The Science of Autumnal Leaves
Autumn Leaves: Nature's Colourful Countdown
Crackling underfoot, swirling in the crisp autumn breeze, leaves transform from vibrant green to fiery reds, sunny yellows, and burnished browns. Autumn's arrival paints the landscape in a breath taking display of colour, and it's the perfect time to get outside and celebrate nature's annual countdown to winter!
The Science Behind the Spectacular Show
Have you ever wondered why leaves change colour in autumn? It's all thanks to a clever trick played by Mother Nature! Throughout spring and summer, leaves are busy factories, using sunlight, water, and carbon dioxide to produce a special green pigment called chlorophyll. Chlorophyll is like a superhero for leaves, allowing them to capture sunlight and turn it into energy for the tree to grow.
But as the days shorten and temperatures cool in autumn, a fascinating shift occurs. The production of chlorophyll slows down, eventually stopping altogether. This allows other pigments, hidden within the leaves all along, to take centre stage. These pigments – called carotenoids (think orange carrots!) and anthocyanins (the same pigment that makes blueberries blue!) – create the vibrant reds, oranges, yellows, and purples we associate with autumn foliage.
Pemberton's Autumnal All-Stars
Pemberton boasts a diverse range of trees, each putting on its own dazzling autumn display. Here are a few of the local superstars:
Marri (Corymbia calophylla): This iconic Australian tree explodes with vibrant reds and oranges, making it a real showstopper. Look for its distinctive rough bark and urn-shaped gumnuts.
Karri (Eucalyptus diversicolor): One of the tallest trees in the world, the Karri puts on a more subtle autumn display. Its leaves turn a soft yellow, offering a beautiful contrast against its towering white trunk.
Sheoak (Allocasuarina fraseriana): Don't be fooled by its name – the Sheoak isn't actually an oak tree! It's easily identified by its spiky needles and distinctive "cones." In autumn, its foliage takes on a soft, golden hue.
Blackbutt (Eucalyptus pilularis): This hardy tree is known for its smooth, black bark. Its leaves turn a warm yellow in autumn, adding a gentle touch to the overall colour palette.
Leaf Scavenger Hunt: A Wildly Fun Activity!
Now that you're armed with some autumn leaf knowledge, it's time for some outdoor fun! Let's get those WILD explorers outside with a "Leaf Scavenger Hunt."
Here's what you'll need:
Baskets or paper bags for collecting leaves
A list of different leaf characteristics (see below)
Optional: A magnifying glass for closer observation
Leaf Scavenger Hunt List:
Find a leaf that is the biggest you can find.
Find a leaf that is the smallest you can find.
Find a leaf that is shaped like a heart.
Find a leaf that is shaped like a star.
Find a leaf that is red.
Find a leaf that is orange.
Find a leaf that is yellow.
Find a leaf that is brown.
Find a leaf with the most pointed tip.
Find a leaf with the smoothest surface.
Find a leaf with the roughest surface.
Bonus Challenge:
Find a leaf with a hole in it. What might have munched on it?
Creating a Nature Collage:
Once your scavenger hunt is complete, it's time to unleash your inner artist! Spread out your collected leaves on a flat surface and let your creativity flow. Here are some ideas to get you started:
Create a colourful autumn tree using leaves of different colours and shapes.
Arrange your leaves to form a picture, like a funny face or an animal.
Use leaves as a natural frame for a photo or artwork.
Glue leaves onto cardboard or paper to create a beautiful autumn-themed mobile.
Let WILD Ones Forest School Guide Your Autumn Adventure!
Autumn is a magical time to explore nature with your child. From July, WILD Ones Forest School, will offer exciting programs that take advantage of this vibrant season. Our experienced educators will guide children on nature walks, teach them about different types of trees, and help them discover the wonders of the natural world through play-based learning.
Join us for a leaf identification challenge, create stunning nature art using autumn leaves, or learn about the fascinating creatures that prepare for winter during this special time of year.
Get ready for an unforgettable autumn adventure with WILD Ones Forest School! Contact us today to learn more about our programs and let the colourful countdown to winter begin!
WILD Ones Forest School offers innovative programs that help children build resilience, confidence, and a deep connection to nature. We believe that nature is the best classroom, and our experienced educators guide children on a journey of discovery through play-based learning in a safe and supportive environment. Join our growing waitlist to secure first option for sessions.
Nature has so much to offer our children. By providing them with opportunities for outdoor exploration, we're setting them up for success in life. So lace up those boots, and get ready for an adventure! Where will your next nature play journey take you?
