Page 59 - CT&AI_CLasa_7_Part_1

What do A and B represent? Which step is most important to ensure a
(Pattern Recognition) scientific approach? (Decomposition)
(a) A = slow changes, B = fast changes (a) Guessing the result before

(b) A = reversible changes, experiment.

B = irreversible changes (b) Copying answers from a book.

(c) A = physical changes, (c) Observing carefully and recording
B = chemical changes results.

(d) A = man-made changes, (d) Ignoring unusual results.
computational thinking quest B = natural changes
8. Earlier, people used sundials to measure
5. A student records: time. Later, water clocks and mechanical
Tick ( ) the correct option.
Time Shadow Length clocks were developed. Today, atomic clocks
1. A student says:
Morning Long are used.
"Science is like solving a mystery puzzle where Noon Short What does this progression show?
every answer leads to more questions." Evening Long (Decomposition)
Which concept from the chapter best What pattern does he observe? (a) Time does not change.
matches this idea? (Abstract Thinking) (Pattern Recognition)
(a) Shadows disappear at noon. (b) Science improves accuracy over
(a) Science is limited to laboratories.
time.
(b) Shadow length depends on Sun’s
(b) Science gives fixed answers.
position. (c) Sundials are the most accurate to
(c) Science is based only on measure time.
(c) Shadows are constant in length.
experiments.
(d) Modern clocks are less useful in
(d) Shadows depend on object 's colour.
(d) Science is a never-ending journey. measuring time.
6. A student asks questions like:
2. A student says: • Why does ice melt? 9. A student wants to understand life processes

"If I stop asking questions, I will stop exploring • How does a bulb glow? in animals. He lists:
science." (i) Digestion
• Why do seasons change?
Which reasoning best supports this What does this behaviour indicate? (ii) Breathing
statement? (Abstract Thinking) (iii) Transportation
(Decomposition)
(iv) Photosynthesis
(a) Science depends only on (a) Lack of interest

textbooks. Which set correctly represents life processes
(b) Carelessness in animals? (Algorithmic Thinking)
(b) Science is only about experiments.
(c) Memorisation (a) (i), (ii), (iii)
(c) Questions lead to observation and
(d) Scientific curiosity and thinking
discovery. (b) (ii), (iii), (iv)
7. A student performs an experiment to classify
(d) Answers are more important than materials as metals and non-metals. He (c) (i), (iii), (iv)
questions. observes their shine, hardness, and ability to

conduct electricity. (d) (i), (ii), (iii), (iv)

The Ever-Evolving World of Science 57