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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is thermal expansion?
💡 Hint: Think about what happens to materials when heated.
Question 2
Easy
What does the coefficient of linear expansion represent?
💡 Hint: Consider its role in the formula for length change.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does thermal expansion refer to?
- Contracting materials
- Expanding materials when heated
- Materials that stay the same size
💡 Hint: Think about what happens to objects placed in the sun.
Question 2
True or False: The coefficient of linear expansion is the same for all materials.
- True
- False
💡 Hint: Consider how every material reacts differently to heat.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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?
💡 Hint: Remember to calculate the difference in temperature first.
Question 2
Why is accommodating thermal expansion crucial for power lines strung across long distances?
💡 Hint: Think about the long distances and potential temperature variances power lines face daily.
Challenge and get performance evaluation