Backyard STEM & Garden SciencePatio Picnic Table or Open YardAll SeasonsEasy

Wind, Rain & Cloud Weather Activities: Cloud in a Jar & Wind Trackers

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap.

Prep Time: 20 MinutesAge: 4–11 YearsType: Atmospheric Physics & Cloud Science

Nature & Environmental Science Spotlight

The Hydrological Cycle & Cloud Condensation Nuclei

Scientific Insight

Clouds form when warm, humid air rises, cools to its dew point, and condenses around microscopic aerosol particles (smoke, dust, pollen) known as cloud condensation nuclei.

Ecological Value

Understanding how rain replenishes freshwater aquifers, rivers, and agricultural soils.

Core Takeaway: Every rainstorm begins with microscopic particles floating in cooling air.

Developmental Skills & Physical Milestones

Condensation Science Demonstration

Observing how warm humid air trapped beneath ice cubes produces fog when condensation nuclei are introduced.

Micro-Wind Current Mapping

Releasing soap bubbles to trace micro-turbulences around fences, tree canopies, and roofs.

Cloud Classification Recognition

Distinguishing puffy Cumulus (fair weather), flat Stratus (blanket rain), and wispy Cirrus (ice crystals).

Materials & Loose Parts Checklist

Gather materials from nature, your recycling bin, or household kitchen supplies before heading outdoors.

Glass mason jar with metal lid (for cloud in a jar)
Warm water & ice cubes
Aerosol hairspray or wooden match (condensation nuclei - adult use)
Bubble solution and wand (for wind tracking)
Cloud identification mirror or printable viewfinder card

Step-by-Step Play Blueprint

Follow these 5 guided steps. Let your child take the lead in modifying and experimenting with the rules as play unfolds.

Create a Real Cloud Inside a Glass Jar

Science & Observation

Pour 1 inch of warm water into a glass jar. Swirl it around. Invert the metal lid on top and fill with ice cubes. Have an adult quickly spray a 1-second spritz of hairspray inside and replace the ice lid: instantly, a thick swirling white cloud fills the jar!

Play Tip: Lift the ice lid: watch the cloud plume billow out into the room just like fog over a mountain valley!

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap. - Step 1: Create a Real Cloud Inside a Glass Jar

Visual Schematic • Step 1Science & Observation

Track Invisible Wind Currents with Bubbles

Active Exploration

Blow a stream of small soap bubbles into the yard on a breezy day. Do not pop them; watch how they rise on invisible solar updrafts, dip behind garden sheds, and trace turbulent wind paths.

Play Tip: Bubbles reveal the invisible contours of air currents that birds use to soar effortlessly.

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap. - Step 2: Track Invisible Wind Currents with Bubbles

Visual Schematic • Step 2Active Exploration

Craft a Cardboard Cloud Identification Viewfinder

Building & Assembly

Cut a 4x4 inch square window out of the center of cardstock. Glue illustrations of 4 cloud types (Cirrus, Cumulus, Stratus, Cumulonimbus) around the border.

Play Tip: Hold the window up to the sky to frame and identify today’s overhead cloud formations.

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap. - Step 3: Craft a Cardboard Cloud Identification Viewfinder

Visual Schematic • Step 3Building & Assembly

The Puddle Evaporation Time Trial

Active Exploration

After a rain shower, trace the perimeter of a driveway puddle with sidewalk chalk. Check back every hour and trace the shrinking puddle rings: calculate how fast solar heat evaporates water back into the atmosphere!

Play Tip: Compare puddles in direct hot sun vs. shaded puddles to demonstrate solar thermal energy.

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap. - Step 4: The Puddle Evaporation Time Trial

Visual Schematic • Step 4Active Exploration

Measure Rain Drop Spatter Velocity

Creative Expression

Dust a sheet of white cardstock with powdered cocoa powder or dry cornstarch. Hold outside in falling rain for 5 seconds: raindrops leave crater rings proportional to their mass and velocity!

Play Tip: Heavy storm drops create massive splash crowns, while gentle drizzle makes tiny pinpricks.

Form miniature water vapor clouds inside glass jars, build rain gauges, and track wind currents with bubble soap. - Step 5: Measure Rain Drop Spatter Velocity

Visual Schematic • Step 5Creative Expression

Outdoor Safety Guidelines & Precautions

Adults should supervise the cloud-in-a-jar experiment when using hot water or aerosol spray.

Forest School Parent Facilitation Guide

Fostering Autonomy & Calculated Risk

Weather is happening all around us every second. When children understand the physics behind clouds and puddles, rainy days become exciting science labs rather than gloomy disappointments.

More Outdoor & Garden Activities

View All 65

Backyard STEM & Garden Science