Question

what is seismograh &richter scale ?​

Answer 1

Seismograph is an instrument used to record and detect earthquake like in otherwords it helps us to know how big was the earthquake and how long did It last.

Richter scale is a scale or an instrument used to detect the power of the earthquake, power of earthquakes are measured in magnitudes.

Answer 2

Answer:

ᴛʜᴇ ʀɪᴄʜᴛᴇʀ sᴄᴀʟᴇ ɪs ᴀ ʟᴏɢᴀʀɪᴛʜᴍɪᴄ sᴄᴀʟᴇ, ᴍᴇᴀɴɪɴɢ ᴛʜᴀᴛ ᴛʜᴇ ɴᴜᴍʙᴇʀs ᴏɴ ᴛʜᴇ sᴄᴀʟᴇ ᴍᴇᴀsᴜʀᴇ ғᴀᴄᴛᴏʀs ᴏғ 10. ... ᴀ sᴇɪsᴍᴏɢʀᴀᴘʜ ɪs ᴛʜᴇ ᴅᴇᴠɪᴄᴇ ᴛʜᴀᴛ sᴄɪᴇɴᴛɪsᴛs ᴜsᴇ ᴛᴏ ᴍᴇᴀsᴜʀᴇ ᴇᴀʀᴛʜǫᴜᴀᴋᴇs. ᴛʜᴇ ɢᴏᴀʟ ᴏғ ᴀ sᴇɪsᴍᴏɢʀᴀᴘʜ ɪs ᴛᴏ ᴀᴄᴄᴜʀᴀᴛᴇʟʏ ʀᴇᴄᴏʀᴅ ᴛʜᴇ ᴍᴏᴛɪᴏɴ ᴏғ ᴛʜᴇ ɢʀᴏᴜɴᴅ ᴅᴜʀɪɴɢ ᴀ ǫᴜᴀᴋᴇ.