WorksheetsWater Quality Review
Total questions: 13
Worksheet time: 7mins
What is dissolved oxygen?
oxygen gas dissolved in water
a primary plant nuttient
a measure of how acidic or basic a substance is
What are nitrates?
a measure of how acidic or basic a substance is
oxygen gas dissolved in water
a primary plant nutrient
What is pH?
a primary plant notrient
oxygen gas dissolved in water
a measure of how acidic or basic a substance is
Which is a true statement of the diagram above?
As temperature increases dissolved oxygen increases
As temperature decreases dissolved oxygen decreases
As temperature increases dissolved oxygen decreases
Noe of the above
The pH of healthy water is _______________.
0-5
6.5-8.5
9-14
If a body of water has low levels of dissolved oxygen, what can most likely be concluded?
water has high salinity
water has high turbidity
water temperature is high
water has a low pH
Which source most likely contains a large amount of nitrates and is non-potable?
water near agricultural land
water near a hillside
water with a lot of leeches
water source with a lot of aquatic life
Which factors are most characteristic of a healthy body of water?
high temperature and low amounts of algae
low salinity and high turbidity
high pH and low dissolved oxygen
low turbidity and high dissolved oxygen
All of the following add Dissolved Oxygen to the water except....
From Photosynthesis by underwater plants
Movement of the water
Air in the atmosphere
Underground Oxygen deposits
How do bacteria affect Dissolved Oxygen (DO) in water bodies?
increase DO through decomposition
decrease DO through decomposition
DO stays the same
bacteria multiply DO by 8
Why does the amount of dissolved oxygen increase during the day?
The sunlight allows photosynthesis to occur
The warmer temperatures allow the water to hold more oxygen
The fish are more active so they are respiring more
