What Causes Flash Floods?
Flood Safety & Weather Science for Kids (Ages 3–11)
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In this exciting weather episode of Orbit: Science for Kids on the Move, kids investigate floods and flash floods with Nichole Cronce, a hydrologist at the National Weather Service.
Through fun storytelling, hands-on science examples, and real questions from kids, listeners learn how heavy rain, rivers, soil, gravity, and cities all work together to create floods. Nichole explains why flash floods can happen so quickly, how scientists predict dangerous flooding, and what families can do to stay safe.
This episode introduces important Earth and weather science concepts while helping kids understand emergency preparedness, environmental science, and how hydrologists use technology and data to protect communities from dangerous weather.
Episode Vocabulary
Build science language while you listen!
Flood: Water overflowing onto land that is usually dry
Flash Flood: A fast-moving flood that happens very quickly after heavy rain
Hydrologist: A scientist who studies water, rivers, and floods
Meteorologist: A scientist who studies weather
Runoff: Rainwater that flows over the ground instead of soaking in
Gravity: The force that pulls water downhill
River Flooding: Flooding caused when rivers overflow their banks
Coastal Flooding: Flooding caused by ocean water moving onto land
Forecast: A prediction about future weather
Flood Warning: An alert that flooding may happen soon
Children’s questions in this episode
Submit questions for upcoming episodes here.
What is a flood?
What is a flash flood?
What are the different types of floods?
What causes floods?
How does a flash flood happen?
Why do some places flood more than others?
Why do cities flood faster than forests or fields?
What is runoff?
Why does water flow downhill?
How do scientists predict floods?
What tools do hydrologists use?
After listening: conversation starters
Have you ever seen flooding or very heavy rain where you live?
Why do you think concrete and roads make flooding worse?
What would your family include in a flood safety plan?
About the expert
Nichole Cronce is a hydrologist with the National Weather Service who studies rivers, rainfall, and flooding to help predict dangerous weather and keep communities safe.
Why STEM Podcasts for Kids?
Research shows that podcasts like Orbit: Science for kids on the move! help kids build early STEM identity while sparking curiosity and imagination about the world around them. By hearing real experts and big questions, children begin to see themselves as scientists.
They also offer engaging, screen-free entertainment—perfect for car rides and on-the-go learning—while growing science vocabulary, strengthening critical thinking, and introducing kids to real-world STEM careers in a fun, accessible way.