Listen, watch, sing and have fun!!!
Let's revise!!
How many layers has the Earth got?
The Earth has got three layers: the atmosphere, the hydrosphere and the geosphere.
What is a special characteristic of planet Earth?
It has got air. Air is necessary for living things to breathe.
What is the atmosphere?
It is the layer of air that surrounds Earth.
The composition of air
Let's carry out an experiment!!!
Can you see air?
Has air got weight?
In this experiment, we learn that air has weight and take up/ occupy space.
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