Question

what are volcanoes? what is volcanism?​

Answer 1

ᴠᴏʟᴄᴀɴɪsᴍ (ᴏʀ ᴠᴏʟᴄᴀɴɪᴄɪᴛʏ) ɪs ᴛʜᴇ ᴘʜᴇɴᴏᴍᴇɴᴏɴ ᴏғ ᴇʀᴜᴘᴛɪᴏɴ ᴏғ ᴍᴏʟᴛᴇɴ ʀᴏᴄᴋ (ᴍᴀɢᴍᴀ) ᴏɴᴛᴏ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴏғ ᴛʜᴇ ᴇᴀʀᴛʜ ᴏʀ ᴀ sᴏʟɪᴅ-sᴜʀғᴀᴄᴇ ᴘʟᴀɴᴇᴛ ᴏʀ ᴍᴏᴏɴ, ᴡʜᴇʀᴇ ʟᴀᴠᴀ, ᴘʏʀᴏᴄʟᴀsᴛɪᴄs ᴀɴᴅ ᴠᴏʟᴄᴀɴɪᴄ ɢᴀsᴇs ᴇʀᴜᴘᴛ ᴛʜʀᴏᴜɢʜ ᴀ ʙʀᴇᴀᴋ ɪɴ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴄᴀʟʟᴇᴅ ᴀ ᴠᴇɴᴛ.

Answer 2

Answer:

What are volcanoes?

volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.

What is volcanism?

Volcanism is the phenomenon of eruption of molten rock onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics and volcanic gases erupt through a break in the surface called a vent.