Water as a Resource
a source or supply that a country has and can use to increase its wealth
resource
boundary between unsaturated ground and saturated ground
water table
a period of dry conditions caused by a decrese in precipitation over an amount of time
drought
How did water create the grand canyon?
erosion
Building a dam can effect water quality and ecosystems, but it also has positives. Besides flood control and water storage it can used to create this type of power caused by flowing water
hydropower
There are 2 ways that people use water, water that is consumed by an individual is which way?
direct water
an area of rock that absorbs and holds water that exists below the water table
aquifer
What is causing global average temperatures to rise?
increase in greenhouse gases
what had a big impact on how the United States developed?
water
In 2003, how much money did people in just the U.S. alone spend on bottled water?
$9 billion
There are 2 ways in which people consume water, water used to produce electricity that run a water treatment plant is an example of which kind
virtual water
amount of fresh water (non-salt) on Earth
2.5%
How much will oceans rise by the end of the 21st century
a narrow zone between an elevated region and a plain where rivers form falls and rapids
fall line
who currently funds the U.S. cities treatment, distribution, and recycling of water?
taxpayers
Currently, what percentage of freshwater is used for agriculture?
70%
How is population growth related to water demand
demand will increase
way that turbidity effects humans
the salt water mixes with fresh water making it undrinkable
Upstream or downstream
rivers move swiftly through narrow valleys
upstream
By 2025, how much of the worlds population will face some sort of water scarcity?
2/3 or 66%
What are 2 of the 3 sources of freshwater we have access to?
rivers, lakes, aquifers
As human need for water grows the water table lowers and does not have time to refill, what is one of the 2 major impacts this can cause
land subsidence or saltwater intrusion
Why does snow cover and glaciers disappearing lead to an increase in temperature
they reflect less light, more energy is absorbed on land
Why did early settlers construct major cities along rivers
They used rivers to transport supplies
Who can inact ordinances in an area to lead to water conservation or prevent wasteful water usage
cities