Solar System Planet Worksheets: Kindergarten, 1st, 2nd, 3rd Grade - Free Printable

Let's solve the "Solar System Match Up" worksheet step by step.

We are given 9 descriptions and need to match each one to the correct planet from the list on the right:
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto

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Step-by-step matching:

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1. The largest planet in the solar system.
→ Jupiter
✔ Jupiter is the largest planet in our solar system — it's a gas giant and more than twice as massive as all the other planets combined.

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2. The sixth planet from the sun in the solar system.
→ Saturn
✔ Order of planets from the Sun:
1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune
So, the 6th is Saturn.

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3. The brightest planet in the solar system.
→ Venus
✔ Venus is the brightest planet because it reflects a lot of sunlight due to its thick, reflective cloud cover. It’s often visible as the "morning star" or "evening star".

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4. The planet with the nickname “Red Planet”.
→ Mars
✔ Mars is called the "Red Planet" because of its reddish appearance caused by iron oxide (rust) on its surface.

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5. The coldest planet in the solar system.
→ Neptune
✔ Although Pluto was once thought to be the coldest, Neptune is now known to be the coldest planet among the eight. It has average temperatures around -214°C (-353°F). Even though it's farther out, Uranus is colder, but Neptune is actually colder due to internal heat sources. However, Uranus is technically colder than Neptune. But in most educational contexts, Neptune is considered the coldest *planet* (due to its distance and lack of internal heat), though Uranus is colder.

Wait — let’s clarify:

- Uranus is colder than Neptune despite being closer to the Sun.
- But Neptune is colder than expected due to distance and low internal heat.
- However, actual measurements show Uranus has lower temperatures.

But in many school-level curricula, Neptune is taught as the coldest planet.

✔ So for this level, we’ll go with Neptune as the answer.

> Note: Scientifically, Uranus is colder, but since Neptune is farthest and often associated with coldness, and the question says “coldest planet,” Neptune is acceptable here.

But wait — let’s double-check:
- Uranus: ~ -224°C
- Neptune: ~ -214°C

So Uranus is colder.

Therefore, the correct answer should be Uranus.

✔ So 5. The coldest planet → Uranus

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6. A dwarf planet in the solar system.
→ Pluto
✔ Pluto was reclassified as a dwarf planet in 2006 by the IAU. It’s no longer considered a full planet.

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7. The planet closest to the sun in the solar system.
→ Mercury
✔ Mercury is the closest planet to the Sun.

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8. The planet farthest from the sun in the solar system.
→ Neptune
✔ Neptune is the eighth and outermost planet in the solar system.

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9. The only known planet to support life.
→ Earth
✔ Earth is the only planet known to harbor life.

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Final Answers:

| # | Description | Correct Planet |
|---|-------------|----------------|
| 1 | The largest planet in the solar system. | Jupiter |
| 2 | The sixth planet from the sun in the solar system. | Saturn |
| 3 | The brightest planet in the solar system. | Venus |
| 4 | The planet with the nickname “Red Planet”. | Mars |
| 5 | The coldest planet in the solar system. | Uranus *(Note: scientifically accurate)* |
| 6 | A dwarf planet in the solar system. | Pluto |
| 7 | The planet closest to the sun in the solar system. | Mercury |
| 8 | The planet farthest from the sun in the solar system. | Neptune |
| 9 | The only known planet to support life. | Earth |

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✔ Summary of Matches:

1. Jupiter
2. Saturn
3. Venus
4. Mars
5. Uranus
6. Pluto
7. Mercury
8. Neptune
9. Earth

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This completes the Solar System Match Up! 🌍✨