Floods Lecture Review

Flashcards to review key concepts about floods from the lecture.

What is a key factor that contributes to floods?

Heavy rain, impermeable rock, steep land, and tributaries

What happens when water overflows the river's channel?

Floods occur.

What is a flash flood?

A sudden flood caused by a burst of heavy rain.

How does melting snow contribute to floods?

When a lot of snow melts quickly, it can cause floods.

What is impermeable rock's role in flooding?

Impermeable rock prevents rain from soaking through the ground.

How does steep land contribute to flooding?

Rain runs down a steep slope quickly before soaking into the soil.

What is a tributary's role in flooding?

The more tributaries a river has, the greater the chance of flooding.

How do trees help prevent flooding?

Trees help rainwater soak into the ground, and their roots help water spread underground.

How do built-up areas like concrete and roads contribute to flooding?

Concrete and roads don’t let rain soak into the ground, causing water to run into drains and rivers.

True or False: Heavy rain the only cause of floods.

False

True or False: Cutting down trees reduces flood risks.

False

True or False: A lot of melting snow can cause floods.

True

True or False: Afforestation will cause floods

False

True or False: Concrete and roads will let rain soak into the ground.

False