Tuesday 15 March 2011

The Colours of Ayers Rock

Uluru is famous for it's amazing range of colours. The colour changes have more to do with the effects the earth’s atmosphere has on the sun’s rays than with the geological make-up of the rock. When the sun is low in the sky the atmosphere acts as a giant prism, splitting the sun’s rays into a colour spectrum. 

A video showing the changing colour of Ayer's Rock

The light reaching Uluru (and also the nearby Kata Tjuta National Park) near sunrise and sunset is mainly from the RED end of the spectrum and its reflection from the rock gives the spectacular colour. The reddish-brown colour of the rocks and surrounding sands enhance these effects.

Uluru's range of colours

HOMEWORK: Have a look above at the following video about the colours of Uluru.
What have you learnt from this video? 
What sorts of colours can Uluru change to?
What is the natural colour of the rock? You might have to use the internet to research this answer.
Type your answers in a comment to Miss Ingram & Mrs Zomer on this post.

Hello Grade 4's, 
Isn't this video of Uluru brilliant! Your aboriginal paintings were astounding and we were very impressed with all of the bright colours and fabulous ideas.
See you tomorrow,

Miss Ingram & Mrs Zomer


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