The mustard seeds rolled down the sloped paper, similar to how water flows downhill. Their movement showed how rivers start from high places and travel downward, influenced by land shapes and slopes. Class 5 NCERT EVS Our Wondrous World Chapter 1 ...
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Condensation causes water droplets to form on a cold glass. Water vapour from warm air touches the cold surface, cools down, and turns back into liquid droplets on the outside of the glass. Class 5 Our Wondrous World – The World ...