Kw-logo-smaller

Why Do Leaves Change Color?

The arrival of fall brings cool new back-to-school clothes, the return of football and hockey and beautiful chameleon leaves. Are trees as fashion conscious as the celebs or is there more to this color change? Kidzworld finds out!


Autumn Leaves - Photosynthesis

Photosynthesis is the process of turning light energy into chemical energy by storing it as sugar. During the spring and summer, trees can make plenty of food because of the long hours of daylight. The process of photosynthesis takes place in the chloroplasts (food making centers), specifically using chlorophyll (the green pigment involved in photosynthesis).


Autumn Leaves - Goodbye Green Trees

During winter, there's not enough water or light for photosynthesis to take place. The trees have to live off the food they stored during the summer. The food-making factories start shutting down and the green chlorophyll disappears from the leaves. When the bright green fades away, the yellow and orange colors - that have always been underneath - begin to show. They've been there all along they've just been covered up by the green chlorophyll. Eventually even those colors fade and the brown leaves start to drop off.


Autumn Leaves - Did U Know?

  • The best places to see vibrant autumn leaves are in the eastern United States and in southeastern Canada.
  • One large tree can lift up to 100 gallons of water out of the ground and discharge it into the air in one day.
  • Trees first appeared on Earth long before the dinosaurs did - about 400 million years ago.
  • Trees combat the greenhouse effect and slow the effects of global warming. They soak up carbon dioxide and exhale oxygen for us to breath.
Related Stories
13 Comments

latest videos

F1127166965937

Fave Leaf Color? Vote

  • Green.
  • Orange.
  • Red.
  • Who has a favorite color leaf?

related stories

Micro_fall micro
If there is one positive thing about the summer coming to an end it is that the beautiful season ...
Micro_equinox_micro
You can tell it's the beginning of fall when the leaves begin to change, the air feels a bit cris...
Are you a poet? Want to see your poems published? Sent them in. This reader did and now all of yo...
Micro_moonfest_micro
The Chinese start preparing for Mid-Autumn Festival weeks in advance. The holiday is all about th...

Random in the forums

KingShawn13
9:23 PM (My birthday in time form)
reply 4 minutes
KingShawn13
KingShawn13 posted in General:
"-Gwen9--" wrote:I know Kingshawn13 :(  Not funny :D
reply 15 minutes
KingShawn13
KingShawn13 posted in General:
Why that specific time?
reply 20 minutes
-Gwen9--
-Gwen9-- posted in General:
Question is, can I get to a 1000 forum posts by 9 pm ET ttomorrow?
reply 28 minutes
-Gwen9--
-Gwen9-- posted in Food:
Kit-Kats I'm allergic to Reese's.
reply 38 minutes

play online games