Heat, temperature and thermal expansion - One Line Questions

1. What is absolute zero temperature in Fahrenheit? — -459.67°F
2. What is the freezing point of water on the Celsius scale? — 0°C
3. What is the Celsius temperature of absolute zero? — -273.15°C
4. The anomalous expansion of water occurs between which temperatures? — 0°C and 4°C
5. The volume expansion coefficient of a solid is approximately how many times its linear expansion coefficient? — 3
6. Specific heat capacity is defined as the heat required to raise the temperature of how much mass of a substance by 1°C? — Unit mass
7. A solid bar expands by 0.1% when its temperature is raised by 10°C. The coefficient of linear expansion is: — 10⁻⁵ /°C
8. A metal rod of length 1m expands by 1mm when heated by 100°C. What is its coefficient of linear expansion? — 10⁻⁵ /°C
9. What is the boiling point of water on the Fahrenheit scale? — 212°F
10. If the temperature of a room is 25°C, what is its equivalent temperature in Kelvin? — 298.15 K
11. If the length of a rod increases by 0.5% when heated by 10°C, the coefficient of linear expansion is: — 5 x 10⁻⁵ /°C
12. A steel tape measure is more accurate at higher temperatures if it is calibrated at: — A lower temperature
13. What is the temperature at which a solid melts into a liquid called? — Melting point
14. A bimetallic strip bends with heating because: — One metal expands more than the other
15. The SI unit of heat is: — Joule
16. Which of the following is the SI unit of temperature? — Kelvin
17. Which temperature scale has absolute zero as its lowest point? — Kelvin
18. Which temperature scale is commonly used in scientific research and calculations? — Kelvin
19. When water is cooled from 4°C to 0°C, it: — Expands
20. The coefficient of cubical expansion for a liquid is generally: — Three times its coefficient of linear expansion
21. The conversion formula from Celsius (C) to Fahrenheit (F) is: — F = (9/5)C + 32
22. Why is glass less suitable than metal for making thermometers that measure very high temperatures? — Glass has a lower coefficient of thermal expansion than mercury
23. Which property of matter is directly related to the average kinetic energy of its constituent particles? — Temperature
24. Which of the following is a measure of the hotness or coldness of an object? — Temperature
25. What is the relationship between heat and temperature? — Heat is the transfer of thermal energy, while temperature is a measure of the average kinetic energy of particles.
26. A bimetallic strip is made of two metals with different coefficients of thermal expansion. When heated, the strip bends towards the metal with the: — Lower coefficient of expansion
27. Thermal expansion in solids is primarily due to: — Increased atomic vibration amplitude
28. If a substance has a negative coefficient of thermal expansion, it means that its volume: — Decreases when heated
29. Thermal expansion is a macroscopic manifestation of: — Intermolecular vibrations
30. Which of the following has the highest specific heat capacity? — Water
31. When heat is added to a substance, what generally happens to its temperature? — It increases
32. What happens to the density of most substances when heated? — It decreases
33. Which of the following is a consequence of the anomalous expansion of water? — Lakes freeze from the top down
34. A brass scale measures 1m length correctly at 20°C. What length will it measure at 40°C for a true length of 1m? — Slightly less than 1m
35. Which state of matter generally exhibits the most significant thermal expansion? — Gas
36. The heat required to raise the temperature of 1 kg of a substance by 1°C is called its: — Heat capacity
37. Which of the following materials has the highest coefficient of linear expansion? — Aluminum
38. Which statement about heat and temperature is correct? — Temperature determines the direction of heat flow.
39. The heat capacity of an object is: — The amount of heat needed to raise its temperature by 1°C
40. What is thermal expansion? — The change in volume of a substance due to a change in temperature
41. What does temperature measure at a microscopic level? — The average kinetic energy of the particles
42. Which phenomenon is responsible for the apparent bending of a ruler when heated unevenly? — Thermal expansion
43. A mercury thermometer works on the principle of: — Thermal expansion of mercury
44. Why are gaps left in railway tracks and bridges? — To allow for thermal expansion
45. Which of the following is a unit of heat energy? — Joule
46. What is the coefficient of linear expansion of an ideal gas at constant pressure? — Zero
47. If a solid has a coefficient of linear expansion α, its coefficient of superficial expansion is approximately: — 2α
48. What is the coefficient of volume expansion (β) for an isotropic solid? — β = 3α
49. The coefficient of linear expansion (α) relates the change in length (ΔL) to the original length (L₀) and the change in temperature (ΔT) by the formula: — ΔL = αL₀ΔT
50. The change in volume (ΔV) due to thermal expansion of a liquid is given by: — ΔV = γV₀ΔT
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