a magnetic compass is made of
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The needle of a magnetic compass must be made of a metallic substance, which can be magnetized for an extended period of time. The most common substance used for compass needles is steel. Steel is an alloy of iron and a small amount of carbon.
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- ᴛʜᴇ ɴᴇᴇᴅʟᴇ ᴏғ ᴀ ᴍᴀɢɴᴇᴛɪᴄ ᴄᴏᴍᴘᴀss ᴍᴜsᴛ ʙᴇ ᴍᴀᴅᴇ ᴏғ ᴀ ᴍᴇᴛᴀʟʟɪᴄ sᴜʙsᴛᴀɴᴄᴇ, ᴡʜɪᴄʜ ᴄᴀɴ ʙᴇ ᴍᴀɢɴᴇᴛɪᴢᴇᴅ ғᴏʀ ᴀɴ ᴇxᴛᴇɴᴅᴇᴅ ᴘᴇʀɪᴏᴅ ᴏғ ᴛɪᴍᴇ. ᴛʜᴇ ᴍᴏsᴛ ᴄᴏᴍᴍᴏɴ sᴜʙsᴛᴀɴᴄᴇ ᴜsᴇᴅ ғᴏʀ ᴄᴏᴍᴘᴀss ɴᴇᴇᴅʟᴇs ɪs sᴛᴇᴇʟ. sᴛᴇᴇʟ ɪs ᴀɴ ᴀʟʟᴏʏ ᴏғ ɪʀᴏɴ ᴀɴᴅ ᴀ sᴍᴀʟʟ ᴀᴍᴏᴜɴᴛ ᴏғ ᴄᴀʀʙᴏɴ.♡
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