1. Which device is used to measure temperature?

A) Barometer

B) Hygrometer

C) Thermometer

D) Lactometer

2. What is the SI unit of temperature?

A) Kelvin

B) Celsius

C) Fahrenheit

D) Joule

3. Which scale shows the freezing point of water as 0?

A) Kelvin

B) Fahrenheit

C) Richter

D) Celsius

4. Which scale shows the boiling point of water as 100 at normal pressure?

A) Fahrenheit

B) Celsius

C) Kelvin

D) Decibel

5. Heat is a form of

A) Matter

B) Force

C) Energy

D) Pressure

6. Temperature tells us about the

A) Hotness of a body

B) Weight of a body

C) Speed of a body

D) Shape of a body

7. Heat flows from

A) Cold body to hot body

B) Hot body to cold body

C) Heavy body to light body

D) Solid to liquid

8. Which of these is a good conductor of heat?

A) Wood

B) Plastic

C) Rubber

D) Copper

9. Which of these is a poor conductor of heat?

A) Glass

B) Iron

C) Aluminium

D) Copper

10. The normal human body temperature is about

A) 27°C

B) 47°C

C) 37°C

D) 57°C

11. What happens to most substances when heated?

A) They contract

B) They expand

C) They melt always

D) They disappear

12. Which method of heat transfer does not need a medium?

A) Conduction

B) Convection

C) Evaporation

D) Radiation

13. Heat transfer in solids mainly takes place by

A) Conduction

B) Convection

C) Radiation

D) Reflection

14. Heat transfer in liquids mainly takes place by

A) Conduction

B) Radiation

C) Convection

D) Refraction

15. The Sun heats the Earth mainly by

A) Conduction

B) Convection

C) Friction

D) Radiation

16. Which color absorbs more heat?

A) White

B) Black

C) Yellow

D) Pink

17. Which color reflects more heat?

A) Black

B) Brown

C) White

D) Blue

18. Why are cooking utensils often made of metal?

A) Metals conduct heat well

B) Metals are soft

C) Metals are cheap

D) Metals are transparent

19. Why are handles of cooking pots often made of wood or plastic?

A) They are shiny

B) They are poor conductors

C) They are heavy

D) They melt fast

20. Which statement is correct about boiling water?

A) Its temperature keeps rising after boiling starts

B) Its temperature remains constant during boiling

C) Its temperature becomes zero

D) Its temperature falls suddenly

21. What is the freezing point of water on the Fahrenheit scale?

A) 32°F

B) 0°F

C) 100°F

D) 212°F

22. What is the boiling point of water on the Fahrenheit scale?

A) 100°F

B) 180°F

C) 212°F

D) 273°F

23. Which of these is an example of heat transfer by convection?

A) Sunlight warming Earth

B) Water circulating while heating

C) Iron rod getting hot

D) Feeling warmth near fire through rays

24. Which of these is an example of heat transfer by conduction?

A) Sea breeze

B) Warmth from the Sun

C) Water currents in a pan

D) A metal spoon getting hot in tea

25. Which thermometer is commonly used to measure human body temperature?

A) Laboratory thermometer

B) Maximum thermometer

C) Clinical thermometer

D) Digital barometer