Why Does Jakarta Flood So Easily?

What is the main reason why communities sprang up along rivers when people started moving from hunting and gathering to agriculture?

• Rivers had a lot of sand for building

• Rivers provided water and food like fish

• Rivers had beautiful landscapes

• Rivers were easy to cross

What is the role of regular floods along the Nile, Tigris, and Euphrates Rivers in agriculture?

• They make the soil infertile

• They cause droughts

• They replenish the soil with nutrients

• They destroy the crops

What is the difference between seasonal and perennial streams?

• Seasonal streams only have water if there’s been enough precipitation, perennial streams flow all year

• Seasonal streams flow all year, perennial streams only have water if there’s been enough precipitation

• Seasonal streams are not affected by overland flow, perennial streams are affected

• Seasonal streams are fed by underground sources, perennial streams are not

What is the purpose of constructing a hydrograph?

• To predict the exact time of a flood

• To understand how the stream responds to average rainfall and snowmelt

• To measure the depth of the river

• To control the flow of the river

What is the impact of urbanization on flooding in Java?

• Urbanization has no impact on flooding

• Urbanization increases the risk of flooding

• Urbanization reduces the risk of flooding

• Urbanization only affects the river flow

What is the function of wetlands in a stream system?

• Wetlands increase the speed of water flow

• Wetlands cause frequent, flashy flooding

• Wetlands absorb and slowly release excess runoff

• Wetlands have no impact on the stream system

What is the impact of removing wetlands from a stream system?

• It has no impact on flooding

• It only affects the water quality

• It increases the risk of flooding

• It reduces the risk of flooding

What is the purpose of constructing artificial wetlands?

• To reduce the risk of flooding

• To speed up the water flow

• To increase the risk of flooding

• To pollute the water

What is the main reason for constructing wetlands at the mouths of mines?

• To pollute the water

• To speed up the flow of the water

• To reduce the acidity of the water

• To increase the acidity of the water

What is the impact of modifying the river’s channel by adding dams?

• It only affects the water quality

• It increases the risk of flooding

• It has no impact on flooding

• It reduces the risk of flooding