80 Science Quiz Questions


Here’s a compilation of 80 science quiz questions and answers, both hard and easy. The questions are divided into 4 different rounds of 20 questions each and their correct answers can be found at the end of each round. Have fun!

Science Quiz Questions Round I

  1. What typically makes up between 0.5 per cent and 3 per cent of the dry weight of tobacco?
  2. Which component of the limbic system processes human emotions and memories?
  3. By what name is N-acetyl-S-methoxy tryptamine better known?
  4. Which head of the Lyceum in Athens published Historia Plantarum, the first serious treatise on botany?
  5. If an apricot is dried, its carbohydrate content rises from 13 per cent to (a) 25 per cent (b) 38 per cent or (c) 67 percent?
  6. Whose binomial theorem applied mathematics to gambling games and developed the notion of betting odds?
  7. What is the drawback to superconductors that makes them largely unviable for commercial use?
  8. Carrots are good for your eyesight: true or false (with explanation)?
  9. In which state did a massive volcanic eruption occur in the US at Mount StHelens in 1980, with fifty-seven lives lost, despite a comprehensive evacuation programme?
  10. What are Eagle, Intrepid, Antares, Falcon, Orion and Challenger?
  11. What fraction is denoted decimally as 0.2727 recurring?
  12. Which science deals with the measurement and calibration of the earth and its surface and gravitational field?
  13. What do the initials USB stand for in computer science?
  14. What is the hard, set polymer used in old-fashioned telephones and electrical insulators?
  15. What name is given to the elementary particle believed to have been finally identified at CERN in 2012?
  16. Who discovered oxygen before Joseph Priestley and chlorine before Humphry Davy, but failed to publish and never got the credit?
  17. The modern branch of mathematics called algebra came to the West from which area?
  18. What was the profession of Edwin Hubble in Pasadena in the 19203?
  19. What, after oxygen, is the second most common component of the earth’s crust?
  20. What is the third most common gas in the earth’s atmosphere after Nitrogen and Oxygen?

Round I Answers

  1. Nicotine
  2. Amygdala
  3. Melatonin
  4. Theophrastus
  5. 67% it seems high but it is logical when you consider most fruits and vegetables have high water content and by removing everything else increases
  6. Blaise Pascal
  7. They only operate at extremely cold temperatures – well below even the coldest air temperature
  8. Carrots are a source of retinal, which help the light absorb light energy, carrots won’t make eyesight sharper but it will improve the ocular health
  9. Washington State
  10. The six lunar modules to carry astronauts to the moon’s surface
  11.  3/11 (three-eleventh)
  12. Geodetics
  13. Universal Serial Bus
  14. Bakelite
  15. Higgs Boson
  16.  Sweedish scientist Karl Scheele
  17. The Arabic world, where it was known as al-jabr
  18. Astronomer, he was based at the Mount Wilson Observatory and used the vast Hooker telescope to expand our knowledge of the universe
  19. Silicon
  20. Argon

Science Questions Round II

  1. Roughly what proportion of their DNA do humans and chimpanzees share?
  2. In which field did Austrian monk Gregor Mendel’s study of plants lead to major breakthroughs?
  3. What name is given to a biological process that sets itself naturally to a twenty-four-hour cycle?
  4. What was the occupation of the Greek scientist Galen, whose work was at the forefront of thinking in his field for over 1000 years?
  5. E200+ numbers are preservatives and most E400+ numbers are emulsifiers and stabilizers, but what are E100+ numbers?
  6. What was the primary objective of the alchemists of the middle ages, whose early experiments with metals and minerals were the forerunner of chemistry?
  7.  In the classic atom model, do the electrons orbit the nucleus or does the nucleus encase the agitated electrons?
  8. Which side of the brain would be mostly used to evaluate whether a new wardrobe fits into the space available in a bedroom?
  9. Which scientific theory postulates that subatomic particles are tiny one- dimensional loops?
  10. What was the name of the spaceship from which the final lunar landing took place and in which year was it?
  11. What is the SI unit of thermodynamic temperature?
  12.  What imperial measurement is equal to 0.028 of a cubic metre?
  13. What is the square root of 225?
  14.  Rayleigh scattering accounts for which everyday phenomenon?
  15.  Why would someone suffering from trypanophobia have reason to resent Charles Pravaz for his 1835 contribution to medical science?
  16. Broca’s area in the human brain is responsible for which function?
  17. If circle A is placed within a larger circle B, what is the term for the space between the circumference of A and the circumference of B?
  18. ln Einstein’s famous theory E=mc2, what does the ‘c’ represent?
  19. Before Dolly, the cloned sheep, there were Megan and Morag; in what way was Dolly unique?
  20. In which three scientific disciplines are Nobel Prizes awarded?

