Question 1

How do things work? (Page 2)

Accepted Answer

Things work because of how different parts or materials interact with each other. For example, in a clock, the gears move to show the time, and in a plant, the roots absorb water to help it grow, glowing of an electric bulb. Our bodies work in a similar way, with each organ having a special role to keep us healthy. Science helps us understand how these parts work together to make things function properly.

Question 2

Why do events happen the way they do? (Page 2)

Accepted Answer

Events happen the way they do because of a combination of cause and effect. Every action or decision leads to a result. For example, if it rains, the ground gets wet because rain causes that change. In nature, and in life, things happen based on certain conditions, patterns, and rules. Science helps us understand these patterns, so we can predict and explain why certain events occur the way they do.

Question 3

What can we learn from the patterns that we see in nature? (Page 2)

Accepted Answer

From the patterns in nature, we can learn about how things work, how changes happen, and how to predict the future events. For example, the changing seasons follow a regular pattern, so we know when to expect spring, summer, fall, or winter. The way plants grow and animals behave also follow patterns that help us understand their life cycles. Studying these patterns helps us make better decisions and understand the world more clearly.

Question 4

Why are some fruits sour? (Page 2)

Accepted Answer

Some fruits are sour because they contain acids like citric acid. The acid content and ripeness affect how sour they taste. For example, lemons are sour due to high citric acid, while other fruits like green mangoes become sweeter as they ripen.

Question 5

What happens when we wash the haldi stain on our uniform? (Page 2)

Accepted Answer

When we wash a haldi stain on our uniform with soap, being basic in nature, soap reacts with the haldi stain. This reaction causes the stain to change into red colour, making it harder to remove.
Class 7 The Ever Evolving World of Science Question Answer (Activities)
Activities 1.1 Question the Answer (Pages 5-6)

Question 6

What should I do if my coffee is too strong?

Accepted Answer

Just add some milk.

Source: This question is from The Ever Evolving World of Science, Science &mdash; Class 7, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter The Ever Evolving World of Science: Coffee, Too, Strong, The Ever Evolving World of Science, Science. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 7 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberRead the question carefully and identify all parts before answering.
Use the terminology specific to this subject and chapter.
Review the textbook content for this chapter before attempting questions.
Practice writing concise, well-structured answers within time limits.
Related Questions from The Ever Evolving World of ScienceQ1: How do things work? (Page 2)
Q2: Why do events happen the way they do? (Page 2)
Q3: What can we learn from the patterns that we see in nature? (Page 2)
Q4: Why are some fruits sour? (Page 2)
Q5: What happens when we wash the haldi stain on our uniform? (Page 2)
Practice more questions from The Ever Evolving World of Science &mdash; Science, Class 7 CBSE

Question 7

Why did my cat have trouble chewing its food?

Accepted Answer

Because the cat’s teeth were crooked. Note: Students can create more questions of their own.

Source: This question is from The Ever Evolving World of Science, Science &mdash; Class 7, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter The Ever Evolving World of Science: Cat, Trouble, Chewing, Food, The Ever Evolving World of Science, Science. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 7 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberRead the question carefully and identify all parts before answering.
Use the terminology specific to this subject and chapter.
Review the textbook content for this chapter before attempting questions.
Practice writing concise, well-structured answers within time limits.
Related Questions from The Ever Evolving World of ScienceQ1: How do things work? (Page 2)
Q2: Why do events happen the way they do? (Page 2)
Q3: What can we learn from the patterns that we see in nature? (Page 2)
Q4: Why are some fruits sour? (Page 2)
Q5: What happens when we wash the haldi stain on our uniform? (Page 2)
Practice more questions from The Ever Evolving World of Science &mdash; Science, Class 7 CBSE

Question 8

What should I do? I forgot to bring your bathrobe.

Accepted Answer

Don’t panic, I have my towel.

Source: This question is from The Ever Evolving World of Science, Science &mdash; Class 7, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter The Ever Evolving World of Science: Forgot, Bring, Bathrobe, The Ever Evolving World of Science, Science. These are fundamental topics in Science that students are expected to master as part of the CBSE Class 7 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberRead the question carefully and identify all parts before answering.
Use the terminology specific to this subject and chapter.
Review the textbook content for this chapter before attempting questions.
Practice writing concise, well-structured answers within time limits.
Related Questions from The Ever Evolving World of ScienceQ1: How do things work? (Page 2)
Q2: Why do events happen the way they do? (Page 2)
Q3: What can we learn from the patterns that we see in nature? (Page 2)
Q4: Why are some fruits sour? (Page 2)
Q5: What happens when we wash the haldi stain on our uniform? (Page 2)
Practice more questions from The Ever Evolving World of Science &mdash; Science, Class 7 CBSE