Question Paper
Class / Subject: Class 8 (SSC) · Science (सामान्य विज्ञान)
Chapter: Chapter 14 — Chapter 14: Measurement and Effects of Heat
Time Allowed: 32 minutes
Max Marks: 16
1. What is heat? [1]
(A) A form of energy flowing hot to cold
(B) A type of matter
(C) A type of force only
(D) A type of light
2. What measures temperature? [1]
(A) A thermometer
(B) A ruler
(C) A weighing scale
(D) A compass
3. What happens to materials when heated? [1]
(A) They expand
(B) They always contract
(C) No change occurs
(D) They disappear
4. What happens to materials when cooled? [1]
(A) They contract
(B) They always expand
(C) No change occurs
(D) They disappear
5. What is conduction? [1]
(A) Heat transfer through direct contact
(B) Heat transfer through fluid movement
(C) Heat transfer through waves
(D) No heat transfer
6. What is convection? [1]
(A) Heat transfer through fluid movement
(B) Heat transfer through direct contact
(C) Heat transfer through waves
(D) No heat transfer
7. What is radiation? [1]
(A) Heat transfer through electromagnetic waves
(B) Heat transfer through direct contact only
(C) Heat transfer through fluid only
(D) No heat transfer
8. Why do metal rails have gaps? [1]
(A) To allow for expansion when heated
(B) To save material only
(C) For decoration
(D) No specific reason
9. What is heat? [1]
(A) A form of energy flowing hot to cold
(B) A type of matter
(C) A type of force only
(D) A type of light
10. What measures temperature? [1]
(A) A thermometer
(B) A ruler
(C) A weighing scale
(D) A compass
11. What happens to materials when heated? [1]
(A) They expand
(B) They always contract
(C) No change occurs
(D) They disappear
12. What happens to materials when cooled? [1]
(A) They contract
(B) They always expand
(C) No change occurs
(D) They disappear
13. What is conduction? [1]
(A) Heat transfer through direct contact
(B) Heat transfer through fluid movement
(C) Heat transfer through waves
(D) No heat transfer
14. What is convection? [1]
(A) Heat transfer through fluid movement
(B) Heat transfer through direct contact
(C) Heat transfer through waves
(D) No heat transfer
15. What is radiation? [1]
(A) Heat transfer through electromagnetic waves
(B) Heat transfer through direct contact only
(C) Heat transfer through fluid only
(D) No heat transfer
16. Why do metal rails have gaps? [1]
(A) To allow for expansion when heated
(B) To save material only
(C) For decoration
(D) No specific reason