大象传媒

Volcanoes emit millions of tonnes of gas into the atmosphere every day, but which gases are being produced? A small volcano from New Zealand is active and scattering dust, smoke and vapour every day. A vulcanologist is investigating which gases are produced by the volcano. He collects the samples by inserting a tube inside the volcano. He identifies the main gases produced as water vapour (80%) and carbon dioxide (15%). Sulphur and hydrogen chloride are also produced.