Aces Training Keep your Aces Answer Sheet Worth

Aces Training • • Keep your Aces Answer Sheet! Worth a large Test. (100 pts) 1. Pick-up Aces “Warm-up” on back table. 2. Turn-in answer sheet before we go over it. 3. Turn-in questions. 4. Pick-up both at beginning of period on back table.

Strategy Review. 1. Know your enemy 2. 2 -pass method 3. Focus Words 4. P. O. E.

#31 #32 #34 #33 #35

#36 #37

Galaxies Colliding.

“Studying the Sun” Chapter 24

Electromagnetic Radiation • Light waves • Energy • Different wavelengths

Spectroscopy • Properties of light due to wavelength

Studying Stars with Spectroscopy • Spectral lines = “fingerprints” • Show elements in star. • Composition.

Refracting Telescope • Uses lens to bend and focus light.

Reflecting Telescope • Uses concave mirror to focus light.

Radio Telescope • Observations in radio wavelengths • Less jiggly

Space Telescopes • Orbit above atm • Clearer images

Assignment! – GR. 24. 1 For Stamp!

Sun Facts • • • An “Average” Star Diameter = 109 x Earth Volume = 1, 250, 000 x Earth Mass = 332, 000 x Earth Density = ¼ x Earth? !

4 Parts of Sun 1. Solar Interior 2. Photosphere – Visible Surface 3. Chromosphere 4. Corona

Photosphere • The light we see • “Surface” of sun

Chromosphere • Thin layer • Hot gases • Sun’s Atm.

Corona • Outer Solar Atm. • Seen only when photosphere is covered

Nuclear Fusion • Produces energy • Hydrogen + Hydrogen Helium + Energy!

Nuclear Bombs.

Radiation Burns High School Girl Radiation Burns.