1. LIGHT IN THE SKY

2. What are the light bulbs of our universe?

3. STARS!!!! Similarities and differences

4. All light comes from stars.

5. What are stars? Stars are mostly hydrogen that is reacting and making energy

6. All stars are organized on the HR diagram

7. Stars will be in different sections of the HR diagram during their lifetimes.lifetimes. Stars aren’t the same their whole lives

8. Just like the periodic table, if you know how to read it you know a lot about a star based on where it is on the HR diagram.HR diagram.

9. Part 2: How stars make light Quick write time! Short video summary

10. Stars make light through a chemical reaction called Fusion No fusion, no light

11. NUCLEAR FUSION IN THE SUN: H + H He + S U N L I G H T S U N L I G H T

13. In the sun, Hydrogen nuclei are squeezed together to make….

15. Fusion creates our different elements! From the big bang From H/He fusion From supernovas

16. All stars are plasma, the highest energy form of matter. Lets simulate what a star might look like

17. What color is neon? What color is hydrogen? What color is xenon? What color is helium? What color is nitrogen (light bulb)? What gases do you think are in the plasma ball? The tesla coil works by increasing the volts (ability to push and pull electrons) orange pink purple orange purple Hydrogen, nitrogen, xenon

18. Why do the light bulbs light up when touched by the tesla coil? The tesla coil transforms the gas into plasma! Plasma is the 4 th state of matter when electrons are VERY excited (ionized). After the big bang, only plasma existed.

19. What are some applications of plasmas here on Earth? (pictures) High efficiency lighting High density microcircuits Coating for medical implants and recording media Plasma electronics (tvs) Superconducting magnetic research Learning about space science

20. So… How do we know only stars make light?

21. 1.Only stars have a chemical reaction making energy. 2. Rocks and Ice don’t make light. 3. We can see shadows on other objects. Nuclear fusion

22. SOLAR ECLIPSE: “sun is covered”

23. Where is the light coming from? THE SUN

24. What is blocking the sun? THE MOON

25. What a solar eclipse looks like from space On Earth On Jupiter

26. Lets model it! The Sun will be played by The Earth will be played by The Moon will be played by the lamp your head the styrofoam ball

27. The phases of the moon A lunar eclipse A solar eclipse

28. LUNAR ECLIPSE: “moon is covered”

29. Where is the light coming from? THE SUN

30. What is being blocked by shadow? THE MOON

31. What is blocking the light? THE EARTH

32. What a lunar eclipse looks like from Earth

33. Which is the solar eclipse? Solar eclipse Lunar eclipse 1 2

34. Now it’s time to summarize what you have learned by completing the last page individually.