On average, how many liters of water does each person consume per day?, 50 litres, 100 litres, 150 litres, 300 litres, How much of the Earth is covered by water?, 30%, 50%, 70%, 90%, How much of Earth's water is fresh water?, 1%, 3%, 10%, 25%, Of this 3% NOT salty water, a large portion is locked up in ...., ice, glaciers, ice and glaciers, rocks, What does "polluted" mean?, clean, dirty or harmful, cold, safe, What is a "contaminant"?, clean water, A type of filter, something that makes water dirty, a bottle, Which of the following is NOT a contaminant?, soil, sand, tissue, clean water, What is the purpose of a filter?, to make water dirty, to remove contaminants, To add chemicals, To heat water, Which material filters the largest pieces first?, Cotton wool, Sand, Rocks, Paper, Which material should be at the bottom of the filter?, Rocks, Sand, cotton wool, Water, What happens when some subtsances dissolve in water?, They become bigger, They disappear completely, They cannot be filtered easily, They turn into rocks, How much water do adults need to drink every day?, 1 litre, 2 liters, 3-5 litres, 10 litres, Why is clean water a problem in some places?, There is too much water, Water is too expensive, There is pollution and not enough clean water, People don't like water, What should you do when pouring water into the filter?, Pour quickly, Shake the bottle, Pour slowly, Throw it, What is the best order of materials in a filter (top to bottom)?, Cotton -sand-rock, Rock - Sand - Cotton Wool, Sand - Cotton - Rocks, Water rock Cotton, What can we do to improve the filter?, Use fewer materials, Pour faster, Use different materials or filter again, Do nothing

WATER FILTER

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