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seeds

Exploring Seed Activity: How To Do A Sinking Seed Experiment

September 16, 2025 | Leave a Comment
This post may contain affiliate links. For more information, please see my full disclosure policy.

We’re doing a fun and easy seed activity today. Also, look at this post Easy Seeds and Gardening Unit Study for Kids (Middle – Upper Elementary)

Simple hands-on science experiments with nature spark fun and curiosity. And the best thing about this simple seed activity is that you probably have most of these supplies at home already.

This easy activity not only teaches kids about seeds and plant biology, but also develops key skills in observation.

Exploring Seed Activity: How To Do A Sinking Seed Experiment

In this sinking seed experiment kids will test different types of seeds by placing them in water.

Your child makes a guess if the seed will sink or float. Of course, you will want your child to record his results.

Further, you want to engage your child about why some seeds and others float.

BOOKS ABOUT SEEDS FOR KIDS

Next, add some of these seed books to your home library.

5 Fun Books About Seeds

Children of all ages love activities about seeds. Add a few of these books to your learning day or use as a unit study.

A Seed Is Sleepy: (Nature Books for Kids)

This gorgeous book from award winning artist Sylvia Long and author Dianna Hutts Aston offers children a beautiful and informative look at the intricate, complex, and often surprising world of seeds. Poetic in voice and elegant in design, the book introduces children to a fascinating array of seed and plant facts, making it perfect reading material at home or in the classroom.

Seeds Move!

Every seed, big or small, needs sunlight, water, and an uncrowded place to put down roots. But how do seeds get to the perfect place to grow? 

A Seed is the Start

Meet seeds that pop, hop, creep, and explode in this vividly illustrated introduction to the simplest concepts of botany. 

From Seed to Plant

With simple language and bright illustrations, non-fiction master Gail Gibbons introduces young readers to the processes of pollination, seed formation, and germination.

Go Seed, Grow!

Through wind, drought, fire, and water, a seed can be one of the most tenacious miracles on the planet. A seed is life, and life always finds a way. Follow how a seed magically beats the odds time and time again, to transform the world. 

Now, look at some other fun seed activities for kids.

MORE SEED ACTIVITIES

  • Fun Kids Activity How to Make Wildflower Seed Bombs
  • How to Easily Make Fun Seed Tape With Kids
  • Easy Seeds and Gardening Unit Study for Kids (Middle – Upper Elementary)
  • Make Fun Seed Slime
  • Two Yummy Pumpkin Seed Recipes
  • Watermelon Seed Slime
  • Growing a Seed Activity For Kindergarten Science Kids Activity
Exploring Seed Activity: How To Do A Sinking Seed Experiment

Finally, look at how to do this easy sinking seed experiment.

SINKING SEEDS EXPERIMENT

Look at this easy list of supplies.

  • A clear jar
  • Water
  • A variety of fall seeds: apple seeds, pumpkin seeds, sunflower seeds, and acorns.

Gather seeds. Collect different fall seeds such as apple, pumpkin, sunflower, and acorns.

Exploring Seed Activity: How To Do A Sinking Seed Experiment

Make predictions. Ask kids to guess which seeds will float and which will sink.

Fill the jar. Pour water into a clear container so the results can be seen clearly.

Test the seeds. Drop each seed into the water one at a time. Watch carefully to see if it floats on the surface or sinks to the bottom.

Talk about it. Discuss why some seeds float while others sink. (For example, lighter seeds or ones with air inside may float, while heavier ones usually sink.)

Extend the fun. Try the same experiment with other fall items like corn kernels, leaves, or pinecones.

BENEFITS OF THE SEED SINKING EXPERIMENT

  • Hands-on Learning – Encourages exploration of nature and everyday items.
  • STEM Skills – Builds early science understanding through observation, prediction, and testing.
  • Critical Thinking – Teaches kids to compare predictions with results and think about “why” something happened.
  • Curiosity & Discovery – Sparks excitement for simple experiments and builds a love of learning.

Leave a CommentFiled Under: Hands-On Activities Tagged With: hands-on, hands-on activities, handson, handsonhomeschooling, life science, science, seeds

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