1. LIGHT IN THE SKY
By Miss Guibert

2. What are the light bulbs of our universe?

3. STARS!!!!

4. All light comes from stars.

5. What are stars?
Stars are mostly hydrogen that is reacting and making energy
What are other things that look like they make light?

7. In the nebula, Hydrogen nuclei are squeezed together to make….

9. Hydrogen & Helium are the nebula gases.
Picture of periodic table of elements

10. NUCLEAR FUSION:
H + H He (and sunlight)

11. Stars combine Hydrogen atoms to produce Helium in a process called…
FUSION!
Click the word above to watch the video clip

12. Let’s take a look at plasmas and light
The tesla coil works by increasing the volts (ability to push and pull electrons) 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?

13. Why do the light bulbs light up when touched by the tesla coil?
The tesla coil transforms the gas into plasma! Plasma is the 4th state of matter when electrons are VERY excited (ionized). After the big bang, only plasma existed. Let’s watch this clip and see if you can correctly answer the question Let’s watch this clip for the correct answer.

14. 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

15. Let’s review the life cycle of a star
What are nebulas and what are they made of?

16. Astronomers use an H-R diagram to organize and show patterns of stars, similar to how chemists use the periodic table.
Learn more here: And here:

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

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

19. Where is the light coming from?
THE SUN

20. What is blocking the light?
THE EARTH

21. What is being covered by shadow?
THE MOON

22. LUNAR ECLIPSE:
“moon is covered”

23. Where is the light coming from?
THE SUN

24. What is blocking the sun?
THE MOON

25. SOLAR ECLIPSE:
“sun is covered”

26. Which is the solar and lunar eclipse?
Solar eclipse
Lunar eclipse

27. Let’s model both eclipses!

28. Now complete the handout