Dredging (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is dredging used to extract?
What is dredging used to extract?
Metal ores from underwater locations
What are spuds in dredging operations?
What are spuds in dredging operations?
Vertical posts anchoring the vessel
What do wash-plants do in dredging?
What do wash-plants do in dredging?
Separate valuable ores from waste
What happens to waste material in the disposal phase?
What happens to waste material in the disposal phase?
Returned to the water system
What are placer deposits?
What are placer deposits?
Minerals concentrated by water action
Which material is commonly extracted through dredging?
Which material is commonly extracted through dredging?
Gold particles
How does dredging affect water quality?
How does dredging affect water quality?
Creates muddy water, reduces oxygen
What ecosystem impact does dredging cause?
What ecosystem impact does dredging cause?
Destroys habitats for aquatic life
How does dredging compare to open-pit mining?
How does dredging compare to open-pit mining?
Less visual impact on landscape
What is a key limitation of dredging?
What is a key limitation of dredging?
Weather-dependent operations
What does the bucket-wheel dredging system do?
What does the bucket-wheel dredging system do?
Scoops sediment from underwater surface