Tasneem should not use stretchable rubber and cloth because they can change shape and length, leading to inaccurate measurements. A meter scale needs a rigid material like plywood, paper, or steel for accuracy.
Tasneem wants to make a metre scale by herself. She considers the following materials for it- plywood, paper, cloth, stretchable rubber and steel. Which of these should she not use and why?
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Tasneem should avoid using stretchable rubber and cloth for making a meter scale because these materials can easily stretch or shrink, causing inconsistent and inaccurate measurements. A reliable meter scale requires a rigid, non-flexible material that maintains its shape and length over time. Plywood, paper, and steel are better choices because they are stable and provide consistent measurements. Steel is especially preferred for its durability and precision, making it ideal for accurate length measurement.
For more CBSE Class 6 Science Curiosity Chapter 5 Measurement of Length and Motion Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-5/