The Ever-Evolving World of Science
NCERT-Class-7-Science (Curiosity)-Chapter-1
Exam Master
Intext Questions :
What kind of creative questions you can ask for the given answers !
(1) Question: ________________________________________________?
Answer: Just add some milk.
Creative questions :
- I’m white and cold, I make your coffee bold. What am I supposed to add?
- What turns cocoa powder into a delicious drink?
(2) Question: ________________________________________________?
Answer: Because the cat’s teeth were crooked.
- What was the reason behind the cat’s eating problem?
- Why did the cat avoid hard food?
(3) Question: ________________________________________________?
Answer: Don’t panic, I have my towel.
- Why aren’t you worried about getting wet at the beach?
- How did you stay calm after spilling water on yourself?
(4) Question: ________________________________________________?
Answer: 42
- What’s the total number of books on the shelf?
- How many minutes are left in the game?
Objective Type Questions :
Multiple Choice Questions (MCQs) :
Question 1: According to the text, which steps are fundamental to the starting point of how science helps us improve our thinking?
(A) Learning about physics, chemistry, and biology.
(B) Connecting batteries, wires, and bulbs to understand flow.
(C) Starting with curiosity, observing, asking questions, and finding answers through reasoning.
(D) Using clocks and watches to measure time accurately.
(C) Starting with curiosity, observing, asking questions, and finding answers through reasoning.
Question 2: In the example demonstrating the interconnected nature of science when studying water, the study of the states of water (solid, liquid, and gas) falls under which specific scientific field?
(A) Chemistry
(B) Biology
(C) Earth Science
(D) Physics
(D) Physics
Question 3: Which of the following is explicitly categorized as an Irreversible Change in the provided materials?
(A) Melting ice
(B) The movement of heat causing a glacier to melt
(C) Burning paper or ripening fruit
(D) A haldi (turmeric) stain being washed
(C) Burning paper or ripening fruit
Question 4: Science helps us understand the properties of materials. Which specific example is given to illustrate this concept?
(A) How our body grows and digests food.
(B) How light helps us see and creates shadows.
(C) Why a lemon tastes sour.
(D) How people long ago used shadows to tell time.
(C) Why a lemon tastes sour.
Question 5: The movements of the Moon around the Earth and the Earth around the Sun cause which of the following phenomena?
(A) Heat flow and the water cycle.
(B) Phases of the Moon, Seasons, and Sunrise and Sunset.
(C) Eclipses caused by the circulation of blood.
(D) Determining which materials conduct electricity.
(B) Phases of the Moon, Seasons, and Sunrise and Sunset.
State whether True or False :
Question 1: Science starts with curiosity and involves observing, asking questions, and finding answers through reasoning.
Question 2: When studying water, understanding its chemical nature falls under the branch of Physics, while studying its states (solid, liquid, gas) falls under Chemistry.
Question 3: An example of an Irreversible Change is melting ice, as it can be easily changed back into water.
Question 4: Science helps us learn how electricity flows and indicates that materials like plastic allow electricity to pass through them, while metal does not.
Question 5: The movements of the Moon around the Earth and the Earth around the Sun cause phenomena such as the Phases of the Moon, Seasons, and Sunrise and Sunset.
Answer 1: True.
Answer 2: False. (The sources state that studying its states (solid, liquid, gas) falls under Physics, and its chemical nature falls under Chemistry).
Answer 3: False. (Melting ice is specifically given as an example of a Reversible Change).
Answer 4: False. (Science helps us learn that materials like metal allow electricity to pass, and materials like plastic do not).
Answer 5: True.
Short, Very Short Answer Type Questions :
Question 1: Which specific branch of science addresses the chemical nature of water?
Chemistry.
Question 2: Provide one example of an Irreversible Change mentioned in the text.
Burning paper or ripening fruit.
Question 3: What type of material is specifically cited as allowing electricity to pass through (acting as a conductor)?
Metal.
Question 4: According to the source, how does science fundamentally help us improve our thinking?
Science helps us think in a better and logical way. It starts with curiosity and involves observing, asking questions, and finding answers through reasoning.
Question 5: When studying water, which specific branch of science addresses its chemical nature, and which branch addresses its states (solid, liquid, and gas)?
When studying water, its chemical nature falls under Chemistry, and understanding its states (solid, liquid, and gas) falls under Physics.
Question 6: Provide two examples of why the sources state science is important in our daily life related to the properties of materials.
Science helps us understand the properties of materials by knowing why a lemon tastes sour and why a turmeric (haldi) stain turns red when washed with soap.
Question 7: Explain the difference between Reversible and Irreversible Changes, and provide an example of each from the text.
- Reversible Changes, such as melting ice, can be changed back.
- Irreversible Changes, such as burning paper or ripening fruit, cannot be changed back.
Question 8: What are the three specific phenomena caused by the movements of the Moon around the Earth and the Earth around the Sun?
These movements cause the Phases of the Moon, Seasons, and Sunrise and Sunset.
Question 9: In the context of Electricity and Conductivity, what kinds of materials are conductors and what kinds are non-conductors, according to the sources?
Science tells us that materials like metal allow electricity to pass (conductors), and materials like plastic do not (non-conductors).
Question 10: Besides finding answers, what does the text highlight as equally important in the method of "Scientific Inquiry"?
Scientific inquiry involves not only finding answers but, equally importantly, asking creative, curious, and insightful questions.
Question 11: Give two examples of how science explains life processes essential for the survival and growth of living things.
Science explains how our body grows, breathes, and digests food, and how plants grow using sunlight, water, and air. Eating, breathing, and the circulation of blood are listed as key examples of life processes.
Question 12: What is the central philosophy of science ?
- The central philosophy is that science is not merely a collection of facts but an ongoing process of discovery.
- Science is a way of thinking that encourages curiosity, asking questions about how and why things happen, and being open to exploring the unknown.
Question 13: How did early humans measure the passage of time before the invention of modern clocks?
- Before the age of electric clocks, early humans measured time by observing the natural world.
- Specifically, they observed the shadows of objects cast by the Sun and used the changing position of these shadows to tell the time.
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