< Go to Droplets Introduction

Grades 6-8


Evaporation – When a liquid turns into a gas.

Condensation – When a gas turns into a liquid.

Precipitation – Water that falls to the ground – rain, snow, hail.

Collection – Where water is collected (ocean, streams, lakes, rivers).

Aquifer – A Body of rock and or sediment that holds ground water.

Ground Water – Precipitation that has seeped into the ground.

Surface Water – Water that is found of the earth’s surface.

Freshwater – Water that has a low concentration of minerals, salts and dissolved solids.

Saltwater – Water that has a high level of dissolved salt.

Hydrogen – A chemical element with two atoms that make up water.

Oxygen – A chemical element with one atom.

Runoff – Precipitation that does not seep into the ground.

Reservoir – A place where water is collected and stored for use.


Earth’s Water Cycle (Earth’s Cycles in Action) by Diane Dakers

Exploring Earth’s Water Cycle (Spotlight on Weather and Natural Disasters) by Emily Donovan

The Water Cycle (Watts Library: Earth Science) by Trudi Strain Trueit

The Water Cycle (Cycles in Nature) by Theresa Greenaway

Water Cycle Book, “Water Source of Our Life” by Eman Publishing