Our Changing Earth — Social Studies STD 7 — Question
CBSE BoardEnglish MediumSTD 7Social StudiesOur Changing Earth3 Marks
Question
How earthquakes are measured?
✓
Answer
An earthquake is measured with a machine called a seismograph. The magnitude of the earthquake is measured on the Richter scale. An earthquake of 2.0 or less can be felt only a little. An earthquake over 5.0 can cause damage from things falling. A 6.0 or higher magnitude is considered very strong and 7.0 is classified as a major earthquake.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.