Sec 2 Floods #1

Has Singapore ever experience flood?

• Yes

• No

• I don't know

In this chapter, we focused on how people are ______ and ______ affected by floods.

• Socially

• Environmentally

• Economically

What are the types of floods we have learnt in this chapter?

• Coastal flood

• River flood

• Flash flood

• All of the above

Which of the following is/are the main cause(s) of flooding?

• Rainfall

• Snowmelt

• Storm surge

• Failure of man-made structure

Flooding can happen when _____ and the floodwaters spill over the riverbanks, typically into its surrounding areas, like a floodplain.

• there is too much rain

• there is eutrophication

• the capacity of a river is exceeded

• the land is too steep

______ is a sudden rise of the sea level in which water is piled up against the coastline beyond normal high tide conditions.

• Storm surge

• Storm wind

• Wave surge

• Wave tide

Which of the following is not a natural cause of coastal flood?

• Storm surge

• Heavy rainfall

• Snowmelt

• Dam failure

Which of the following is not a characteristic of rainfall?

• Rainfall frequency

• Rainfall concentrations

• Rainfall intensity

• Rainfall duration

Major flooding can occur along the coast due to ______.

• Failure of floodplains

• Landslides

• Failure of levees

• Failure of floodwalls

Coastal floods can be caused by _____?

• Tropical storms

• Tropical cyclones

• Tsunamis

• All of the above