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4 cards from this section. Quick, good the night before a test.
What is thermal expansion?
Think about what happens to materials when heated.
What does the coefficient of linear expansion represent?
Consider its role in the formula for length change.
What does thermal expansion refer to?
Think about what happens to objects placed in the sun.
True or False: The coefficient of linear expansion is the same for all materials.
Consider how every material reacts differently to heat.
A 10 m long aluminum rail has a coefficient of thermal expansion of 23 x 10^-6 /°C. If the rail heats from 20°C to 70°C, what will be its new length?
Remember to calculate the difference in temperature first.
Why is accommodating thermal expansion crucial for power lines strung across long distances?
Think about the long distances and potential temperature variances power lines face daily.
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