How water is used in the body.

What percentage of our body is made up of water?

• 10-15%

• 30-45%

• 55-70%

• 80-85%

What happens if you do not drink enough water?

• You might feel full of energy.

• You might feel tired and get a headache.

• Your fingers and toes may hurt.

• You might get earache.

Which of these is NOT a way we lose water from the body?

• Scratching.

• Going to the toilet.

• Sweating.

• Breathing (respiration).

When should you drink extra water?

• After you have done a maths test.

• When you wake up in the middle of the night.

• Before you go to bed.

• After you have done some exercise.

How much water should an adult drink every day?

• 6-8 glasses.

• 10-12 glasses.

• 3-5 glasses.

• 1-2 glasses.

How much of our brain is made up of water?

• 15%

• 45%

• 60%

• 75%

How does water help our bones?

• It lubricates joints, helping with joint movement.

• It keeps them straight.

• It helps them stay hard.

• It keeps them clean.

Which of the following does NOT require water?

• Regulation of body temperature.

• Movement of oxygen around the body.

• Removal of waste products from the body.

• The ability to hear.

On average, how many litres of water does a human body lose each day?

• 6 litres.

• 1 litre.

• 3 litres.

• 4 litres.

If you don't drink any water, how long does it take to show symptoms of severe dehydration?

• 1 week.

• 5 days.

• 3 weeks.

• 3 days.