agricultural irrigation Low-flow toilets
Efficient agricultural irrigation
What process fluxes water from oceans (part of the hydrosphere) to the atmosphere? Infiltration Transpiration Evaporation Precipitaiton
Evaporation
Some Kansan farmers have committed to preserving the aquifer by reducing _______ by 20% over the next five years. Crop spraying Soil cultivation Crop production Groundwater pumping
Groundwater pumping
Developing countries often lack the ____________ necessary to ensure a reliable, clean supply of freshwater. Political stability Precipitation Land area Infrastructure
Infrastructure
Scientists with the Kansas Geological Survey say the Ogallala aquifer is not recharging with water due to: Paved surfaces Industrial overuse Domestic overuse Lack of precipitation
Lack of precipitation
How much water is lost from the global water cycle each year? 20% 10% 5% None
None
How much water is lost from the global water cycle with human input each year? None 10% 20% 5%
None
The Ogallala aquifer is the largest freshwater aquifer in ________. Australia North America California Africa
North America
What is necessary to ensure the Ogallala aquifer's water supply can be used sustainably? Prevention of precipitation runoff Cease all irrigation Cessation of groundwater pumping and rotation of crops Reduction of water usage and improvement of water policy
Reduction of water usage and improvement of water policy
Which country has the highest water use per capita on Earth? China United States India United Kingdon
United States
Iowa's landscape drainage system has been changed most significantly by the extensive development of _________. bridges parking lots roads agricultural tile systems
agricultural tile systems
Humans' psychological aversion to "recycled" water is kind of silly because ___________________. humans have evolved to drink only bottled water bottled water is recycled, but tap water isn't tap water is recycled, but bottled water isn't all water is recycled from somewhere
all water is recycled from somewhere