5 Answer the questions.
1 Why are bridges unsafe after a flood?
2 How do levees protect cities from flooding?
3 How did Hurricane Katrina cause a flood?
Suggested Answers:
1 Because flood waters may have damaged or destroyed them.
2 Levees are walls built around rivers. They protect a city from flooding as flood water cannot get over the wall.
3 Hurricane Katrina caused a flood by breaking more than 50 levees.
1 Why are bridges unsafe after a flood?
2 How do levees protect cities from flooding?
3 How did Hurricane Katrina cause a flood?
Suggested Answers:
1 Because flood waters may have damaged or destroyed them.
2 Levees are walls built around rivers. They protect a city from flooding as flood water cannot get over the wall.
3 Hurricane Katrina caused a flood by breaking more than 50 levees.