ThinkRankThe Wonderful World of Science
Science is a way of asking careful questions about the natural and human-made world. It begins with curiosity, but reliable knowledge also requires observation, measurement, evidence, and explanations that can be checked by others. This chapter introduces scientific thinking through familiar situations and shows why a question should be investigated rather than answered only by guesswork.
Learning Objectives
- •Describe science as a process of inquiry and evidence
- •Distinguish an observation from an inference or explanation
- •Design a simple fair investigation by changing one factor at a time
- •Recognise how science and technology solve practical problems
Key Concepts
Curiosity becomes a question
A scientific investigation starts when we turn something we notice into a clear question that can be explored.
Evidence is more than an opinion
Evidence comes from observations, measurements, records, or results that other people can examine and compare.
Fair testing
When testing an idea, keep important conditions the same and change one factor so that the result can be interpreted.
Science and technology are connected
Science develops explanations about the world, while technology applies knowledge and design to meet human needs. They influence each other.
Terminology
Historical Insight
Which paper plane flies farther?
A fair comparison can keep the paper and throwing position the same while changing one design feature and measuring the distance.
Why does a metal spoon feel colder?
The feeling is an observation that invites investigation of heat transfer, rather than proof that the spoon has a lower temperature.
Quick Check
What makes a question suitable for investigation?
Why should a fair test change only one important factor at a time?
How are science and technology related?
How to use this lesson
Read the overview first, then explain the main idea in your own words before checking the key concepts. Use the quick-check questions without looking at the answer. For examination preparation, verify dates, definitions, and syllabus requirements against your official textbook and school or examination-board guidance.