NCERT · Class 7 · Social Science · Our Changing EarthName the instrument used to measure earthquakes.
Step-by-Step Solution
An earthquake is measured with a machine called a seismograph. It records seismic waves generated by earthquakes.
Detailed Options Breakdown
Option : Barometer
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Our Changing Earth.
Option 1: Thermometer
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Our Changing Earth.
Option 2: Seismograph (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: Richter scale
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Our Changing Earth.
💡 Study Guide: This question tests core syllabus concepts from Our Changing Earth. For formulas, key summaries, and mock exam reference guides, read the full Our Changing Earth Revision Notes.