Where Do Chemical Elements Come From? page 3

What technique do scientists use to determine which chemical elements are formed inside stars?

• Visible spectroscopy

• X-ray diffraction

• Mass spectrometry

• Electron microscopy

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Remembering

The emission spectrum of hydrogen consists of how many lines?

• Four

• Five

• Six

• Seven

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Remembering

Atoms and molecules produce their own 'fingerprint' or 'signature' when the light they emit is spread in a ___.

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Understanding

What is the main component of the gas in an interstellar cloud?

• Hydrogen

• Helium

• Oxygen

• Carbon

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Remembering

The process by which a supernova spews its newly made elements into space is called ___.

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Understanding

The nitrogen in our DNA and the calcium in our teeth were made in the interiors of ___.

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Understanding