Q1
A reliable scientific investigation should be:
Arepeatable and controlled
Bbased on guesses only
Cnever checked again
Ddone just once
CBSEClass 7 (CBSE)ScienceCh 1 · Topic 2
The Scientific Method in Practice
Learning the systematic steps scientists follow to investigate questions.
Core concept
For example, to test whether sunlight affects plant growth, a scientist would grow two identical plants under identical conditions except for light exposure — one in sunlight, one in darkness — keeping water, soil, and temperature the same. This is called a controlled experiment. Reliable experiments should also be repeatable, meaning other scientists can perform the same experiment and get similar results, which helps confirm the finding is accurate and not just a coincidence.
Exam highlight
Key diagram
Keywords worth remembering
Trending
the scientific method in practicecbse class 7
Most searched
CBSE class 7 the scientific method in practice
Quick revision
Study resources
Notes & downloads
Quick notes
• The scientific method uses observation, hypothesis, controlled experiments, and conclusions.
• A controlled experiment changes only one variable while keeping others constant.
• Reliable results should be repeatable by other scientists.
• Repeatability helps confirm a finding is accurate, not coincidental.