E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Activities for Assessment
E Doris James Science Solutions for Exercise - E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Activities for Assessment
Attempt the free practice questions from Exercise 4: Activities for Assessment with hints and solutions to strengthen your understanding. New Science Ahead solutions are prepared by Experienced Embibe Experts.
Questions from E Doris James, Vandana Tirath, Anton Siromani and, Kiran Banerji Solutions for Exercise 4: Activities for Assessment with Hints & Solutions
The heating of air by sunlight is an important cause of weather changes. Find out more about this and write a report.

What are expansion and compression?

Classify the changes given below as physical, chemical, reversible or irreversible changes.
Evaporation of alcohol, chewing of food, expansion of air, photosynthesis, melting of butter on toast, digestion of food, burning a piece of wood, decomposition of organic matter, cutting vegetables, cloud formation, pulling copper into a thin wire, mixing solid sulphur and iron filings, tarnishing (darkening) of jewellery.
