1. Today is Wednesday, June 5th, 2013
Homework:
Complete rockets (launch is THIS FRIDAY!!!!)
Understand how Newton’s Third Law of Motion makes YOUR particular rocket work!
Warm UP:
With your shoulder partner, discuss what you know about the center of our solar system? Is the sun the only star in the sky? Do you know the names of any other stars in the sky?

2. Goal for Today
SWBAT demonstrate an understanding of the characteristic of stars by exploring the sun as an example and looking at examples of other stars.

3. Only write down the BLUE text…
Date: Wednesday, June 5th, 2013
Title: Stars

4. Star
A gigantic ball of very hot gases (hydrogen and helium) reacting by the process of nuclear fusion that give off electromagnetic radiation.

5. Relative Size of Planets and the Sun Putting Earth in Perspective

6. Rocky (Terrestrial) Planets (and Pluto) in our Solar System

7. Terrestrial planets (and Pluto) with gas giants
(rings not shown)

8. All planets in the Solar System, plus Pluto,
and the Sun

9. The Sun in relation to large orange giant stars
and Sirius (White Dwarf)

10. The Sun in relation to Red Supergiant stars Betelgeuse and Antares

11. Types of Stars

12. Factors that affect the brightness of a star as seen from Earth:
Size
Distance from Earth
Temperature
Red is the coolest (but generally the largest in volume)
Orange and yellow are slightly hotter
White or blue-white stars are the hottest

13. The Sun A medium-heat (a little on the cooler side) Yellow Star at the center of our Solar System

14. Layers of the Sun’s Atmosphere
Photosphere – 6,000 K
Chromosphere – 10,000 K
Chromosphere/Corona Transition
Region – 30,000 to 500,000 K
Prominence – 10,000 K
Corona – 1,500,000 K

15. Artist’s Depiction

16. The Sun’s corona can be seen very well during a Solar Eclipse
(NEVER LOOK DIRECTLY AT THE SUN, EVEN DURING AN ECLIPSE,
WITHOUT PROPER PROTECTION!!!)

17. Darker spots on the photosphere that are cooler than areas around it
Sun Spots
Darker spots on the photosphere that are cooler than areas around it

18. Sun spots On a clear day, the sun looks like this

19. Sun Spots!

20. Loops and fountains of blazing gases that leap out of the chromosphere
Prominences
Loops and fountains of blazing gases that leap out of the chromosphere

23. Parts of the chromosphere that erupt like a volcano
Solar Flares
Parts of the chromosphere that erupt like a volcano

26. Solar Flares interacting with Earth’s magnetic field

27. The effects of solar flares interacting
with Earth’s magnetic field (auroras)
as seen from Earth’s surface and
near-Earth orbit

28. Largest flare every recorded November 4, 2003

29. Closing it up…
What kind of activity on the surface of the Sun can disrupt Earth’s magnetic field
Solar Flares
What type of star is our Sun?
Yellow Star
What are the hottest stars in the sky?
Blue and white stars