WorksheetsFreshwater Unit Check
Total questions: 16
Worksheet time: 9mins
What is the primary source of groundwater?
Precipitation
Lakes
Oceans
Rivers
Which of the following best describes macroinvertebrates?
Vertebrates with large bodies
Small aquatic organisms without a backbone
Fish species in large rivers
Microscopic plants
Pollution sensitive macroinvertebrates are known to:
Tolerate a lot of pollution
Tolerate a moderate amount of pollution
Do not tolerate pollution
Can indicate unhealthy rivers
What is one of the main causes of stream erosion?
Planting trees
A decrease in rainfall
More urbanization and land development
Slow moving water current
What can benefit local ecosystems by stream restoration?
Increasing pollution and fertilizer run off
Reducing biodiversity
Stabilizing river banks
Eliminating large fish species
Which of the following is a common method for identifying macroinvertebrates?
DNA sequencing
Observing physical characteristics
Counting vertebrate
Measuring body temperature
A species which is considered a nuisance species which can cause large scale disruption to ecosystems is considered an (a) species
What is a significant threat to endangered species in local aquifers?
Increased rainfall
More urban development
Decrease in water pH
Introduction of native species
The Edwards Aquifer is regulated in order to save water not just for supply but also to help preserve endangered species native to aquifer habitats
True
False
How does groundwater recharge occur?
Through evaporation
Through river drainage
Through infiltration of rainwater
Through ocean tides
What is an effect of excessive stream erosion?
Formation of new habitats
Increased sediment in water
Decreased water flow
Stabilized river banks
Which practice is most beneficial for stream restoration?
Removing all vegetation near river banks
Constructing artificial barriers
Planting native vegetation
Urbanization
What role do macroinvertebrates play in assessing water quality?
They serve as top predators in food webs
None, and they are unaffected by any pollution
They help indicate water quality
All of them consume pollutants
What is a common characteristic of streams undergoing restoration?
Improvement in water quality
Increased turbidity
Deeper water channels
Decrease in biodiversity
Which of the following is not a factor in stream erosion?
Vegetation cover
Healthy riparian zones
Water temperature
Water velocity
Which of the following is not a quality of rainwater harvesting?
Contains a lot of contaminants compared to groundwater
Improvement of vegetation by using rainwater
Lack of dissolved minerals (softer than aquifer water)
Able to bypass local water supply
