ONLINE INTERACTIVE: SEED SCIENCE ACTIVITIES

ONLINE SEED SCIENCE

How Seeds Travel

This page is your friendly, visual guide to the four big ways seeds move in the world—by wind, water, animals, and bursting pods. Use it for a quick class intro, a family learning moment at home, or as an extension to our seed bomb lab.

Go to the Seed Bomb Chemistry Lesson Try the “Match the Method” Challenge

Photo by Pixabay — Dandelion seeds drifting in the wind.

🌬️ Wind 🌊 Water 🐾 Animals 💥 Bursting Pods 🧪 Back to Seed Bombs 🎯 Match Challenge 🗂️ Vocabulary 💬 Share Results

🌬️ Wind Dispersal

Wind-dispersed seeds are often light, fluffy, or winged. Their whole goal is to catch air like a tiny parachute or helicopter and drift away from the parent plant.

Photo by Kelly — Maple “helicopter” seeds are built to spin and glide.

Photo by Pixabay — Fluffy seeds act like tiny parachutes.

Try this (quick prompt): If a seed needs to travel far on the wind, what would be better—heavier or lighter? What might the trade-off be?

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🌊 Water Dispersal

Water-dispersed seeds are often built to float—with tough outer layers or air spaces that help them travel along streams, lakes, or ocean currents. Some can survive a long journey before landing somewhere new.

Photo by Matthew Baxter — Coconuts can float and travel long distances.

Photo by Kristina Kutleša — Seeds can move across water and settle on new shores.

Try this (quick prompt): If a seed is traveling by water, what dangers might it face? (Think: waves, sinking, saltwater, animals.)

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🐾 Animal Dispersal

Animals help seeds travel in two big ways: (1) hitchhikers that stick to fur or clothing, and (2) snack-and-scatter seeds that move when animals eat fruit and carry seeds away.

Photo by studio speets — Burrs use hooks to catch a ride.

Photo by Skylar Ewing — Fruit invites animals to help spread seeds.

Try this (quick prompt): Why would a plant “want” an animal to eat its fruit? What does the plant get out of that deal?

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💥 Bursting Pods (Mechanical Dispersal)

Some plants pack seeds into pods that split or pop open when mature. That sudden opening can fling seeds away from the parent plant—sometimes with surprising force.

Photo by R Khalil — Pods open when seeds are ready to travel.

Photo by Alexa Heinrich — When pods open, seeds can be released all at once.

Try this (quick prompt): Imagine a pod opens during a dry, windy day vs. a rainy day. How might the weather change what happens to the seeds?

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🎯 Match the Method Challenge

Look at the four images below (A–D). Which dispersal method fits each one best? You can answer out loud, write it down, or talk it through as a group.

A

Photo by Kelly — Maple seeds.

B

Photo by Matthew Baxter — Coconut floating.

C

Photo by studio speets — Burr hitchhiker.

D

Photo by R Khalil — Pod opening.

Click to reveal the answers

A: Wind (winged “helicopter” seed)
B: Water (floats)
C: Animals (hitchhiker burr)
D: Bursting / mechanical (pod opens to release seeds)

Extension question: Which one do you think could travel the farthest—and why?

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🗂️ Vocabulary Cards

Click a card to “flip” it. These words show up a lot in seed science and in our Seed Bomb Chemistry lab. (Teachers: you can use these as a warm-up, exit ticket, or quick review.)

Seed dispersalBIG IDEA

Meaning: How seeds move away from the parent plant to start new plants somewhere else.
Example: A dandelion seed floating on the wind.

Wind dispersalWIND

Meaning: Seeds travel by air. They’re often light, fluffy, or winged.
Example: Maple “helicopter” seeds spinning as they fall.

Water dispersalWATER

Meaning: Seeds float or drift in water until they land somewhere new.
Example: A coconut floating to a new shoreline.

Animal dispersalANIMALS

Meaning: Seeds move with animals—by sticking to fur/clothes or by being carried after fruit is eaten.
Example: Burrs hitching a ride on a dog’s fur.

HitchhikerANIMALS

Meaning: A seed that sticks to fur, feathers, socks, or shoelaces to travel.
Example: A prickly burr stuck to a pant leg.

PodPLANT PART

Meaning: A plant “container” that holds seeds (like peas or milkweed).
Example: A pea pod with round peas inside.

Mechanical dispersalBURST

Meaning: Seeds are released when a pod dries and pops/splits open.
Example: A pod opening and scattering seeds nearby.

GerminationGROWTH

Meaning: When a seed starts to grow into a new plant (it sprouts).
Example: A seed cracking open and sending out a tiny root.

RatioMATH

Meaning: A comparison of amounts. In our lab, it’s how much of each ingredient we mix.
Example: 2 parts clay : 1 part soil.

VariableSCIENCE

Meaning: Something you change (or measure) in an experiment.
Example: Changing the clay-to-soil ratio is changing a variable.

Quick review game: Ask a partner to choose a card. Read the definition without saying the word — can you guess it?

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🧪 Back to Our Seed Bomb Lab

Seed bombs are a human-made way to help seeds get started—especially in places where soil is bare or hard-packed. But just like real seeds, the “design” matters. A seed bomb that’s too fragile might fall apart too soon, and one that’s too tough might not break down when it needs to.

Photo by congerdesign — Seed bombs made from clay and soil.

Friendly “design thinking” prompts

• If it cracked too fast: What could you add or change to make it hold together longer?
• If it never cracked: What could you change so water can get in and break it down?
• If it cracked unevenly: What might that say about mixing or compaction?
• Big idea: Real seeds have “design features” too—fluff, wings, floaty shells, hooks, or pods.

Want the full activity?
Open the Seed Bomb Chemistry lesson here

Multi-age idea: Let Sprouts describe what they notice (“soft,” “crumbly,” “smooth”). Let Seedlings predict what will happen next. Let Growers test ratios, record data, and explain results with evidence.

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💬 Share your results (teachers + families)

If you try this activity, I’d love to hear what you discovered. You can share a quick note (or photos) in the comments on the main lesson post: Seed Bomb Chemistry: The Science of Dispersal

Easy comment starter:
“We tested a ___ : ___ ratio and found that ________. We think that happened because ________.”