
Assigned on 4/7: SOL 6.7 Unit Review
Authored by Steve Davis
Science
6th - 7th Grade
Used 5+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an event in which large numbers of fish die as a result of unhealthy water quality?
fish kill
algal bloom
flood
turbidity
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What body of water forms where freshwater from a river meets and mixes with salt water?
a spring
a lake
an estuary
a tributary
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a high level of dissolved oxygen in a water quality sample most likely indicate?
the water is safe for all organisms to drink
there are too many particles in the water
the sample came from a healthy water source
the sample came from an unhealthy water source
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which human activity can increase the rate of erosion in a watershed?
using too many fertilizers and pesticides
constructing too many buildings and roads
not properly disposing of chemicals
limiting the use of fertilizers and pesticides
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is a reason why wetlands are important to humans?
wetlands provide us with minerals
wetlands move water to higher ground during flooding
wetlands filter pollutants out of water
wetlands mix salt water with freshwater
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Water from the Mississippi River watershed in Virginia ends up in
the Pacific Ocean
Albemarle Sound
the Chesapeake Bay
the Gulf of Mexico
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Look at the table for this question: A student monitored the water quality of four water sources. Which water source is most likely UNHEALTHY?
source 1
source 2
source 3
source 4
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