States & Properties
The three states of water are liquid, gas, and this state found in polar ice caps.
What is solid water (ice)?
The percentage of the Earth's water found in oceans and seas
What is 97%?
The process where liquid water turns to gas (water vapor) when heated by the sun.
What is evaporation
The process that must occur to collected water to turn it into drinking water.
What is purification?
The goal of sustainable water management is to provide water without hurting the environment and exhausting this
What is the water supply?
The water molecule is chemically composed of two atoms of hydrogen and one of this element.
What is Oxygen?
Water found on the continents with a lower amount of salt than seawater is called this.
What is fresh water?
This is what forms when water vapor rises, cools, and undergoes condensation.
What are droplets/clouds?
In the Collection step, humans obtain water from rivers, lakes, and this underground source.
What is groundwater?
Reducing the amount of water we use to rational amounts is an example of using water this way.
What is responsibly?
This is the term for water's property of being able to dissolve an extended variety of substances.
What is a great solvent?
This layer of soil and rock containing filtered surface water is where we find groundwater.
What is an aquifer?
The process by which living beings, particularly plants, release water vapor into the atmosphere.
What is transpiration?
After water has been used in homes, industry, or agriculture, it is called this.
What is wastewater?
Fixing broken pipes and leaks is necessary to improve these, thus avoiding water losses.
What are water distribution systems?
This unique property of water allows ice to float, which makes life possible beneath the surface layer of frozen lakes.
What is increasing in volume when it freezes?
Though it's only 1% of freshwater, this type of water, found in rivers and lakes, is the easiest for humans to access.
What is surface water?
The two ways precipitation water can move once it hits the surface: one flows over the ground, the other soaks in.
What are run-off and infiltration?
This type of facility is responsible for cleaning the water after it has been used, before returning it to nature.
What is a Wastewater treatment plant?
Treating polluted water allows it to be returned to nature or reused for these two specific purposes.
What are watering plants and street cleaning?
Explaining this thermal property of water is key to understanding why oceans regulate global climate and keep coastal areas mild.
What is absorbs and releases heat very slowly?
This type of water source makes up 70% of the world's freshwater, despite being difficult to access.
What are glaciers?
This is the specific term for the movement of water that flows over the surface of the Earth until it reaches lakes, seas, or oceans.
What is surface run-off?
These are the three main factors listed in the text that contribute to water being a limited resource.
What are limited availability (less than 1% surface/groundwater), unequal distribution, and increasing pollution?
Explain the difference between Purification and Wastewater treatment
What is Purification turns clean/raw water into drinking water, while Wastewater treatment cleans used, polluted water before returning it to nature?