Page 216 - New Medley 4 Semester 2 PDF (Merged)

Competencies
C-4.3, C-5.1
• Analysing
• Hands-on Learning
• Remembering
• Understanding
21st CENTURY SKILLS • Critical Thinking
3 Water • Health and Well-being
• Communication
• Creativity

Warm Up • Analysing

In nature, water is found in solid, liquid and gaseous forms.
In which form is water on the leaves in the picture?

THE THREE STATES OF WATER

We all drink water. Water covers about two-thirds of the Earth’s surface. It is
found in three different states or forms. These states are solid, liquid and gas.

 Ice is the solid state of water.

 Water that we drink is in liquid state.

 Water vapour is the gaseous state of water.

Water can easily change from one state to another.

Evaporation

The change of the liquid state of water into the gaseous state on heating is called
evaporation. The gaseous form of water is called water vapour. Evaporation takes

place from the open surface of water. Oceans, rivers, ponds, wet clothes and

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