Chemistry
What are the atoms in one molecule of water? (Hint: molecular formula)
1 oxygen and 2 hydrogen atoms
What is the name of the process that occurs when overabundance of nutrients cause rapid algal growth in water?
Eutrophication
What happens to the amount of plant life in the water during Eutrophication?
Increases
Filtration
What are the states of matter in which we find water on earth?
Solid (ice), liquid (water), gas (steam/water vapor)
Name 2 categories of contaminants in water?
Chemical, bacterial, radiological, physical
What are two sources of contamination that leads to eutrophication?
Agriculture, industry, pharmaceuticals
True or false: sewage water is repurposed for drinking?
True!
Gases are more soluble in water at ____ temperatures
Colder
What percentage of the world's water is available for human use?
What are 2 harmful effects of algal blooms ?
Toxins, able to clog fish gills, decrease in dissolved O2
What are 2 of the 3 types of filtration?
Mechanical, biological, chemical
Water molecules tend to "stick" together because of positively and negatively charged "ends" of the molecule, making it is what kind of molecule?
A polar molecule
What number of people or percentage of the world population lack(s) access to clean drinking water?
700 million+ people / 10%
What two elements are the main contributors to eutrophication?
Phosphorus and nitrogen
Why isn't physical filtration enough to make water safe to drink?
There are still biological, chemical, or radiological contaminants!
What is the name of the phenomenon to describe movement of water across a semi-permeable membrane?
Osmosis
Other than mercury, what is one of the major metals that contaminate our water?
Lead, cadmium, copper, zinc, silver, chromium, arsenic
Bacteria feed on increased plants and deplete the dissolved oxygen levels
What are 2 uses for reclaimed water?
irrigation of public parks, toilet flushing, air conditioning, street cleaning, vehicle washing, seed crops, cooling water, dust control, wetlands/stream augmentation, wildlife habitats