volcano

«volcano» in Mova's school dictionary: a mountain or opening in the Earth's surface where hot… — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

part of speech

noun (a volcano, volcanoes or volcanos)

meaning for a pupil

1) A volcano is a mountain or opening in the Earth's surface where hot melted rock (lava), ash and gases come out from deep inside. tree →

2) An active volcano can still erupt; a dormant one is sleeping and might erupt again; an extinct one is not expected to erupt again. tree →

sense in the lessons

In geography and science, volcanoes form where tectonic plates meet or over hot spots; magma underground becomes lava when it comes out; an eruption can cause lava flows, ash clouds and new land. Famous volcanoes include Mount St Helens and Kīlauea in the USA, Mount Etna and Vesuvius in Italy, and Mount Ruapehu in New Zealand; Edinburgh Castle sits on an old volcano. A classic school model uses baking soda and vinegar. Phrases: «active volcano», «dormant volcano», «extinct volcano», «the volcano erupted».

examples

• A volcano erupted and lava flowed down the mountain. tree →
• Hawaii's islands were made by volcanoes. tree →
• We made a model volcano with baking soda and vinegar. tree →
• Mount Vesuvius buried the town of Pompeii in ash. tree →
• An extinct volcano will not erupt again. tree →
• Scientists watch volcanoes for signs of danger. tree →
• New Zealand has several active volcanoes. tree →
• Ash from the volcano stopped planes from flying. tree →
• Does the crater of the volcano know that the glowing lava is pouring from it? tree →

note

Plural «volcanoes» (most common) or «volcanos». Magma is melted rock underground; lava is the same rock once it comes out. A baking soda «volcano» is a model, not a real eruption.

In the corpora

• Bots can hallucinate facts, so every fact in a project must be checked; no volcano has erupted in London.
• Nearly 2000 years ago a volcano buried a Roman town and burned a library of scrolls to black lumps that nobody could open.
• Washing-up liquid in a model volcano traps the carbon dioxide in bubbles and makes foam.
• Real volcanoes erupt melted rock pushed by hot gases deep underground, not by vinegar and soda.
• Lightning striking sand can melt it into glass tubes called fulgurites; volcanoes make a natural black glass called obsidian.

Trees and pragmatics

Every meaning and example of «volcano» parsed by Mova, each sentence with its dependency tree and frames.