The Solar System
The path a planet follows around the Sun is called an orbit.

The Solar System

This KS2 Science quiz is all about our solar system. That's everything which orbits the Sun, including the planets - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The Solar System includes the Sun, the planets which orbit it, the moons which orbit the planets and everything else which orbits the Sun, such as comets and asteroids. People have always been intrigued by the planets - these mysterious heavenly bodies in the night sky. No wonder they gave them the names of gods! Jupiter was the king of the Roman gods, Mars was their god of war, Neptune their god of the sea and Venus their goddess of love.

Do you know which planet is the largest, or what Saturn's rings are made of? Get out your telescope as we take a closer look at our nearest neighbours in this quiz on the Solar System!

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  1. What are Saturn's rings made of?
    Saturn's seven rings are made of ice particles which travel in orbit around the planet
  2. What is the Sun?
    The Sun is our nearest star - it's only 148 million km away!
  3. Which planet is closest to the Sun?
    Mercury is 46 million km from the Sun
  4. What do we call the path a planet follows around the Sun?
    An orbit is the path an object in space follows around another object - the Moon orbits the Earth, which orbits the Sun
  5. How long does it take the Earth to orbit the Sun?
    It actually takes the Earth just over 365.25 days to orbit the Sun, which is why there is an extra day in a Leap Year, occuring every four years
  6. Which of these is the correct order of the planets (including the dwarf planet)?
    Here's a mnemonic to help you remember - My Very Educated Mother Just Served Us Nine Pizzas
  7. Which is the largest planet in our Solar System?
    The Earth could fit into Jupiter 1,000 times
  8. Measured by diameter, how much bigger is the Sun than the Earth?
    The Sun's diameter is 1,377,648 km while the Earth's is 12,756 km
  9. How many planets are there in the solar system?
    Eight for now! Pluto has been called a 'dwarf planet' since 2006, when scientists debated whether it was large enough to count as a true planet - the debate continues to this day
  10. Life is found on which of these planets?
    No life has been found on any planet apart from Earth - at least, not yet!

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