21 Free Solar System Worksheets (PDF) for a Solar System Project - Free Printable

This worksheet is designed to teach children fun facts about the Sun. Below is a completed version of the worksheet with accurate scientific information, along with explanations for each section.

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✔ SUN – Fun Facts Worksheet (Completed)

#### 🔹 Fun Facts (1–3):
1. The Sun is a star — It's a massive ball of hot gas that produces light and heat through nuclear fusion.
2. It provides energy for life on Earth — Plants use sunlight for photosynthesis, and all living things depend on this energy.
3. The Sun has a lifespan of about 10 billion years — It’s currently about halfway through its life.

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#### 🌍 Facts Table

| Distance from the Earth | Location in the Solar System |
|-------------------------------|----------------------------------|
| About 93 million miles (150 million km) | At the center of the solar system |

| Who discovered the Sun? | Year discovered |
|------------------------------|---------------------|
| The Sun has been known since ancient times — it was not "discovered" by one person. But Galileo Galilei used a telescope in 1610 to observe sunspots and confirm it rotates. | 1610 (first detailed observations) |

| What type of star is the Sun? | How many planets revolve around the Sun? |
|------------------------------------|--------------------------------------------|
| A G-type main-sequence star (G dwarf) | 8 planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune) |

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#### 🌞 Additional Information

- The Sun is made of:
Hydrogen (about 74%) and Helium (about 24%), with small amounts of other elements like oxygen, carbon, neon, and iron.

- Color your Sun:
*(This is a coloring activity — typically, the Sun is colored yellow or orange, though it's actually white when viewed directly.)*

- Age of the Sun:
About 4.6 billion years old

- Size or Diameter:
Approximately 864,000 miles (1.39 million km) — About 109 times the diameter of Earth.

- Gravity:
About 28 times stronger than Earth’s gravity — This strong gravity holds the solar system together.

- Surface Temperature:
About 10,000°F (5,500°C) — The core is much hotter, around 27 million °F (15 million °C), where nuclear fusion occurs.

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📝 Explanation of Key Concepts:

- Why is the Sun important?
It gives us light and warmth, drives weather and climate, and supports life through photosynthesis.

- How do we know these facts?
Scientists use telescopes, space probes (like NASA’s Parker Solar Probe), and physics to study the Sun.

- Is the Sun dying?
Not yet — it will continue burning hydrogen for about 5 billion more years, then expand into a red giant before becoming a white dwarf.

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✔ Final Note:
This worksheet is great for learning basic astronomy! While some questions are tricky (like "who discovered the Sun"), they encourage thinking about how science builds knowledge over time.

Let me know if you'd like a printable version or want to add illustrations! 🌞🚀