Science Trivia Quiz

Think you know Science? Here are 50 Science trivia questions with answers — then play them live against real players in the free Triviarena quiz app.

1. What happens to the thin sulfur dioxide atmosphere of Io when it enters Jupiter's shadow?
   • It ignites into plasma
   • It freezes onto the surface
   • It escapes into space
   • It turns into liquid rain
   Answer: It freezes onto the surface
   Because the atmosphere is tied to surface temperature, it collapses and freezes as frost onto the surface during an eclipse.
2. To date, which is the only spacecraft to have ever flown by and visited the planet Uranus?
   • Cassini
   • Voyager 2
   • New Horizons
   • Galileo
   Answer: Voyager 2
   Voyager 2 is the only space probe to have visited Uranus, making its closest approach in 1986.
3. Which scientific law states that pressure in a confined fluid is transmitted equally throughout?
   • Pascal's law
   • Boyle's law
   • Newton's third law
   • Hooke's law
   Answer: Pascal's law
   Pascal's law dictates that a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.
4. Which of these are two simple shapes of virus particles?
   • Spherical and cubic
   • Linear and circular
   • Helical and icosahedral
   • Oval and triangular
   Answer: Helical and icosahedral
   The content identifies helical and icosahedral forms as simple shapes for virus particles, in contrast to more complex structures.
5. Which NASA spacecraft performed the historic first flyby of Pluto in 2015?
   • New Horizons
   • Voyager 1
   • Cassini
   • Pioneer 10
   Answer: New Horizons
   NASA's New Horizons spacecraft was launched in 2006 and made its closest approach to Pluto on July 14, 2015, providing the first close-up images of the dwarf planet.
6. According to radiometric dating, approximately how old is the planet Earth?
   • 4.5 million years
   • 4.5 billion years
   • 13.8 billion years
   • 65 million years
   Answer: 4.5 billion years
   Scientific evidence indicates that Earth and the rest of the Solar System formed roughly 4.5 billion years ago.
7. What scientific concept, expressed in Newton's first law, was pioneered by Galileo?
   • Entropy
   • Relativity
   • Superposition
   • Inertia
   Answer: Inertia
   The modern concept of inertia, which states that a moving body keeps moving until interfered with, is credited to Galileo.
8. What happens to a free electron and a positive ion during the process of recombination?
   • They combine and emit a photon
   • They split into smaller quarks
   • They generate a magnetic field
   • They repel each other strongly
   Answer: They combine and emit a photon
   Recombination is the reverse of ionization, where a positive ion captures a free electron, spontaneously emitting a photon.
9. Due to their unique reproduction, the ancestral family tree of which male insect follows Fibonacci?
   • Monarch butterfly
   • Honeybee
   • Praying mantis
   • Fruit fly
   Answer: Honeybee
   Male honeybees (drones) hatch from unfertilized eggs, meaning they have only one parent (a mother), while females have two. Tracing their ancestors back yields the Fibonacci sequence.
10. For what purpose has hydropower been used since ancient times?
    • Generating electricity
    • Propelling vehicles
    • Heating homes
    • Milling flour
    Answer: Milling flour
11. What is the official chemical symbol for the element potassium?
    • K
    • P
    • Po
    • Pt
    Answer: K
    The symbol for potassium is K, which comes from the Neo-Latin word 'kalium'.
12. What concept suggests a highly improbable evolutionary step prevents civilizations from advancing?
    • The Great Filter
    • The Drake Equation
    • The Zoo Hypothesis
    • The Mediocrity Principle
    Answer: The Great Filter
    The Great Filter represents an extremely unlikely evolutionary step, such as abiogenesis, that stops life from becoming a space-faring civilization.
13. Which physicist's 1919 solar eclipse expedition proved Einstein's theory?
    • Karl Schwarzschild
    • Edwin Hubble
    • Georges Lemaître
    • Arthur Eddington
    Answer: Arthur Eddington
    Arthur Eddington led a 1919 expedition that observed starlight deflecting around the Sun during an eclipse, confirming Einstein's predictions.
