Exam (elaborations)
BESC 320 Mid-term Questions & Answers
- Course
- Institution
BESC 320 Mid-term Questions & Answers
[Show more]
Content preview
BESC 320 Mid-term Questions &Answers
Drinking water are tested for the following, based on Safe drinking water act Correct Ans-
Disinfection byproducts, E. coli, and lead
The changes in the source water quality can impact the drinking water treatment process.
Correct Ans-True
In a household, which of the following can be used to reduce human lead exposure (potentially
leaking from the house plumbing) Correct Ans-Point of use installation of a filter certified to
remove lead and drinking bottled water
What water/products are regulated by FDA? Correct Ans-bottled water, flavored and
nutrient-adding water
What is the percentage of freshwater in the total global water? Correct Ans-2.5%
In the evapotranspiration process, what is the estimated percentage goes into recharging the
groundwater? Correct Ans-1/6 (16%)
What is the common test to screen radioactivity in water? Correct Ans-gross alpha test
Four factors that impact bacteria survival/die off in water Correct Ans-temperature, pH,
drying, and UV radiation
What are the 5 components in the water cycle? Correct Ans-Precipitation, condensation,
runoff, infiltration, evapotranspiration
, What are the parameters that are commonly used for natural water monitoring? Correct
Ans-Dissolved oxygen, planktons, turbidity, fish species
Why is water pH important for aquatic life? Correct Ans-It determines substances' solubility,
it determines the bioavailability of nutrients, it determines the bioavailability of essential metals
and toxic metals
What is the concentration threshold of dissolved oxygen that is stressful for aquatic life?
Correct Ans-lower than 3 mg/mL
How to measure water turbidity? Correct Ans-Measure the light scattering effect based on
the suspended particles in water
Which is the following has the highest electrical conductivity? Correct Ans-0.5 mole/L KCL
electrolyte solution
When planning for water sampling in streams, one should consider Correct Ans-Design
sample labels to record location, data, and other relevant sample information, AND sample
main current
Which of the following can increase electrical conductivity of natural water? Correct Ans-
Wastewater discharge, agricultural runoff, urban runoff, flooding, and events like heavy rain and
snowmelt
To perform a water quality evaluation project of natural water, we shall Correct Ans-Establish
the baseline characteristics, establish a spatial and temporal sampling plan, establish a data
management plan to set comparison thresholds, and determine what are the critical
parameters to measure
Waters of the US includes Correct Ans-Beach water of the Pacific Ocean off of California,
Mississippi River, hoover dam reservoir
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ExamRoom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now