Science

Autumn 1

This half term we are learning all about Carl Linneus and the way classification is used today.

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This term, the children  in 6CH will be learing all about The Heart. What is the role of the heart? 

What if our blood always circulated at the same speed?

Fascinating facts about blood

1. Is blood all the same colour?                            (Not exactly! Oxygenated blood is bright red and deoxygenated blood is dark red)

2. How long does a red blood cell live for?           (4 months)
3. How many blood types do you think cows have?                       (800)
4. How much blood do you have inside you at any one time? (about 7% of your total weight, so an average adult has about 9 pints or 5 litres)
5. How much blood do blood donors give at any one time?     (500ml or 10% of their blood)
6. How many miles/kilometres of blood vessels does a person have?     (59,962 miles/96,500km – over 2 times round the world!)
7. How many blood cells does a drop of blood contain? (Millions of red blood cells & 7 to 25 thousand white blood cells (increases if you have a bad 
infection.

  Arteries, any of the tubes through which blood flows from the heart around the whole body.

Nutrients,a substance that provides nourishment.

Nerves, Fibres in the body that transmit impulses of sensation between the brain or spinal cord and other parts of the body.