UNIT: MEASUREMENT

ACT-Based Science: Temperature and Expansion Measurements Answer Key

Applied Science Problem:

A metal rod is 10.0 cm long at 20°C. After being heated to 100°C, its length increases to 10.2 cm. What is the percentage increase in length?

0.5%

1.0%

2.0%

5.0%

(Correct Answer: C – Percentage Increase = [(10.2 - 10.0) ÷ 10.0] × 100 = 2.0%)