States Of Matter

-NOTES- YEAR 5/2009 STATES OF MATTER

FACTORS THAT AFFECT THE RATE OF EVAPORATION OF WATER •

Movement of air

: Water evaporates faster in windy conditions

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Temperature of the surroundings

: Water evaporates faster in hot weather.

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Humidity

: Water evaporates faster when it is less humid

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Exposed surface area

: The larger the exposed surface area of water, the faster it evaporates

WATER RESOURCES •

Water in important to all living things : for washing, drinking, bathing and more

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Water is home to many living things

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Water is needed to carry out many life processes.

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Water is also used in food industries

WHAT WILL HAPPEN IF WATER IS POLLUTED •

When water get polluted, the quality of drinking water becomes poor

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The water contains harmful substances and bacteria that affects our health

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The oil spills cover the water surface, this prevents oxygen from dissolving in water and soon the water living things will face extinction.

WHAT WE CAN DO TO PROTECT THE WATER RESOURCES? •

Build factories far from rivers

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Avoid throwing rubbish into the river

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Treating the sewage from houses or industrial then release into the river Prepared by: MR.R.SUDHEEP GURU PENYELARAS BESTARI, SJKTSB

-NOTES- YEAR 5/2009 •

Keep rivers and lake clean

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Do not pour hazardous substance into drains, rivers and lakes

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Recycle paper, plastic, glass and metals

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Conserve water

Prepared by: MR.R.SUDHEEP GURU PENYELARAS BESTARI, SJKTSB