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Here is the completed solution for both parts of the worksheet: labeling the diagram and matching vocabulary terms with their descriptions.

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## Part 1: Label the Diagram of the Sun

Based on standard solar structure diagrams, here are the correct labels for each numbered part:

1. Corona — The outermost layer of the Sun’s atmosphere, visible during a total solar eclipse as a glowing halo.
2. Chromosphere — The middle layer of the Sun’s atmosphere; appears reddish during eclipses.
3. Photosphere — The visible “surface” of the Sun that emits most of the sunlight we see.
4. Prominence — A large, bright feature extending outward from the Sun’s surface, often in a loop shape (shown as the arching structure above the surface).
5. Core — The central region where nuclear fusion occurs, producing the Sun’s energy.
6. Convection Zone — The outer layer of the Sun’s interior where energy is transferred by convection currents (rising hot plasma and sinking cooler plasma).

> *Note: Some diagrams may label the “Radiation Zone” between Core and Convection Zone — but since only 6 lines are provided and no line points to the radiation zone specifically, we assign the most prominent layers shown. If a line were pointing to the layer just outside the core, it would be the Radiation Zone. In this diagram, line 6 likely points to the convection zone, which is the outermost interior layer before the photosphere.*

✔ Final Labels:
- 1 → Corona
- 2 → Chromosphere
- 3 → Photosphere
- 4 → Prominence
- 5 → Core
- 6 → Convection Zone

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## Part 2: Building Vocabulary — Match Terms with Descriptions

Match each term (7–17) with the correct lettered description (a–k):

| Term | Letter | Description |
|-------------------|--------|-----------------------------------------------------------------------------|
| 7. solar flare | f | eruptions that occur when the loops in sunspot regions suddenly connect |
| 8. core | h | the center of the sun |
| 9. chromosphere | b | the layer of the sun’s atmosphere that has a reddish glow |
| 10. sunspot | d | areas of gas on the sun’s surface that are cooler than the gases around them|
| 11. corona | c | the layer of the sun’s atmosphere that looks like a halo during an eclipse |
| 12. nuclear fusion| j | the joining of hydrogen atoms to form helium |
| 13. photosphere | a | the layer of the sun’s atmosphere that gives off visible light |
| 14. solar wind | g | a stream of charged particles produced by the corona |
| 15. prominence | e | reddish loops of gas that link parts of sunspot regions |
| 16. radiation zone| k | the layer of the sun’s interior where energy is transferred mainly by electromagnetic radiation |
| 17. convection zone| i | the outermost layer of the sun’s interior |

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## ✔ Final Answer Key:

Diagram Labels:

1. Corona
2. Chromosphere
3. Photosphere
4. Prominence
5. Core
6. Convection Zone

Vocabulary Matching:

7. f
8. h
9. b
10. d
11. c
12. j
13. a
14. g
15. e
16. k
17. i

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## 💡 Explanation Summary:

- The Sun’s structure consists of an interior (core, radiation zone, convection zone) and an atmosphere (photosphere, chromosphere, corona).
- Nuclear fusion happens in the core, turning hydrogen into helium and releasing energy.
- Energy moves outward through the radiation zone via photons, then through the convection zone via rising/sinking plasma.
- The photosphere is what we see as the Sun’s “surface.” Above it are the chromosphere (reddish) and corona (halo-like outer atmosphere).
- Sunspots are cooler, darker regions caused by magnetic activity.
- Solar flares and prominences are dramatic events linked to magnetic fields.
- The solar wind is a constant stream of charged particles escaping the corona.

This worksheet helps reinforce understanding of how the Sun works — from its inner energy production to its dynamic outer atmosphere.

Let me know if you’d like a printable version or flashcards for review! 🌞