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प्रश्न
What are man-made changes ?
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उत्तर
Man-made changes are those that occur because of human activities e.g. changing the direction of flow of a river by building a dam.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Tick the most appropriate answer.
3. Physical changes are
- permanent.
- periodic,
- temporary
- irreversible.
Classify the following changes as physical or chemical:- melting of a solid (wax)
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Which of the following are physical changes and which are chemical changes ?
Select the chemical changes from the following list of changes
Breaking of glass
Filling up a balloon with hot air is a _______ change.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Which of the following is a physical change?
Explain the characteristics of physical change with examples.
