Tree ring dating for kids
Use that office closet for more than storing old yearbooks.Tree Ring eliminates waste by only printing as many books as ordered, but we also go one step further: we plant a tree for every yearbook sold.In general, wide rings indicate good conditions for growth (plenty of nutrients, water and sunshine).Narrow rings often indicate less favourable conditions (drought, cold, insect damage, disease, competition and lack of nutrients).Examining ancient trees helps scientists get an amazing picture of Earth’s life, for trees are a record of their life time.By looking closely at the rings of a tree, scientists can not only tell how old it is; they can also tell you that in one summer in 1453 and again in 1601, there were freak cold spells.Tree rings provide clues about the climate, and evidence of disturbance around the tree such as fires and floods.
These interesting facts come from the ‘Woodpecker volume 2000’, an annual compilation on the state of the planet, published by the Academy of Mountain Environics, an NGO based in Dehradun, in north India.Every growth season, a tree adds a new layer of wood to its trunk.Each ring has two parts – a wide, light part and a narrow, dark part.About 4,600 years old, it is nicknamed ‘Methuselah’, after the ancestor of Noah who is said to have lived for 969 years.
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The age of the tree has been estimated by counting the number of its growth rings.
Tree rings, when radiocarbon-dated give a glimpse of certain aspects of prehistoric times. Radiocarbon dating involves measuring the amount of carbon-14 that remains in a fossil.
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