Unit 15 Vocab Preview

3. An object in space whose gravity is so strong not even light can escape.
5. The process by which two or more small nuclei fuse to make a bigger nucleus
7. The layer of the sun's atmosphere above the photosphere
9. A shell of cooler hydrogen above a star's core
10. The small, dense remains of a high-mass star after a supernova
11. An eclipse that Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
13. A large cloud of dust and gas in space
14. A solar eclipse during which the Sun becomes fully blocked by the disk of the Moon
17. A small, hot, dim star that is the leftover center of an old star
20. An eclipse when the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
21. Time when the Sun is farthest from the equator.
23. The outer layer of the sun's atmosphere.
24. A large ball of gas held together by gravity with a core so hot that nuclear fusion occurs

1. When the prominence escapes the sun it becomes a coronal mass ejection
2. Where hot gas moves up toward the surface and cooler gas moves deeper into the interior
4. The visible surface of the sun
6. A contracting cloud of gas and dust with enough mass to form a star
8. A loop of gas that protrudes from the sun's surface, linking parts of sunspot regions
11. Violent eruptions of particles and radiation from the surface of the Sun
12. A continuous stream of charged particles from the Sun
15. A dark area of gas on the sun's surface that is cooler than surrounding gases.
16. A gigantic explosion in which a massive star collapses and throws its outer layers into space
17. The phase where less of the Moon's near side is lit each night
18. The two days of the year on which neither hemisphere is tilted toward or away from the sun
19. The phase where more of the Moon's near side is lit each night
22. A solar eclipse during which the Moon is directly in front of the Sun but its angular size is not large enough to fully block the Sun