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3 cards from this section. Quick, good the night before a test.
What is thermal expansion?
Think about how heat influences materials.
What does the coefficient of linear expansion (α) indicate?
Consider its relationship to temperature change.
What happens to the particles in a solid when it is heated?
Consider the activity levels of particles with heat.
True or False: The coefficient of linear expansion is the same for all materials.
Think about why metals and plastics behave differently.
Calculate the final length of a steel rod (length 5.0 m, initial temperature 25°C) when heated to 75°C. The coefficient of linear expansion for steel is 1.1 × 10^-5 °C⁻¹.
Remember to apply the linear expansion formula correctly.
A wooden beam of original dimensions 4.0 m x 0.2 m x 0.15 m, expands uniformly when heated from 20°C to 80°C. Calculate the increase in volume if the coefficient of volumetric expansion is 3 × 10^-4 °C⁻¹.
Track your calculations for each phase of expansion.
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