1. Astronomy 100
Starlight, Starbright

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

3. 1st GOAL: Understand spectra.
ANSWER NOW: (You will turn this in) Write, discuss, sketch, label – somehow communicate your knowledge and understanding of the electromagnetic spectrum. If you don’t think you have one, write/discuss/sketch/label a rainbow instead. Tell me everything you can.
1st 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
6:35 (40 minutes) Heat= color. Black body = collisions. Even with elastic collisions, you lose some energy. Energy = light
The nature of light. Light is energy. Photons are wavicles
Atoms – electrons – energy levels.
Wavelength – diff amounts of energy image page 103
7:15 (15 minutes) Break7:30 (30 minutes)
Continuous spectrum – black body Planck Curve Emission Spectrum Light Decoders
Absorption Spectrum
Types of Stars/Types of Spectra
Metallicity – how come there’s more than just Hydrogen lines?
Annie Jump Cannon!
OBAFGKMHow Spectra Look Now
Doppler Effect
Red-shift
Blue-shift8:00 (5 minutes)
Review8:05 (15 minutes) Introduce 2 assignments, and make groups.

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 it’s not heat, it’s excited electrons.

6. Continuous Spectrum (Heat)

7. Physics.uiowa.edu

8. upei.ca

9. Spectra Activity

10. physics.umd.edu

12. Classification Activity

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

14. Solar Spectrum

15. odin.physastro.mnsu.edu

17. Review: (You will turn this in)
Define three of these terms:
Metallicity
Spectrum
Excited
Spectra
Doppler effect
Red shift
6:35 (40 minutes) Heat= color. Black body = collisions. Even with elastic collisions, you lose some energy. Energy = light
The nature of light. Light is energy. Photons are wavicles
Atoms – electrons – energy levels.
Wavelength – diff amounts of energy image page 103
7:15 (15 minutes) Break7:30 (30 minutes)
Continuous spectrum – black body Planck Curve Emission Spectrum Light Decoders
Absorption Spectrum
Types of Stars/Types of Spectra
Metallicity – how come there’s more than just Hydrogen lines?
Annie Jump Cannon!
OBAFGKM
How Spectra Look Now
Doppler Effect
Red-shift
Blue-shift8:00 (5 minutes)
Review8:05 (15 minutes) Introduce 2 assignments, and make groups.