What will you discover?
Nila follows a raindrop from the sky into the ground and back again.
Key takeaways
- The water cycle moves the same water round and round forever.
- Soil, parks and ponds act as sponges for a city.
- Hard surfaces cause both flooding and empty wells.
- Rainwater harvesting sends roof water back into the ground on purpose.
Questions this video answers
Why do cities flood so fast?
Concrete and tar stop rain from soaking in, so all of it rushes to the drains at once.
How does groundwater get refilled?
Only when rain soaks through open soil, ponds and recharge pits into the layers below.
Take the learning further
After rain, walk around your building and find one place water soaked in and one place it ran off. Which is bigger?
