General knowledge questions

Science

Space, life, physics and inventions: progress step by step with explanations that make every answer meaningful.

Start the quiz
  • 82 explained questions
  • Explained answers
  • Free, no account

Play on the web

Continue with a complete quiz

10 free questionsScience Quiz: 10 QuestionsPlay now →

Choose your pace

Three ways to make progress

Easy levelBuild your bearings3 selected questions to get started. Intermediate levelConsolidate what you knowA selection of explained questions to go further. Challenge levelKeep playing in the appEvery series, your progress and much more.

Selected quiz

3 questions about Science

Question 1Which astronomer improved the telescope in 1609 before using it to observe the sky?See the answer

The answer

Galileo Galilei

The first known telescopes appeared in the Netherlands in 1608, and Hans Lipperhey applied for a patent for a rudimentary instrument that year. Having learned of their existence, Galileo built his own models in 1609, quickly improved their magnification and aimed them…

Read the full explanation
Question 2What is commonly called a “shooting star” in the night sky?See the answer

The answer

A meteor

A shooting star is the light phenomenon called a meteor. It occurs when a small fragment of rock or metal, called a meteoroid before its entry, passes through the atmosphere at high speed. The air placed in front of the object is…

Read the full explanation
Question 3What is the name of the largest planet in our solar system?See the answer

The answer

Jupiter

Jupiter, the largest planet in our solar system, is a gas giant with more than twice the mass of all the other planets combined. With its impressive cloud bands and the Great Red Spot, a storm larger than Earth, Jupiter offers a…

Read the full explanation

Keep exploring

Questions to explore

The Theory of Evolution

  1. What term refers to the transfer of genes from one population to another, contributing to genetic diversity within species?See the answer
  2. What evolutionary phenomenon describes the emergence of similar characteristics in unrelated species in response to similar environments?See the answer
  3. What theory proposes that major evolutionary changes occur through rapid jumps followed by long periods of stability?See the answer
  4. What is the process called by which two species evolve in response to each other?See the answer
  5. What mechanism of evolution explains the similarity of bone structures between the wings of birds and the arms of humans?See the answer
  6. What is the term used to describe the evolution of different species from a common ancestor?See the answer
  7. Which concept did Darwin not incorporate into his theory of evolution, as it was unknown in his time?See the answer
  8. Which book by Charles Darwin, published in 1859, laid the foundations of modern evolutionary theory?See the answer
  9. Which evolutionary mechanism changes allele frequencies by chance, especially in small populations?See the answer
  10. Which evolutionary mechanism favours traits that increase mating success, such as certain displays or plumage?See the answer

The Great Scientific Discoveries

  1. Which physicist formulated matrix mechanics in 1925, one of the first complete formulations of quantum mechanics?See the answer
  2. Which particle did James Chadwick discover in 1932?See the answer
  3. Which inventor helped make an electric incandescent lighting system commercially practical in the late 19th century?See the answer
  4. Which scientist is known for formulating the laws of genetic heredity?See the answer
  5. Which naturalist published On the Origin of Species in 1859?See the answer
  6. Who is credited with the invention of the compound microscope?See the answer
  7. Who observed in 1928 the antibacterial effect of a mold that led to the discovery of penicillin?See the answer
  8. Who formulated the law of universal gravitation?See the answer
  9. Which astronomer published a 1929 relation between galaxy distances and their recession velocities?See the answer
  10. Which researcher led the team that developed the inactivated polio vaccine declared effective in 1955?See the answer

Mathematical Theorems

  1. In which area of mathematics does Cantor’s Theorem establish that there are different levels of infinity?See the answer
  2. Towards what constant does the ratio of two consecutive terms of the Fibonacci sequence tend?See the answer
  3. What is the name of the number used to measure the circumference of a circle?See the answer
  4. Which mathematician is associated with the constant e, approximately equal to 2.718?See the answer
  5. What geometric shape is defined by the set of points that are equidistant from a central point in a plane?See the answer
  6. What is the name of the sequence in which each number is the sum of the two preceding ones?See the answer
  7. In what geometry is the sum of the interior angles of a triangle equal to 180 degrees?See the answer
  8. What formula is used to calculate the area of a circle?See the answer
  9. To which Greek mathematician is traditionally attributed the theorem (a² + b² = c²) for a right triangle?See the answer

