Geography - Dredging & Dams

Question 1

What is dredging?

Answer 1

Dredging is the process of removing sediment and debris from the bottom of lakes, rivers, harbours, and other water bodies to make them deeper and cleaner.

Question 2

Why is dredging important?

Answer 2

Dredging helps keep waterways navigable for boats, reduces flood risk, and can remove harmful pollutants from the water.

Question 3

What are the positive effects of dredging

Answer 3

Dredging can improve water quality, create new land for development, and help prevent flooding.

Question 4

What are the negative effects on dredging?

Answer 4

Dredging can harm marine habitats, increase water turbidity, and release trapped pollutants into the water.

Question 5

What is a dam?

Answer 5

A dam is a barrier built across a river or stream to control the flow of water and create a reservoir.

Question 6

Why are dams built?

Answer 6

Dams are built to store water, generate electricity, control flooding, and provide water for irrigation.

Question 7

What are the positive effects on dams?

Answer 7

Dams can provide a reliable water supply, generate hydroelectric power, and help control floods.

Question 8

What are the negative effects on dams?

Answer 8

Dams can disrupt local ecosystems, displace communities, and trap sediment, reducing water quality downstream.

Question 9

What are the benefits of dams?

Answer 9

Benefits of dams include water storage, flood control, and renewable energy production.