Page 170 - New Medley 3 Semester 2

Competencies
C-2.1, C-4.4, C-4.7

• Critical Thinking
• Problem Solving
• Hands-on Learning
21st CENTURY SKILLS • Creativity
• Art-integrated Learning
2 Air and Water
• Collaboration

Warm Up • Critical Thinking

All living beings need air and water. Air is present everywhere
but we get water from different sources. Can you name the

source of water shown in the picture?

AIR AROUND US

Air is present all around us. We cannot see air because it has no colour. Also, it

does not have smell or taste. But we feel it when it blows.

Air forms a thick layer around the Earth. is layer is called the atmosphere.

Moving air is called wind. Wind makes things move. A
gentle movement of wind is called a breeze. A strong

movement of wind is called a storm.

What is air made up of

Air is a mixture of many gases. ese gases are mainly

nitrogen, oxygen, carbon dioxide and water vapour.

Air also contains smoke, dust particles and germs in it.
Breeze

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