You can directly sample gas and analyze it using various chemical tests. You can use an instrument called a correlation spectrometer or COSPEC to measure the gas emissions from a distance. These measurements are usually done from an airplane.
correlation spectrometer
You would use a correlation spectrometer.
False
Because the increasing levels of sulfur dioxide coming from the volcano indicated to scientists that magma was moving towards the surface.
A mixture of water vapour, sulphur oxides, nitrogen oxides and carbon dioxide. Also various amounts of ash, dust and trace gases.
the plume is the smoke coming out
Shoot an Ice Arrow at the lava coming from the top of the volcano.
lava
No, carbon dioxide does not. it does not stop UV rays from the sun from coming to surface.
Probably Dr Strange Glove he must have done something to the volcano.
ash glass rock lava
at least 180 degrees celcius