Question Paper
Class / Subject: Class 7 (ICSE) · Science
Chapter: Chapter 5 — Chapter 5: Heat
Time Allowed: 32 minutes
Max Marks: 16
1. Which direction does heat flow? [1]
(A) From hotter to colder objects
(B) From colder to hotter objects
(C) It doesn't flow
(D) Randomly in any direction
2. What is thermal equilibrium? [1]
(A) When both objects reach the same temperature
(B) When one object is always hotter
(C) When heat stops existing
(D) When objects freeze instantly
3. What is conduction? [1]
(A) Heat transfer through direct contact
(B) Heat transfer through empty space
(C) Heat transfer through liquid movement
(D) No heat transfer
4. What is convection? [1]
(A) Heat transfer through movement in liquids/gases
(B) Heat transfer through direct contact
(C) Heat transfer through empty space
(D) No heat transfer
5. What is radiation? [1]
(A) Heat transfer through space, like sunlight
(B) Heat transfer through direct contact only
(C) Heat transfer through liquid movement only
(D) No heat transfer
6. What happens to most materials when heated? [1]
(A) They expand
(B) They contract
(C) They disappear
(D) Nothing happens
7. What uses the expansion property of materials? [1]
(A) Thermometers
(B) Only clocks
(C) Only computers
(D) Nothing uses it
8. Why study heat transfer? [1]
(A) To explain cooking and design heating systems
(B) No reason
(C) It's not useful
(D) Only for tests
9. Which direction does heat flow? [1]
(A) From hotter to colder objects
(B) From colder to hotter objects
(C) It doesn't flow
(D) Randomly in any direction
10. What is thermal equilibrium? [1]
(A) When both objects reach the same temperature
(B) When one object is always hotter
(C) When heat stops existing
(D) When objects freeze instantly
11. What is conduction? [1]
(A) Heat transfer through direct contact
(B) Heat transfer through empty space
(C) Heat transfer through liquid movement
(D) No heat transfer
12. What is convection? [1]
(A) Heat transfer through movement in liquids/gases
(B) Heat transfer through direct contact
(C) Heat transfer through empty space
(D) No heat transfer
13. What is radiation? [1]
(A) Heat transfer through space, like sunlight
(B) Heat transfer through direct contact only
(C) Heat transfer through liquid movement only
(D) No heat transfer
14. What happens to most materials when heated? [1]
(A) They expand
(B) They contract
(C) They disappear
(D) Nothing happens
15. What uses the expansion property of materials? [1]
(A) Thermometers
(B) Only clocks
(C) Only computers
(D) Nothing uses it
16. Why study heat transfer? [1]
(A) To explain cooking and design heating systems
(B) No reason
(C) It's not useful
(D) Only for tests