scientists use the emission spectra of elements to detect\na explosives in luggage.\nb cracks in support…

scientists use the emission spectra of elements to detect\na explosives in luggage.\nb cracks in support structures, like bridges.\nc the possibility of an earthquake occurrence.\nd elements in clouds of gas and dust in deep space

scientists use the emission spectra of elements to detect\na explosives in luggage.\nb cracks in support structures, like bridges.\nc the possibility of an earthquake occurrence.\nd elements in clouds of gas and dust in deep space

Answer

Brief Explanations:

Emission spectra are unique to each element. By analyzing the light emitted from a source (such as clouds of gas and dust in space), scientists can identify the elements present. Explosives detection in luggage is often done using methods like X - ray or trace detection. Cracks in structures are detected using non - destructive testing like ultrasonic or visual inspection. Earthquake possibility is predicted using seismological data, plate tectonic studies etc.

Answer:

D. elements in clouds of gas and dust in deep space