2.2 Our Sun, the Star! Vocabulary

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.

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.