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Astronomy 100 Starlight, Starbright. Star light, star bright First star I see tonight I wish I may, I wish I might Have the wish I wish tonight.

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Presentation on theme: "Astronomy 100 Starlight, Starbright. Star light, star bright First star I see tonight I wish I may, I wish I might Have the wish I wish tonight."— Presentation transcript:

1 Astronomy 100 Starlight, Starbright

2 Star light, star bright First star I see tonight I wish I may, I wish I might Have the wish I wish tonight

3 ANSWER NOW: (You will turn this in) Write, discuss, sketch, label – somehow communicate your knowledge and understanding of the electromagnetic spectrum. If you dont think you have one, write/discuss/sketch/label a rainbow instead. Tell me everything you can. 1 st GOAL: Understand spectra. – Vocabulary: wavelength, spectra, continuous spectrum, emission spectrum, absorption spectrum, black-body spectrum, electron, energy levels, excited, Doppler effect, red shift, blue shift, metallicity

4 Antonine-education.co.uk

5 Different wavelengths are different colors. Different wavelengths are different energies. Different colors are different energies. If you look directly at a heat source – you get ALL POSSIBLE COLORS – continuous spectrum or black body spectrum. If you look at a heated gas you get some colors because its not heat, its excited electrons.

6 Continuous Spectrum (Heat)

7 Physics.uiowa.edu

8 upei.ca

9 Spectra Activity

10 physics.umd.edu

11

12 Classification Activity

13 OBAFGKM Spectra KPNO.9m Telescope, AURA, NOAO, NSF

14 Solar Spectrum

15 odin.physastro.mnsu.edu

16 Sgo Sgo s s t63xYSgmKE t63xYSgmKE

17 Review: (You will turn this in) Define three of these terms: – Metallicity – Spectrum – Excited – Spectra – Doppler effect – Red shift


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