Science is not only about remembering definitions and formulas. It is about asking questions, observing the world around us, performing experiments, and finding logical explanations. The first chapter of the new NCERT Class 9 Science book 2026–27, Exploration: Entering the World of Secondary Science, introduces students to the real approach of learning science through curiosity and investigation.
This Exploration: Entering the World of Secondary Science Class 9 Worksheet helps students practice important concepts such as scientific methods, observations, experiments, scientific models, measurement, and the role of mathematics in science. The worksheet includes MCQs, fill in the blanks, short answer questions, and long answer questions with solutions for better understanding.
Students can also practice more chapter-wise Worksheets to improve their concepts in different subjects. For complete preparation, explore our Class 9 Worksheets collection designed according to the latest syllabus. Students who want to improve their Mathematics preparation can also use our Class 9 Science Worksheets for regular practice.
Download Exploration: Entering the World of Secondary Science Class 9 Worksheet PDF with Answers
Download the Exploration: Entering the World of Secondary Science Class 9 Worksheet PDF with Answers prepared according to the latest NCERT Class 9 Science textbook. This worksheet helps students revise the chapter through different question formats and strengthen their scientific thinking skills.
This PDF includes:
- Multiple Choice Questions (MCQs)
- Fill in the blanks
- True or False questions
- Assertion Reason questions
- Short answer questions
- Long answer questions
- Detailed answers and explanations
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Learning Outcomes of Exploration Class 9 Science Chapter 1
After completing this worksheet, students will be able to:
- Understand how science begins with curiosity and questions.
- Explain the importance of observations and experiments.
- Learn how scientific models simplify complex ideas.
- Understand the difference between scientific laws and theories.
- Identify the importance of standard measurements and SI units.
- Understand how mathematics supports scientific explanations.
- Develop problem-solving and logical thinking skills.
Exploration: Entering the World of Secondary Science Class 9 Worksheet Questions
Solve the following Exploration: Entering the World of Secondary Science Class 9 Worksheet questions to revise important concepts from the NCERT Class 9 Science Chapter 1. These questions help students practice scientific thinking, observation skills, scientific models, measurements, and important terms from the chapter.
Multiple Choice Questions (MCQs)
1. Science mainly develops through:
a) Memorising facts
b) Personal opinions
c) Observations and experiments
d) Blind beliefs
2. A simplified representation of a complex natural process is known as:
a) Scientific law
b) Scientific model
c) Scientific unit
d) Scientific formula
3. Scientists use simplifying assumptions mainly to:
a) Ignore scientific methods
b) Focus on important factors
c) Remove observations
d) Avoid experiments
4. The International System of Units (SI units) is used to:
a) Create difficult calculations
b) Remove mathematical concepts
c) Maintain standard measurements worldwide
d) Replace scientific experiments
5. Scientific knowledge is mainly developed using:
a) Personal thoughts
b) Evidence and observations
c) Random predictions
d) Traditional beliefs only
6. A scientific law mainly describes:
a) A regular pattern observed in nature
b) An imaginary idea
c) A personal opinion
d) An unknown process
7. The process of finding an approximate value without exact measurement is called:
a) Experimentation
b) Observation
c) Estimation
d) Calculation
8. Mathematics helps scientists by:
a) Making science difficult
b) Explaining relationships clearly
c) Removing the need for experiments
d) Replacing observations
Fill in the Blanks Questions
- Science begins with ______ and questions about the natural world.
- A scientific model is a ______ representation of a complex system.
- Scientists perform ______ to test their ideas.
- Scientific ______ explain why a natural pattern occurs.
- SI units provide a common system of ______.
- Science depends on evidence rather than personal ______.
- Mathematics is considered a common ______ of science.
True or False Questions
- Science is only about memorising facts.
- Scientific models make complex ideas easier to understand.
- Experiments help scientists collect evidence.
- Physics, Chemistry, and Biology have no connection with each other.
- Observations play an important role in scientific studies.
- Standard units help scientists compare measurements.
Assertion Reason Questions
Question 1
Assertion (A): Scientists use models to understand complex systems.
Reason (R): Scientific models simplify reality and focus on important features.
Question 2
Assertion (A): SI units are important in scientific studies.
Reason (R): Standard units allow scientists across the world to compare measurements correctly.
Question 3
Assertion (A): Science depends on evidence and observations.
Reason (R): Scientific explanations are developed by testing ideas through experiments.
Exploration: Entering the World of Secondary Science Class 9 Worksheet Answers
Use this answer key to check your responses after completing the Exploration: Entering the World of Secondary Science Class 9 Worksheet Questions.
Multiple Choice Questions Answer Key
| Question No. | Correct Answer |
|---|---|
| 1 | c) Observations and experiments |
| 2 | b) Scientific model |
| 3 | b) Focus on important factors |
| 4 | c) Maintain standard measurements worldwide |
| 5 | b) Evidence and observations |
| 6 | a) A regular pattern observed in nature |
| 7 | c) Estimation |
| 8 | b) Explaining relationships clearly |
Fill in the Blanks Answer Key
| Question No. | Correct Answer |
|---|---|
| 1 | Curiosity |
| 2 | Simplified |
| 3 | Experiments |
| 4 | Theories |
| 5 | Measurement |
| 6 | Beliefs |
| 7 | Language |
True or False Answer Key
| Question No. | Correct Answer |
|---|---|
| 1 | False |
| 2 | True |
| 3 | True |
| 4 | False |
| 5 | True |
| 6 | True |
Assertion Reason Answer Key
Question 1
Answer: Both Assertion and Reason are true, and Reason correctly explains Assertion.
Explanation: Scientific models simplify complex objects or systems, helping scientists study important features more easily.
Question 2
Answer: Both Assertion and Reason are true, and Reason correctly explains Assertion.
Explanation: SI units create a common measurement system that helps scientists share and compare results accurately.
Question 3
Answer: Both Assertion and Reason are true, and Reason correctly explains Assertion.
Explanation: Science develops through observations, experiments, and evidence-based explanations rather than assumptions.
Exploration Class 9 Science Chapter 1 Notes
Here are some important revision points from Exploration: Entering the World of Secondary Science:
- Science begins with curiosity and questioning.
- Observation is the first step toward scientific understanding.
- Experiments provide evidence for scientific ideas.
- Scientific models help simplify complex systems.
- Scientific laws describe patterns found in nature.
- Scientific theories explain why those patterns occur.
- Mathematics acts as a common language of science.
- Standard units help maintain accurate measurements.
- Different areas of science are connected with each other.