Round II Answers

  1.  98 %
  2. Genetics or heredity
  3. Circadian rhythm
  4. A physician (doctor)
  5. Colourants
  6. To find or create the Philosophers Stone
  7. the electrons orbit the nucleus
  8. Right side, which deals most spatial issues
  9. String theory
  10. Apollo 17 in 1972
  11. Kelvin
  12. A cubic foot
  13. Fifteen
  14. The blue appearance of the daytime sky and the reddening at night
  15. He invented the hypodermic syringe
  16. Speech and articulation
  17. Annulus
  18. The speed of light
  19. She was cloned from an adult cell, whereas Megan and Morag were cloned from embryo cells
  20. Physics, chemistry and physiology or medicine

Science Questions Round III

  1. What word is given to the part of a fraction above the line?
  2. It used to be called quicksilver — by what name is this element now known?
  3.  What name is given to a positively charged electron?
  4. What is defined as mass divided by density?
  5. Jonas Salk’s 1952 vaccine helped to reduce the suffering caused by which disease?
  6.  What was first demonstrated in a Surrey quarry by scientist Arthur Nobel in 1867?
  7.  Galactose is one of the three main monosaccharides (simple sugars); what are the other two?
  8. How many faces does a dodecahedron possess? And what 2D shape is each face?
  9.  What anomaly connects bromine and mercury?
  10. In which direction would Foucault’s pendulum turn if it were erected in Sydney, Australia?
  11.  ‘Nitrogen-fixing’ converts nitrogen into which gas (chemical symbol NH3), useful for soil nutrition and food production?
  12.  Crick and Watson discovered that the DNA molecule was what particular shape?
  13. If the ozone layer were to lie upon the surface of the earth, approximately how thick would it be: 3 mm, 3 cm or 3 m?
  14. Where, specifically, did the first moon landing take place?
  15.  What is measured in Pascals?
  16. The British overseas territory Gough Island, part of the Tristan da Cunha group, is a World Heritage wildlife site – in which ocean is it located?
  17.  How many human chromosomes are there?
  18. Under the same temperature and pressure, all gases contain the same number of molecules; whose law? In which century did he postulate this?
  19. In the system defined by Henry Moseley, what does the symbol 2 signify in chemistry and physics?
  20. Who developed, the first commercial process for smelting pig iron to manufacture steel?

Round III Answers

  1. Numerator
  2. Mercury
  3. Positron
  4. Volume
  5. Salk was the man who formulated the polio vaccine
  6. Dynamite
  7. Glucose and fructose
  8. Twelve, pentagonal
  9. They are the only elements to take liquid form at ambient temperature
  10. Anti-clockwise
  11. Ammonia
  12. Double helix ( a bit like a 3D figure of eight)
  13. Only 3 mm, which is why it is so important that is maintained and nurtured
  14. The Sea of Tranquility
  15. Pressure, defined as Newtons per metre squared
  16. South Atlantic
  17. Forty-six (labelled A-G and then X and Y)
  18. Avogadro, nineteen century
  19. The atomic number of an element
  20. (Henry) Bessemer

Science Quiz Questions Round IV

  1. The stirrup, the smallest bone in humans, is found in which part of the body?
  2. An ohm is a unit that measures what?
  3.  Which four planets of the Solar System have rings?
  4. The name of which type of rock derives from the Latin for‘fire’?
  5. Someone with anosmia is lacking what?
  6. Which acid is also known as aqua fortis?
  7. In 2013, Mark Cahill became the first Briton to undergo which pioneering medical operation?
  8. What was the name of thefirst Space Shuttle?
  9. True or false — more than a quarter of the bones in the human body are in the hands?
  10. The thefirst creature to be launched into space was called Laika. What type of animal was Laika?
  11. In which decade was the world’sfirst successful heart transplant carried out?
  12. Rickets is caused by a deficiency of which vitamin?
  13. The mobile-phone operating system Android was developed by which company?
  14. The 19th—century naturalist Charles Darwin was born in which English Midlands town?
  15. In 2013, which country launched ‘Mangalyaan’, a spacecraft that will orbit Mars?
  16. Geothermal power is generated using heat energy from what?
  17. What is the most abundant metal in the ea earth’s crust?
  18. In underwater navigation, what does the acronym ‘Sonar’ stand for?
  19. Halley’s comet is visible from earth every how many years?
  20. How many eyes does a caterpillar have?

Round IV Answers

  1. The ear
  2. Electrical resistance
  3. Jupiter, Saturn, Uranus, Neptune
  4. Igneous
  5. The sense of smell
  6. Nitric Acid
  7. A hand transplant
  8. Columbia
  9. True
  10. A dog
  11. 1960’s
  12. Vitamin D
  13. Google
  14. Shrewsbury
  15. India
  16. Rocks in the Earth’s crust
  17. Aluminium
  18. SOund Navigation And Ranging
  19. 73.3 years
  20. Twelve