The Sun: A labeled diagram of the Sun's structure and a vocabulary matching activity for understanding solar features.

Let's solve this step-by-step.

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Part 1: Labeling the Diagram of the Sun

We are given a diagram of the Sun with numbered labels (1–6). We need to identify what each number refers to based on the structure of the Sun.

#### Structure of the Sun (from inside out):
1. Core – The innermost part where nuclear fusion occurs.
2. Radiation Zone – Surrounds the core; energy moves via radiation.
3. Convection Zone – Outer layer of the interior where energy is carried by convection currents.
4. Photosphere – The visible surface of the Sun; emits light.
5. Chromosphere – A layer above the photosphere, reddish in color.
6. Corona – The outermost atmosphere, visible during solar eclipses as a halo.

Now let’s match the numbers:

- 1. → Corona (outermost atmosphere, shown as spiky rays)
- 2. → Core (central region)
- 3. → Convection Zone (just outside the radiation zone)
- 4. → Photosphere (visible surface layer)
- 5. → Chromosphere (layer above photosphere)
- 6. → Sunspot (dark spots on the photosphere)

Wait — actually, looking at the diagram more carefully:

- Number 6 points to dark spots on the surface — these are sunspots.
- Number 5 is just above the surface — that's the chromosphere.
- Number 4 is the outermost layer — corona.
- Number 1 is pointing to the photosphere? Wait — let’s re-evaluate.

Actually, let’s look at the positions:

- 1 points to the top outer edge — likely corona.
- 2 points to the center — core.
- 3 points to the inner layer between core and outer layers — radiation zone?
But wait — the diagram shows:
- Inner circle: core
- Middle layer: radiation zone
- Outer layer: convection zone
- Then surface: photosphere
- Above that: chromosphere
- Outermost: corona

So:

- 1: Corona (spiky outer layer)
- 2: Core (center)
- 3: Convection Zone (the thick layer around the core)
- 4: Photosphere (surface layer)
- 5: Chromosphere (thin layer above photosphere)
- 6: Sunspot (dark areas on surface)

But 6 is not a structural layer — it's a feature on the surface.

So correct labeling:

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

✔ That matches standard solar structure.

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Part 2: Building Vocabulary – Match Terms to Descriptions

We have terms (7–17) and descriptions (a–k). Match them.

Let’s go one by one.

#### 7. solar flare
→ Eruptions from sunspot regions when magnetic loops connect → f

#### 8. core
→ The center of the sun → h

#### 9. chromosphere
→ Layer with reddish glow → b

#### 10. sunspot
→ Cooler areas on the surface → d

#### 11. corona
→ Looks like a halo during eclipse → c

#### 12. nuclear fusion
→ Joining hydrogen atoms to form helium → j

#### 13. photosphere
→ Gives off visible light → a

#### 14. solar wind
→ Stream of charged particles from corona → g

#### 15. prominence
→ Reddish loops of gas linking sunspot regions → e

#### 16. radiation zone
→ Energy transferred by electromagnetic radiation → k

#### 17. convection zone
→ Outermost layer of sun’s interior → i

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✔ Final Answers

#### Diagram Labels:
1. Corona
2. Core
3. Convection Zone
4. Photosphere
5. Chromosphere
6. Sunspot

#### Vocabulary Matching:
7. solar flare → f
8. core → h
9. chromosphere → b
10. sunspot → d
11. corona → c
12. nuclear fusion → j
13. photosphere → a
14. solar wind → g
15. prominence → e
16. radiation zone → k
17. convection zone → i

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✔ Summary Answer

Diagram Labels:
1. Corona
2. Core
3. Convection Zone
4. Photosphere
5. Chromosphere
6. Sunspot

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

This completes the worksheet accurately!