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2 cards from this section. Quick, good the night before a test.
What is area expansion?
Think about what happens when materials are heated.
What does the coefficient of area expansion indicate?
Remember the definition of the coefficient in relation to temperature.
What is the primary consequence of thermal expansion in solids?
Consider the effects of heating.
True or False: Area expansion is characterized by the formula ΔA = 2αA0ΔT.
Recall the formula we've discussed.
A circular metal disc with an original area of 5 m² is heated from 15°C to 90°C. The coefficient of area expansion is 1.1 × 10^−5 °C⁻¹. Calculate the change in area and the new area.
Ensure to follow each step in the calculation carefully.
Explain how area expansion can affect the surface of a roadway during hot weather, produce an example of structural failure.
Think about how structures interact with temperature changes.
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