“The Sun: Crash Course Astronomy #10”
1. The sun is a ______________________________________________________.
2. The vast majority of stars are much BIGGER SMALLER than the sun.
3. The sun is comprised mostly of _____________________________________________ gas.
4. If hydrogen is “ionized”, that means the ______________________ have been stripped from the atoms.
5. What famous equation describes what happens when protons comes together? ____________________
6. Hydrogen fusion occurs is the _____________________________________ of the sun.
7. What process transfers the heat throughout the sun? _______________________________________
8. The “sphere of light” is the ________________________________________________________.
9. The sun’s atmosphere is the _______________________________________________________________.
10. How long does it take light to reach the surface of the sun (by modern standards)? _____________________
11. The sun is not exactly a gas. It’s better to call it a _______________________________________________.
12. A dark, cooler spot on the surface of the sun is called a ______________________________________.
13. Sunspots INCREASE DECREASE the energy output of the sun.
14. When magnetic field lines snap, and as a result explode outward we get a ____________________________.
15. If a solar flare is like a tornado, a coronal mass ejection is like a ______________________________________.
16. When the Earth’s magnetic field interacts with the ejected material from the sun, we get ________________.
19. The first solar storm ever detected was in _____________________________________.
20. If the solar storm of 2012 had hit us, we’d have recovered by now. TRUE FALSE
“Stars: Crash Course Astronomy #26”
A ___________________________ is the result when you divide the light from an incoming object into different wavelengths.
Stars emits light at ALL A FEW SPECIFIC wavelengths.
Cecelia Payne-Gaposchkin was the physicist who was able to put everything together, showing that the spectra of stars depended on the _____________________________ and the ________________________ in their atmospheres. She showed that stars were mainly ____________________ with the next most abundant element being ______________________.
Cannon and Gaposchkin’s classification system is still used today. It arranges stars by their ____________________________, assigning each a letter: O, B, A, F, G, K, M. Each letter group is divided into ______ subgroups. The sun is classified as a ________ star.
Because of the way our eyes see color, there are no ___________________ stars. The sun actually peaks in the green range, however the light from the sun is _______________________________.
___________________________ is how much light a star is actually giving off.
The best way to study a large group of objects is to look for ________________________________.
The H-R diagram is the single most important graph in all of astronomy. TRUE FALSE
A star that fuses hydrogen faster will be HOTTER COOLER
The stars on the lower left are called ____________________________. The stars on the upper right are called red, or super ________________________________.
Massive stars age the same as low-mass stars. TRUE FALSE