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Science quiz

Planets, the human body, chemistry, inventions and great scientists: an accessible science quiz with questions for the curious and the experts alike.

Play the science quiz (65 questions)

Sample questions

Here are a few questions from this topic, sorted by level. Click to see the answer… or better still, start a game and play against the clock.

Easy

  1. What is the chemical formula for water?

    H2O

  2. Which planet is closest to the Sun?

    Mercury

  3. How many legs does a spider have?

    8

  4. Which planet is nicknamed the Red Planet?

    Mars : Its colour comes from the iron oxide on its surface.

Medium

  1. How many bones are there in an adult human skeleton?

    206

  2. What is the chemical symbol for gold?

    Au : From the Latin aurum.

  3. What is the largest planet in the Solar System?

    Jupiter

  4. Who formulated the theory of relativity?

    Albert Einstein

Hard

  1. What is the most abundant chemical element in the Universe?

    Hydrogen

  2. Who discovered penicillin in 1928?

    Alexander Fleming

  3. What is the chemical symbol for potassium?

    K : From the Latin kalium.

  4. How many chromosomes does a human cell have (excluding sex cells)?

    46 : 23 pairs.

Expert

  1. What is the atomic number of carbon?

    6

  2. Which physicist formulated the uncertainty principle?

    Werner Heisenberg

  3. Which chemical element has the symbol W?

    Tungsten

  4. Roughly how many minutes does sunlight take to reach the Earth?

    8 : About 8 minutes and 20 seconds.

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