Hydrology & Water Systems

Rain Falling Down

Discover Rain Falling Down as a core part of Hydrology & Water Systems. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

The Water Cycle

Water cycles between ocean, atmosphere, land, and underground. Powered by the sun, it never stops.

Aquifers and Groundwater

Underground rock layers can hold huge amounts of water. Aquifers are vital to agriculture and drinking water — but they can be depleted.

Where Does Rain Go? The Journey From Puddle to Pond

Discover Puddles And Ponds as a core part of Hydrology & Water Systems. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Frogs Both Places

Discover Frogs Both Places as a core part of Hydrology & Water Systems. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.

Wells Underground

Discover Wells Underground as a core part of Hydrology & Water Systems. This lesson explains what it means, walks through a real example, introduces key terms, and includes three hands-on activities to help you understand and apply the idea.