Question

1. What is the contribution of James Watt?
2. How is a submarine different from other vehicles that can move in water?​

Answer 1

1) James Watt was an 18th-century inventor and instrument maker. Although Watt invented and improved a number of industrial technologies, he is best remembered for his improvements to the steam engine.

2) Submarines use diving planes and also change the amount of water and air in ballast tanks to change buoyancy for submerging and surfacing. Submarines have one of the widest ranges of types and capabilities of any vessel.

Answer 2

1 . ᴊᴀᴍᴇꜱ ᴡᴀᴛᴛ ᴡᴀꜱ ᴀɴ 18ᴛʜ-ᴄᴇɴᴛᴜʀʏ ɪɴᴠᴇɴᴛᴏʀ ᴀɴᴅ ɪɴꜱᴛʀᴜᴍᴇɴᴛ ᴍᴀᴋᴇʀ. ᴀʟᴛʜᴏᴜɢʜ ᴡᴀᴛᴛ ɪɴᴠᴇɴᴛᴇᴅ ᴀɴᴅ ɪᴍᴘʀᴏᴠᴇᴅ ᴀ ɴᴜᴍʙᴇʀ ᴏꜰ ɪɴᴅᴜꜱᴛʀɪᴀʟ ᴛᴇᴄʜɴᴏʟᴏɢɪᴇꜱ, ʜᴇ ɪꜱ ʙᴇꜱᴛ ʀᴇᴍᴇᴍʙᴇʀᴇᴅ ꜰᴏʀ ʜɪꜱ ɪᴍᴘʀᴏᴠᴇᴍᴇɴᴛꜱ ᴛᴏ ᴛʜᴇ ꜱᴛᴇᴀᴍ ᴇɴɢɪɴᴇ.

2.ꜱᴜʙᴍᴀʀɪɴᴇꜱ ᴜꜱᴇ ᴅɪᴠɪɴɢ ᴘʟᴀɴᴇꜱ ᴀɴᴅ ᴀʟꜱᴏ ᴄʜᴀɴɢᴇ ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏꜰ ᴡᴀᴛᴇʀ ᴀɴᴅ ᴀɪʀ ɪɴ ʙᴀʟʟᴀꜱᴛ ᴛᴀɴᴋꜱ ᴛᴏ ᴄʜᴀɴɢᴇ ʙᴜᴏʏᴀɴᴄʏ ꜰᴏʀ ꜱᴜʙᴍᴇʀɢɪɴɢ ᴀɴᴅ ꜱᴜʀꜰᴀᴄɪɴɢ. ꜱᴜʙᴍᴀʀɪɴᴇꜱ ʜᴀᴠᴇ ᴏɴᴇ ᴏꜰ ᴛʜᴇ ᴡɪᴅᴇꜱᴛ ʀᴀɴɢᴇꜱ ᴏꜰ ᴛʏᴘᴇꜱ ᴀɴᴅ ᴄᴀᴘᴀʙɪʟɪᴛɪᴇꜱ ᴏꜰ ᴀɴʏ ᴠᴇꜱꜱᴇʟ.