14. What is a glacier called when it temporarily advances up to 100 times faster than normal?
    • Calving glacier
    • Runaway glacier
    • Temperate glacier
    • Surging glacier
    Answer: Calving glacier
    A surging glacier experiences periods of extreme advancement, typically moving 100 times faster than its normal rate due to basal melting.
15. What does the Latin term "placebo" translate to in English?
    • I shall be pleasing
    • I shall harm
    • I shall heal
    • I shall deceive
    Answer: I shall be pleasing
    The word placebo comes from Latin, meaning "I shall be pleasing," reflecting its original use as a treatment to comfort patients.
16. What was the first chemical element to be artificially synthesized?
    • Technetium
    • Plutonium
    • Promethium
    • Oganesson
    Answer: Technetium
    Technetium (element 43) was created in 1937, making it the first element synthesized artificially rather than found in nature.
17. Which thought experiment involves a space traveler aging less than their sibling?
    • Twin paradox
    • Grandfather paradox
    • Fermi paradox
    • Schrödinger's cat
    Answer: Twin paradox
    The twin paradox explores time dilation, where a twin traveling near light speed ages slower than their twin who remains on Earth.
18. Following the release of the novel and film Jurassic Park, which subject gained significant public attention?
    • Ancient plant life
    • Marine mammals
    • Dinosaurs
    • Early human ancestors
    Answer: Dinosaurs
19. What was the first living organism to have its entire genome fully sequenced in 1995?
    • Haemophilus influenzae
    • Escherichia coli
    • Saccharomyces cerevisiae
    • Bacillus subtilis
    Answer: Haemophilus influenzae
    In 1995, the bacterium Haemophilus influenzae became the first organism to have its entire genome sequenced.
20. What jelly-like substance is most commonly used as a growth medium in Petri dishes?
    • Pectin
    • Gelatin
    • Agar
    • Cellulose
    Answer: Agar
    Agar, or agarose gel, is the most common culture medium used in Petri dishes to provide a solid surface for microorganisms.
21. The Wöhler synthesis is now accepted as disproving which doctrine?
    • Vitalism
    • Phlogiston theory
    • Spontaneous generation
    • Atomic theory
    Answer: Vitalism
    The synthesis of urea from inorganic materials is now generally accepted as disproving the doctrine of vitalism.
22. To float successfully, a 10,000-ton ship must displace at least what weight of water?
    • 10,000 tons
    • 20,000 tons
    • 5,000 tons
    • 100 tons
    Answer: 10,000 tons
    According to the principle of flotation, a floating object must displace a weight of fluid equal to its own weight.
23. Launched in 2018, which NASA probe was the first ever named in honor of a living person?
    • Hubble Space Telescope
    • Cassini-Huygens
    • James Webb Telescope
    • Parker Solar Probe
    Answer: Parker Solar Probe
    The Parker Solar Probe was named after Eugene Parker, the astrophysicist who first theorized the existence of the solar wind.
24. What term describes freezing humans for future revival, often confused with cryogenics?
    • Cryonics
    • Cryosurgery
    • Cryoablation
    • Cryoelectronics
    Answer: Cryonics
    Cryonics is the practice of preserving bodies for potential future revival, though popular culture often mistakenly calls it cryogenics.
25. An adult human has how many teeth?
    • 28
    • 20
    • 36
    • 32
    Answer: 32
26. Which NASA space probes carry the Golden Record, a message to aliens co-designed by Carl Sagan?
    • Voyager probes
    • Apollo missions
    • Curiosity rovers
    • Cassini orbiters
    Answer: Voyager probes
    Sagan helped assemble the Voyager Golden Record, a collection of Earth's sights and sounds sent into space on the Voyager probes in 1977.
27. What happens when there is a static charge?
    • Electrons flow
    • Electrons gather in one place
    • Protons migrate
    • Neutrons decay
    Answer: Electrons gather in one place
28. In quantum field theory, what systematic procedure is used to eliminate infinities?
    • Renormalization
    • Quantization
    • Superposition
    • Symmetry breaking
    Answer: Renormalization
    Renormalization is a systematic computational procedure developed to remove infinite quantities in quantum field theory calculations.
