Test your knowledge with this medium Science quiz. This quiz includes questions about science players, records, and history. Each session picks 10 random questions from 30 total — try again for a new set!
10 random questions from 30 total • medium
Each session picks different questions!
Below is the full question bank for this quiz. Each session picks 10 questions at random, so you'll see a different set every time you play. Answers and explanations are included for study and review.
What is the chemical formula of methane?
Methane has the formula CH4.
What is the pH value of pure water?
Pure water has a neutral pH of 7.
Which gas is most responsible for global warming?
Carbon dioxide is a major greenhouse gas.
What is the SI unit of force?
Force is measured in Newtons.
Which vitamin is necessary for blood clotting?
Vitamin K helps in blood clotting.
What type of lens is used to correct myopia?
Concave lenses correct myopia (short-sightedness).
What is the atomic number of carbon?
Carbon has atomic number 6.
Which blood group is known as universal donor?
O negative can be donated to all blood types.
What is the main function of the xylem in plants?
Xylem transports water in plants.
Which part of the eye controls the amount of light entering?
The iris controls pupil size and light entry.
What is the unit of electric current?
Electric current is measured in amperes.
What is the chemical symbol for chlorine?
Chlorine has the symbol Cl.
Which organelle controls cell activities?
The nucleus controls cell functions.
What is the process of conversion of liquid to gas called?
Evaporation is liquid to gas.
Which metal is liquid at room temperature?
Mercury is liquid at room temperature.
What is the SI unit of energy?
Energy is measured in joules.
Which planet has the strongest gravity?
Jupiter has the strongest gravity among them.
What is the main function of the root in plants?
Roots absorb water and minerals.
Which particle has a negative charge?
Electrons have a negative charge.
What is the speed of light in vacuum?
Speed of light is 3 × 10^8 m/s.
What is the chemical formula of glucose?
Glucose is C6H12O6.
Which gas is used in photosynthesis?
Plants use carbon dioxide.
What is the function of haemoglobin?
Haemoglobin carries oxygen in blood.
Which layer of Earth is liquid?
Outer core is liquid.
What is the SI unit of pressure?
Pressure is measured in pascals.
Which acid is found in vinegar?
Vinegar contains acetic acid.
What is the function of stomata?
Stomata allow gas exchange.
Which scientist proposed the theory of evolution?
Charles Darwin proposed evolution theory.
What is the chemical symbol for potassium?
Potassium is K.
Which wave can travel in vacuum?
Light waves can travel in vacuum.
The medium science quiz steps beyond basic facts and into more nuanced scientific knowledge. Questions require understanding of scientific principles, not just memorized names — you will need to think about why things work the way they do, not just what they are called.
This tier suits players with a solid foundation in secondary science who want to challenge themselves further. Questions draw from a wider range of scientific disciplines and explore more specific phenomena, definitions, and relationships between concepts.
Science quizzes at this level are excellent for students preparing for exams, adults who want to maintain their science literacy, and anyone who genuinely enjoys understanding the mechanisms behind the natural world.
Each session selects 10 questions randomly, so repeat plays continue to challenge you.
Medium questions require understanding of principles and mechanisms, not just recall of basic facts.
It covers concepts at roughly GCSE level and can be used as a light revision tool.
7 or more out of 10 indicates a strong science foundation at this level.
