Across
- 2. A method of observing the Sun safely
- 4. What nuclei are joined together in the first step of the proton-proton cycle?
- 6. As the Sun rotates, sunspots move along lines of ______
- 7. What is the element produced at the end of the proton-proton cycle?
- 10. Because they are cooler than the photosphere, sunspots appear _________
- 13. In nuclear fusion, energy is released due to a decrease in ______
- 15. The Sun's average __________ period is around 27 days
- 16. During the solar cycle, the ________ at which sunspots appear changes
- 18. Where fusion takes place in the Sun
- 19. The solar wind is made up of _________ and _________ charged particles
- 20. The solar wind causes an ____ tail from comets that points directly away from the Sun
- 23. The Sun's _______ ________ is approximately 11 years
- 24. Sunspots reduce _______ currents at the Sun's surface
- 25. Geomagnetic storms are dangerous for _________
- 27. Sunspots are created by areas of that have a strong _______ _________
- 30. The coolest section of a sunspot
- 31. Geomagnetic storms are dangerous for _________
Down
- 1. Over time, sunspots will break up and _________
- 3. The visible surface of the Sun
- 5. The Sun rotates ______ at its poles
- 8. Fusion requires very high temperature and pressure to overcome electrostatic __________
- 9. The hottest part of the Sun's atmosphere
- 11. Positive and negative particles are trapped by the Earth's magnetic field in the ____ ______ ______
- 12. The bottom layer of the Sun's atmosphere
- 14. The zone immediately before the photosphere
- 17. __________ __________ _________ can cause geomagnetic storms
- 21. One effect of solar wind. When charged particles excite atoms in the Earth's atmosphere, causing them to fluoresce
- 22. A method of observing the Sun safely
- 26. The Earth's magnetic field _________ humans from solar wind
- 28. The outer section of a sunspot
- 29. The zone immediately after the core