Question Paper
Class / Subject: Class 7 (CBSE) · Science
Chapter: Chapter 7 — Chapter 7: Heat Transfer in Nature
Time Allowed: 15 minutes
Max Marks: 6
1. Heat from the Sun reaches Earth by: [1]
(A) radiation
(B) conduction
(C) convection
(D) reflection
2. Boiling water demonstrates heat transfer mainly by: [1]
(A) convection
(B) conduction
(C) radiation
(D) reflection
3. A metal spoon getting hot in soup shows heat transfer by: [1]
(A) conduction
(B) convection
(C) radiation
(D) evaporation
4. A sea breeze occurs mainly due to: [1]
(A) convection currents from uneven heating
(B) conduction
(C) radiation only
(D) reflection
5. At night, a land breeze occurs because: [1]
(A) land cools faster than the sea
(B) land heats faster than the sea
(C) there is no temperature difference
(D) the sea freezes
6. Monsoon winds are driven by a similar principle to: [1]
(A) land and sea breezes
(B) conduction only
(C) radiation only
(D) reflection