Across
- 2. The central or innermost part of any celestial body (including Earth and the Sun).
- 3. The strength or power of something, such as the brightness of a star or the amount of energy released by an earthquake.
- 5. A light, colorless gas that does not burn. It is used to fill airships and balloons.
- 9. A hot blue star with a radius 5–10 times the radius of the sun.
- 10. Sudden bursts of burning gases from a small part of the surface of the sun.
- 12. A bright streak of light that flashes in the night sky when a rocky object enters the Earth’s atmosphere. Are also called shooting stars.
- 13. A gas with no smell or color that is lighter than air and catches fire easily.
- 14. A glowing, transparent layer of gas surrounding the photosphere of a star, especially the sun.
Down
- 1. The colors of the light emitted by a star.
- 2. A region of turbulent plasma within the sun and other stars where energy travels outward to the photosphere through convection.
- 4. A star that is cool, small, and very faint. They burn very slowly and live for about 100 billion years.
- 6. An interior layer of a star just outside the core.
- 7. The layer of gas that is the visible surface of the sun or another star.
- 8. A celestial body like the sun that generates light and other radiant energy and consists of a mass of burning gas, seen in the sky at night as a glowing point of light.
- 11. The mixture of gases that surrounds a planet.