Spectroscopy

Spectroscopy and Star Fingerprints

LT: To understand how spectral lines can identify elements in a star.Terms: Spectroscopy – branch of science that studies the spectrum released when matter releases radiation

Spectroscope – instrument used to observe visible light spectrum

Spectroscopy and Star FingerprintsLT: To understand how a spectral lines can identify elements in a star.

Terms: Spectroscopy – branch of science that studies the spectrum released when matter releases radiation Spectroscope – instrument used to observe visible light spectrum

Emission Spectrum – all wavelength of light released from a body. Consists of lines or bands of colorsAbsorption Spectrum - made of a complete continuous spectrum with black lines missing where wavelength of light are absorbed

Partner A – Explain how spectroscopy works to partner B ( 1 min)

Partner B – Explain in your words how spectroscopy works ( 1 min)

Now - Everybody write three facts down about how spectroscopy works.

Spectroscopy and Star Fingerprints

Each element has its own unique spectrum.

Each element absorbs light of a particular frequency—a particular color. Atoms will absorb the light at that color and produce the line.

By comparing the absorption and emission spectrum- we can find out what stars are made from

ADD TO WHAT YOU WROTE IN YOUR JOURNAL

Emission and Absorption Spectrum are opposites

Mystery Star

Neon