The Pioneers of Science

  1. Who discovered the laws of planetary motion, demonstrating that planets follow elliptical orbits around the Sun?See the answer
  2. Who demonstrated in the 17th century the general circulation of blood under the action of the heart?See the answer
  3. Who is considered the father of modern psychology?See the answer
  4. Who designed the first electric battery, paving the way for the era of electricity?See the answer
  5. Which chemist is famous for creating the periodic table of elements?See the answer
  6. Which scientist invented the first vaccine against rabies?See the answer
  7. Which ancient Greek doctor is traditionally nicknamed “the father of medicine”?See the answer
  8. Which scientist is credited with developing the first vaccine against smallpox?See the answer

Technological Inventions

  1. What is the distributed database that supports cryptocurrency technology by ensuring the transparency and security of transactions?See the answer
  2. What file format, developed by Adobe Systems, allows the creation of digital documents presenting text and images in a fixed layout?See the answer
  3. What technology allows computers to simulate interactive three-dimensional environments?See the answer
  4. What is the innovation behind the ability of some devices to identify individuals by their unique biological characteristics?See the answer
  5. What data storage technology uses light to read and write information?See the answer
  6. What cryptography method secures communications on the Internet by using two different keys for encryption and decryption?See the answer
  7. What is the name of the first microprocessor commercialized by Intel in 1971?See the answer
  8. Which language released by IBM in the 1950s was one of the first widely used high-level languages?See the answer

The Infinite Wonders of the Cosmos

  1. Why is Mars nicknamed the “Red Planet”?See the answer
  2. Which cosmic phenomenon is theorized to occur when the Universe stops its expansion and begins to contract?See the answer
  3. What differentiates a supermassive black hole from a stellar black hole?See the answer
  4. What is called “the Doppler effect” in astronomy?See the answer
  5. What is the main difference between a comet and an asteroid?See the answer
  6. What name is given to the band of constellations located along the ecliptic?See the answer
  7. What is the Milky Way?See the answer

The Principles of Engineering and Technology

  1. In which technology are data stored in the form of light, promising much higher speeds and storage capacity than traditional media?See the answer
  2. Which technology is crucial for long-distance communication on the Internet?See the answer
  3. Which satellite-based positioning system is used to determine the precise location of aircraft and ships?See the answer
  4. What is the main purpose of biomedical engineering?See the answer
  5. What process is primarily used to desalinate seawater?See the answer
  6. What material is essential in the manufacture of integrated circuits and microprocessors?See the answer
  7. What energy source do photovoltaic panels use to generate electricity?See the answer

Advances in Modern Medicine

  1. What is the name of the technique that allows visualization of brain activity by measuring changes in blood flow related to neural activity?See the answer
  2. In which field of medicine have 3D printers revolutionized the manufacturing of customized prostheses and implants?See the answer
  3. Which treatment method uses modified living organisms to fight diseases like cancer?See the answer
  4. What therapeutic approach aims to modify the genetic material of cells to treat a disease?See the answer
  5. Which innovative treatment uses the immune system to fight cancer, marking a turning point in the battle against this disease?See the answer
  6. Which genetic modification technique, developed in the 21st century, allows for gene editing with unprecedented precision?See the answer
  7. Which non-invasive diagnostic tool uses magnetic fields and radio waves to create images of the inside of the body?See the answer

The Foundations of Modern Science

  1. Which property of water allows insects, such as water striders, to walk on its surface without sinking?See the answer
  2. What physical principle is involved in the righting reflex that allows a cat to reorient its falling body?See the answer
  3. What is “cavitation,” a phenomenon often observed in rapidly moving fluids?See the answer
  4. Which advancement in theoretical physics posits the existence of additional dimensions beyond the three spatial dimensions?See the answer
  5. Which scientist is famous for introducing the idea that matter can be converted into energy, summarized by the equation E=mc²?See the answer
  6. What quantum principle limits the simultaneous precision of the position and momentum of a particle?See the answer
  7. What principle relates the speed of a fluid and its pressure and helps describe the flow around a wing?See the answer

Chemistry in Everyday Life

  1. Which gas, contributing to the greenhouse effect, is primarily produced by the combustion of fossil fuels?See the answer
  2. Which heat treatment is used to preserve food by preventing the growth of microorganisms?See the answer
  3. In which daily chemical process do acids react with bases, often producing water and a salt as products?See the answer
  4. Which chemical element acts as the final electron acceptor in aerobic cellular respiration?See the answer
  5. What ion is sometimes added to drinking water to help prevent tooth decay?See the answer
  6. Which chemical reaction is responsible for rust on iron and steel?See the answer
QultureFree quiz on mobileApp Store