You are here
Science as a Journey of Discovery
- Science is more than theories and laws
- It is a journey of discovery
- We explore by asking questions
- Then we find the answers
- It helps us understand how things work
Example 1 — Everyday wonders
- why oil floats on water
- why we fall on slippery surfaces
- why a thrown object comes down
Example 2 — Boiling water to steam engine
- steam occupies a larger volume
- this creates pressure
- the idea led to the steam engine
Important Points
- The steam engine was first built by Thomas Newcomen and improved by James Watt.
- Thomas Edison invented the incandescent lamp, built on the earlier arc lamp idea.
- Vaccines, life-saving drugs, telephone, internet, aeroplane and satellite are great gifts of science.
Definition — Science
Science means a journey of discovery that helps us explore the world by asking questions and finding answers.
Objective Type Questions Q1(e) - Page 13 Lakhmir Singh
Question
Name the following: A form of energy used to see objects around us.
Show answer
Light
Explanation
- Light is a form of energy; without it we could not see objects around us.
Objective Type Questions Q2(a) - Page 13 Lakhmir Singh
Question
Fill in the blank: Oil ________ on water.
Show answer
floats
Explanation
- Oil is lighter than water, so it floats on its surface.
Objective Type Questions Q2(b) - Page 13 Lakhmir Singh
Question
Fill in the blank: ________ helps us to discover things in the universe and how things work.
Show answer
Science
Explanation
- Science helps us understand the universe and how things work.
Objective Type Questions Q2(c) - Page 13 Lakhmir Singh
Question
Fill in the blank: ________ discovered incandescent lamp.
Show answer
Thomas Edison
Explanation
- Edison invented the incandescent lamp, building on earlier arc lamp ideas.
Objective Type Questions Q2(e) - Page 13 Lakhmir Singh
Question
Fill in the blank: ________ has helped in the eradication of many diseases.
Show answer
Vaccine (vaccination)
Explanation
- The discovery of vaccines helped eradicate deadly diseases like polio and smallpox.
