Correct Answers
What is environmental science? - CORRECT ANSWER✔✔systematized knowledge derived from
and tested by recognition and formulation of a problem, related with natural environment,
including atmosphere, the land, the water, and their inhabitants as differentiated from the build
environement
What is environmental engineering? - CORRECT ANSWER✔✔sound engineering thought and
practice in the solution of problems of environmental sanitation
What is engineering? - CORRECT ANSWER✔✔A profession that applies science and
mathematics
Why are civilizations near rivers? - CORRECT ANSWER✔✔need for clean water
When do sewers date back to? - CORRECT ANSWER✔✔3500 BC
Who discovered contaminated water leads to disease? - CORRECT ANSWER✔✔John Snow and
William Budd
What caused the need for air pollution control? - CORRECT ANSWER✔✔industrial revolution
When was the EPA established? - CORRECT ANSWER✔✔1970
What is AQI? - CORRECT ANSWER✔✔Air Quality Index
, What is the range of AQI? - CORRECT ANSWER✔✔0 to 500
What are some areas of interest in environmental engineering? - CORRECT ANSWER✔✔water
treatment, wastewater treatment, air pollution control, and solid waste management
How is the AQI obtained? - CORRECT ANSWER✔✔measuring concentration of air pollutants
What is the atomic number? - CORRECT ANSWER✔✔number of protons
What is the mass number? - CORRECT ANSWER✔✔sum of protons and neutrons
What is the atomic weight? - CORRECT ANSWER✔✔weighted average mass of all isotopes of an
element
What is electronegativity? - CORRECT ANSWER✔✔ability of an atom to attract electrons
What are cations? - CORRECT ANSWER✔✔positively charged ions
What are anions? - CORRECT ANSWER✔✔negatively charged ions
What is an ionic bond? - CORRECT ANSWER✔✔attraction between a cation and anion
what is a covalent bond? - CORRECT ANSWER✔✔sharing a pair of electrons between two atoms
What is a polar covalent bond? - CORRECT ANSWER✔✔bonding electrons are shared unequally