Back to worksheetsOur worldAges 10-12
Our solar system
Recall key facts about planets, moons and our solar system from a verified question bank. Review suitability for your learners before teaching.
Worksheet StudioPractice pack · Ages 10-12
Our solar system
Take your time. Show your thinking.
1. What is Earth’s natural satellite called?
2. Does the Moon produce its own light or reflect light from the Sun?
3. What is the largest planet in our solar system?
4. Which planet is closest to the Sun?
5. What galaxy is our solar system located in: the Milky Way or Andromeda?
6. What nuclear process in the Sun’s core releases light and heat energy: nuclear fusion of hydrogen into helium, or burning coal?
7. How many planets are in our solar system (excluding dwarf planets): 8 or 12?
8. Which planet is famous for its bright, extensive system of icy rings: Saturn or Mercury?
9. How long does Earth take to complete one full rotation on its axis: 24 hours or 365 days?
10. What lies at the centre of our solar system: the Sun or the Moon?
11. Where is the main asteroid belt located: between Mars and Jupiter, or between Earth and Venus?
12. What is Saturn’s largest moon, which has a dense nitrogen-rich atmosphere: Titan or Phobos?
12 questions · Seed 44 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 10-12
Our solar system
Answers and reasoning. Review before teaching.
1. What is Earth’s natural satellite called?
The MoonThe Moon is the natural rocky satellite that orbits Earth.
2. Does the Moon produce its own light or reflect light from the Sun?
Reflects light from the SunThe Moon shines because its surface reflects sunlight toward Earth.
3. What is the largest planet in our solar system?
JupiterJupiter is the largest of the eight planets in our solar system.
4. Which planet is closest to the Sun?
MercuryMercury has the smallest orbit of the eight planets.
5. What galaxy is our solar system located in: the Milky Way or Andromeda?
The Milky WayOur solar system is part of the Milky Way spiral galaxy.
6. What nuclear process in the Sun’s core releases light and heat energy: nuclear fusion of hydrogen into helium, or burning coal?
Nuclear fusion of hydrogen into heliumThe Sun fuses hydrogen nuclei into helium under extreme core temperature and pressure.
7. How many planets are in our solar system (excluding dwarf planets): 8 or 12?
8The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
8. Which planet is famous for its bright, extensive system of icy rings: Saturn or Mercury?
SaturnSaturn is surrounded by prominent rings made of ice and rock particles.
9. How long does Earth take to complete one full rotation on its axis: 24 hours or 365 days?
24 hoursEarth rotates once on its axis every 24 hours, giving us day and night.
10. What lies at the centre of our solar system: the Sun or the Moon?
The SunThe Sun is the star at the centre of our solar system, and all planets orbit it.
11. Where is the main asteroid belt located: between Mars and Jupiter, or between Earth and Venus?
Between Mars and JupiterMost rocky asteroids orbit in the belt between Mars and Jupiter.
12. What is Saturn’s largest moon, which has a dense nitrogen-rich atmosphere: Titan or Phobos?
TitanTitan is Saturn’s largest moon and the second-largest moon in the solar system.
12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 10-12
Our solar system
Take your time. Show your thinking.
1. What is Earth’s natural satellite called?
2. Does the Moon produce its own light or reflect light from the Sun?
3. What is the largest planet in our solar system?
4. Which planet is closest to the Sun?
5. What galaxy is our solar system located in: the Milky Way or Andromeda?
6. What nuclear process in the Sun’s core releases light and heat energy: nuclear fusion of hydrogen into helium, or burning coal?
7. How many planets are in our solar system (excluding dwarf planets): 8 or 12?
8. Which planet is famous for its bright, extensive system of icy rings: Saturn or Mercury?
9. How long does Earth take to complete one full rotation on its axis: 24 hours or 365 days?
10. What lies at the centre of our solar system: the Sun or the Moon?
11. Where is the main asteroid belt located: between Mars and Jupiter, or between Earth and Venus?
12. What is Saturn’s largest moon, which has a dense nitrogen-rich atmosphere: Titan or Phobos?
12 questions · Seed 44 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 10-12
Our solar system
Answers and reasoning. Review before teaching.
1. What is Earth’s natural satellite called?
The MoonThe Moon is the natural rocky satellite that orbits Earth.
2. Does the Moon produce its own light or reflect light from the Sun?
Reflects light from the SunThe Moon shines because its surface reflects sunlight toward Earth.
3. What is the largest planet in our solar system?
JupiterJupiter is the largest of the eight planets in our solar system.
4. Which planet is closest to the Sun?
MercuryMercury has the smallest orbit of the eight planets.
5. What galaxy is our solar system located in: the Milky Way or Andromeda?
The Milky WayOur solar system is part of the Milky Way spiral galaxy.
6. What nuclear process in the Sun’s core releases light and heat energy: nuclear fusion of hydrogen into helium, or burning coal?
Nuclear fusion of hydrogen into heliumThe Sun fuses hydrogen nuclei into helium under extreme core temperature and pressure.
7. How many planets are in our solar system (excluding dwarf planets): 8 or 12?
8The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
8. Which planet is famous for its bright, extensive system of icy rings: Saturn or Mercury?
SaturnSaturn is surrounded by prominent rings made of ice and rock particles.
9. How long does Earth take to complete one full rotation on its axis: 24 hours or 365 days?
24 hoursEarth rotates once on its axis every 24 hours, giving us day and night.
10. What lies at the centre of our solar system: the Sun or the Moon?
The SunThe Sun is the star at the centre of our solar system, and all planets orbit it.
11. Where is the main asteroid belt located: between Mars and Jupiter, or between Earth and Venus?
Between Mars and JupiterMost rocky asteroids orbit in the belt between Mars and Jupiter.
12. What is Saturn’s largest moon, which has a dense nitrogen-rich atmosphere: Titan or Phobos?
TitanTitan is Saturn’s largest moon and the second-largest moon in the solar system.
12 questions · Seed 44 · Age guidance, not curriculum certification