Monday, 7 May 2018

Why does a chameleon change colour?

Why does a chameleon change colour?

you ever wished you could blend in with anything? Or spook someone or disappear. If this is what you wished you were a chameleon. Chameleons are lizards and they live in Europe, North America, Africa, Asia, deserts and rain forests. They also have two eyes that can look in different directions at the same time.

Scientist used to believe that chameleons change colour to avoid their predators. But now we know that they are really fast. They can
run up to 21 miles per hour (33 KM) but scientists think that they found the real reason why chameleons change colour. They change colour to reflect their mood. They change into darker colours like black, blue, red etc... If they are angry that can also help to warn predators. Chameleons change into light colours if they want to attract a mate.

Scientists also believe chameleons change colour to change their temperature. Chameleons change into light colours if they are hot eg: green, yellow, green, pink etc… They also change into hot colours if they are cold. There are also 160 different species of chameleons amazing!

Overall scientists have now learnt that chameleons don't change colour to camouflage but to change their temperature and reflect their mood. They also have a special layer of cells called iridophores under their skin. These special cells which contain pigment and and reflect light, are made up of hundreds and thousands of guanine and crystals. They can also relax an excite there skin and change the structure. These reflect light and to create the variety of colours we see today. Does changing colour still seem cool to you?

W.A.L.T: Write an explanation.


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