Class 9 – Winter Holiday Homework (Science) 2025
Biology (5 Questions)
1. What is a cell? Why is it important for living organisms?
2. Write any two differences between prokaryotic and eukaryotic cells.
3. Draw a neatly labeled diagram of a plant cell and an animal cell.
4. What is a tissue? Name any two types of tissues.
5. Why is the mitochondria called the “powerhouse of the cell”?
Physics (5 Questions)
6. What is motion? Give one example from daily life.
7. Differentiate between distance and displacement.
8. What is the difference between speed and velocity?
9. Define uniform motion and non-uniform motion.
10. Draw a simple distance–time graph and explain it.
Chemistry (5 Questions) – Atoms and Molecules
11. State the law of conservation of mass with one example.
12. What is an atom? Why are atoms very small in size?
13. Define a molecule. Differentiate between a molecule of an element and a molecule of a compound.
14. What is atomic mass? How is it expressed?
15. Write the chemical formula of the following compounds:
a) Calcium oxide
b) Aluminium sulphate
c) Sodium chloride
No comments:
Post a Comment