Materiały do lekcji o jesieni

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Autumn is one of four seasons that occurs from roughly September 21 through December 21.

It is more commonly known as „fall” because the leaves fall off of deciduous trees during the season.

Autumn is not only a wonderful time of year with crunchy, colorful leaves and cooler weather, but it is also a great time to learn some new autumn facts for kids. When you think of autumn, you probably think of cooler weather, going back to school, Halloween and falling leaves, but what else do you know about the season?

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Leaf Facts

Think you know everything there is to know about leaves? You may be surprised to learn the following facts:

  • Leaves require sunlight, water, chlorophyll and carbon dioxide to make food for themselves.
  • As winter approaches, leaves make a coating for themselves which blocks their water source; in the absence of water, the leaves no longer produce chlorophyll (chlorophyll is what makes leaves green).
  • When the leaves turn colors in the fall, they actually are returning to their normal colors. During the summer months, the chlorophyll present in the leaves causes the leaves to turn green, blocking the leaves’ actual colors.
  • Along with chlorophyll, leaves contain two other chemicals that cause coloring. The first is called xanthophyll, which is yellow in color. The other is carotene, which is orange in color.
  • Red and purple leaves are actually caused by the presence of sugars from sap that is trapped inside of the leaves.
  • Once the leaves have turned brown, they are dead and no longer receive any nutrients.

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