Match the following. match the items in the left column to the items in the right column. 1. correlation spectrometer instrument used to measure ground swelling 2. plume gassy smoke released by a volcano 3. tiltmeter instrument used to measure volcanic gases

1. Correlation spectrometer: instrument used to measure volcanic gases.

2. Plume: gassy smoke released by a volcano.  

3. Tiltmeter: instrument used to measure ground swelling.  

Explanation:

A correlation spectrometer (COSPEC) is meant to measure the sulfur dioxide in a volcanic plume. It analyzes the solar ultraviolet light absorbed by sulfur dioxide to an inner standard. Reliable results are best-obtained.

Plume is a combination of volcanic scraps, fumes, and entrained air that are created in volcanic explosions.

A tiltmeter is an inclinometer intended to measure rather tiny variations from the vertical level, both on the ground or in constructions.