NCERT Solutions for Class 9 Science Chapter 1 Exploration: Entering the World of Secondary Science
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Page No. 4
Pause and Ponder
1. Think of a prediction you or your family made recently (for example, the outcome of a cricket match). Was it based on evidence and reasoning, or mainly on guesswork?
How can scientific thinking improve such predictions?
Answer
My family predicted a cricket match result based mostly on past performance, but partly guesswork. Scientific thinking improves predictions by using data, patterns, and measurable factors instead of assumptions, making them more reliable.
NCERT Solutions for Class 9 Science Chapter 1 Exploration: Entering the World of Secondary Science
Page No. 9
2. Describe one situation where an approximate answer is good enough, and one where you would need a very exact value.
Answer
Approximate answers work for estimating food or air needs. Exact values are needed in medicine or fuel calculations where small errors can be dangerous.
3. Choose a real‑life object (maybe a pressure cooker or a mobile phone) or a problem (maybe a traffic jam near your school). Make a sketch listing what kind of ideas from physics, chemistry, biology, earth science, or mathematics are involved. Show how at least two branches of science connect with your example.
Answer
A pressure cooker uses physics (heat, pressure) and chemistry (food changes). Both work together to cook food faster and safely.
NCERT Solutions for Class 9 Science Chapter 1 Exploration: Entering the World of Secondary Science
