
Unit 13 Review
Quiz
•
Science
•
8th Grade
•
Easy
Arlanna Beckham
Used 19+ times
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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bioindicators (biological indicators) are used to measure the quality of water. What is a biological indicator?
any living creature
producers in aquatic environments
An organism sensitive to its environment that can indicate the quality of water.
algae
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A body of water showed a high turbidity level, high levels of nitrates and phosphates, a pH of 7.5, and low dissolved oxygen levels. Would this body of water be considered healthy?
Yes
No
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How could the use of fertilizers near the stream impact the health of a stream?
Nitrates and phosphates from fertilizer lead to algal blooms
Fertilizers are consumed by fish
Fertilizers do not impact water quality
Fertilizers use on land improves water quality
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the healthiest combination listed?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do low Dissolved Oxygen levels ( 3 or below) affect organisms?
Organisms may die or have to leave if levels get too low
Organisms go through more cellular respiration
Organisms eat more
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A substance with a pH of 8.2 is a __________ base (alkali) while a substance with a pH of 2 is a __________ acid.
weak, weak
weak, strong
strong, strong
strong, weak
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following can directly increase water turbidity?
Decreased temperature
Increased pH.
Increased soil erosion
Increased DO.
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