Science Revision test questions (Heat) class 7
HEAT 1. A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because a. newspaper is at a higher temperature than the temperature of the surrounding b. newspaper is conductor of heat c. friction between the layers of newspaper produces heat d. air trapped between the layers of newspaper is a bad conductor of heat Ans. d. air trapped between the layers of newspaper is a bad conductor of heat 2. Paheli and Boojho measured their body temperature. Paheli found her's to be 98.6°F and Boojho recorded 37 ° C . Which of the following statement is true? a. Both are suffering from fever b. Paheli has a higher body temperature than Boojho c. Both have normal body temperature d. Paheli have lower body temperature than Boojho Ans. c . Both have normal body temperature 3. The heat in liquids and gases is transferred by the process of