Thermal Expansion
Physics ⇒ Heat and Thermodynamics
Thermal Expansion starts at 7 and continues till grade 12.
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See sample questions for grade 10
A glass beaker is filled to the brim with water at 20°C. What will happen if the temperature is increased to 80°C?
A liquid is heated in a glass container. Which expands more, the liquid or the container?
Describe one practical application of thermal expansion in everyday life.
Describe what happens to the density of a substance as it expands due to heating.
Explain why gaps are left between sections of railway tracks.
Explain why glass windows sometimes crack in winter.
Explain why telephone wires appear to sag more in summer than in winter.
A glass beaker is filled to the brim with water at 20°C. What will happen if the temperature is increased to 80°C?
The coefficient of cubical expansion is approximately how many times the coefficient of linear expansion for the same material? (1) 1 (2) 2 (3) 3 (4) 6
Which of the following devices uses the principle of differential expansion? (1) Thermometer (2) Bimetallic strip (3) Barometer (4) Hydrometer
Which of the following is NOT a consequence of thermal expansion? (1) Railway tracks buckling in summer (2) Gaps in bridges (3) Water freezing in pipes (4) Mercury rising in a thermometer
Which of the following is NOT affected by thermal expansion? (1) Length of a metal rod (2) Volume of a gas (3) Mass of a substance (4) Area of a metal sheet
Fill in the blank: The expansion of a gas at constant pressure is called _______ expansion.
Fill in the blank: The expansion of a material in all directions is called _______ expansion.
Fill in the blank: The formula for area expansion is ΔA = _______ × A₀ × ΔT.
Fill in the blank: The rise of mercury in a thermometer is due to the _______ expansion of mercury.
True or False: Liquids generally expand more than solids for the same temperature rise.
True or False: The coefficient of expansion for water is constant at all temperatures.
True or False: The coefficient of linear expansion is the same for all materials.
True or False: The expansion of a liquid is measured using a vessel that does not expand with temperature.
