Heat

Grade 7 Science — Heat: 25 practice questions with instant scoring and explanations.

1. Heat is a form of
2. The transfer of heat through direct contact is called
3. Which of the following is the best conductor of heat?
4. Convection occurs in
5. Heat transfer through empty space (vacuum) is called
6. An insulator is a material that
7. In a clinical thermometer, the range of temperature is
8. A laboratory thermometer typically measures temperatures between
9. The bulb of a clinical thermometer is
10. During the day, a land breeze blows from
11. A sea breeze occurs during the
12. The reason sea breezes occur is that
13. When cooking food on a stove, the handle of a metal spoon becomes hot due to
14. Which material would be best for use as an insulator in a thermos bottle?
15. A thermometer with a constriction near the bulb is used to
16. In a convection current in a liquid, hot liquid rises because it becomes
17. The conduction of heat in metals occurs due to the movement of
18. Which of the following demonstrates convection in air?
19. The rate of heat conduction depends on
20. Radiation differs from conduction and convection because it
21. Why do we use light-coloured clothes in summer?
22. The process of change from liquid to gas due to heat is called
23. A clinical thermometer should be washed in
24. Which statement about heat and temperature is correct?
25. In convection, the movement is caused by differences in