23 thg 6, 2010

Darwin's Finches



We'll look at pronouncing 's' on the end of words and discover what pride of place means.

Australia is known for its unique, even bizarre animals. But far away in the Galapagos Islands is a collection of animals that's equally unusual

Something that is bizarre is strange. So what are these strange animals?

You have tortoises with very round shells and high shells or flatter shells. And they can be found on either high or low islands. The boobies - some boobies have blue feet and others have red feet. The iguanas - on some islands they are very dark and on others they look like Christmas trees.

Tortoises - Notice that the final 's' is pronounced 'uz' - tortoises.

The final ;s' is always pronounced like this when it follows an ;s' sound: tortoise/ tortoises, kiss/kisses.

The ;s' is also pronounced 'uz' when it follows a ;ch' sound, such as in finch. Listen:
But Darwin's finches take pride of place.
Finch. finches. Plurals of words that end with 'ch' are spelled 'e-s' and pronounced 'uz'.
  • church/ churches
  • match/ matches
Now, what did those finches take?
But Darwin's finches take pride of place.

Pride of place means they are the most important. So why are these finches so important?
These little birds are related, but differ in their beaks and behaviour depending on where they are found. They helped Charles Darwin develop his theories of evolution. And since then, scientists all over the world have studied them to understand how species evolve.
And where are these birds found?

The Galapagos Islands are a group of volcanic islands off of the coast of South America. They've never been connected to the mainland, which makes them very special. There are about 50 islands. They vary in size. And islands are fantastic places to observe evolution happen because they are geographically separate and each island and each area is somewhat different. And so the animals become adapted to those particular conditions

Galapagos Islands. Notice again that the final 's' on these words are slightly different. Galapagos - a clear 's' sound. Islands - a 'zz' sound. Listen again:
The Galapagos Islands are a group of volcanic islands off of the coast of South America.

Now listen carefully for the difference in the ;s' pronunciation on the words boobie and tree:
The boobies - some boobies have blue feet and others have red feet. The iguanas - on some islands they are very dark and on others they look like Christmas trees.

Boobies - a 'zz' sound. Trees - again a 'zz'. The Long vowel sounds AEIOU are followed by the 'zz' pronunciation: A 'plays'; E 'trees'; I 'flies'; O 'potatoes'; U 'glues'

Now listen for the ;s' on Iguana:
The iguanas - on some islands they are very dark and on others they look like Christmas trees.
Iguanas - a 's'. Short vowels - a i e o u are followed by 's' - o 'Galapagos'; i - 'this'; e - 'yes'; a - 'mass'; u 'fuss'. Iguanas

So there are 3 ways of pronouncing the final 's' 'uz' as in, ;places' 'tortoises' and 'finches':
'zz' as in 'trees' or 'Boobies'
And 's' as in 'Galapagos':
We'll leave the last words to the scientist:

Visiting the Galapagos is transformational to anybody who goes there. And yet the very act of visiting it is actually changing it and may ultimately lead to the extinction of what we treasure on those islands.

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