29. In human physiology, capillary action is essential for the continuous drainage of what?
    • Tear fluid from the eyes
    • Blood from the heart
    • Saliva from the mouth
    • Spinal fluid from the brain
    Answer: Tear fluid from the eyes
    Capillary action drains tear fluid from the eye through tiny canaliculi, or lacrimal ducts, located in the inner corner of the eyelid.
30. What did Galileo observe about Venus that helped disprove the geocentric model?
    • It has a large moon
    • It exhibits a full set of phases
    • It has visible rings
    • It emits its own light
    Answer: It exhibits a full set of phases
    Galileo observed that Venus goes through a full set of phases like the Moon, which was impossible in the Ptolemaic geocentric model.
31. Which three moons of Jupiter are in a stable 1:2:4 orbital resonance?
    • Ganymede, Europa, and Io
    • Titan, Rhea, and Dione
    • Phobos, Deimos, and Triton
    • Callisto, Amalthea, and Elara
    Answer: Ganymede, Europa, and Io
32. In permanganometry, what compound acts as its own indicator by leaving a pink color?
    • Potassium permanganate
    • Potassium dichromate
    • Silver nitrate
    • Sodium bicarbonate
    Answer: Potassium permanganate
    Potassium permanganate has an intense color, so a slight persisting pink color naturally signals the endpoint without needing an extra indicator.
33. What naturally magnetized mineral led to the ancient discovery of magnetism?
    • Magnetite
    • Hematite
    • Pyrite
    • Quartz
    Answer: Magnetite
    The text states that magnetism was first discovered when people noticed that lodestones, which are naturally magnetized pieces of the mineral magnetite, could attract iron.
34. Discovered in 1895, which electromagnetic radiation is widely used for medical bone imaging?
    • X-rays
    • Gamma rays
    • Radio waves
    • Ultraviolet rays
    Answer: X-rays
    X-rays can pass through soft human tissue but are stopped by denser materials like bone, making them ideal for medical radiography.
35. What infectious bacterial disease is commonly known as "rabbit fever"?
    • Tularemia
    • Malaria
    • Yellow fever
    • Typhoid
    Answer: Tularemia
    Tularemia is an extremely infectious disease that is also commonly referred to as rabbit fever or deer fly fever.
36. Thomas Edison's first working phonograph from 1877 recorded sound onto a cylinder wrapped in what?
    • Tinfoil
    • Beeswax
    • Celluloid
    • Parchment
    Answer: Tinfoil
    The earliest version of Edison's phonograph recorded sound indentations onto a sheet of tinfoil wrapped around a grooved metal cylinder.
37. The panspermia hypothesis suggests that life on Earth originally came from where?
    • Deep ocean vents
    • Outer space
    • Volcanic eruptions
    • Artificial laboratories
    Answer: Outer space
    Panspermia is the theory that life evolved elsewhere in the universe and was brought to Earth via cosmic debris.
38. Roughly how long does it take light to travel a distance of one foot in a vacuum?
    • One microsecond
    • One millisecond
    • One nanosecond
    • One picosecond
    Answer: One nanosecond
    Light travels approximately one foot in a nanosecond, leading to the informal term "light-foot."
39. What optical component does a refracting telescope use to gather and focus light?
    • A curved mirror
    • A glass prism
    • A transparent lens
    • A laser emitter
    Answer: A transparent lens
    Refracting telescopes use a lens as their objective to bend and focus light, unlike reflecting telescopes which use mirrors.
40. About how long does it take a photon to travel from the Sun's core to its surface?
    • Up to 170,000 years
    • 8 minutes and 20 seconds
    • 2.3 seconds
    • 5 to 10 days
    Answer: Up to 170,000 years
    Photons bounce around so much in the dense plasma of the Sun's radiative zone that it can take over 100,000 years for them to finally escape.
41. What modern gene-editing tool revolutionized gene therapy by allowing precise DNA correction?
    • CRISPR
    • PCR
    • ELISA
    • Gel electrophoresis
    Answer: CRISPR
    CRISPR allows scientists to make highly precise changes to the genome at exact locations, rather than just blindly replacing entire genes.
42. The word "microscope" comes from Ancient Greek words meaning "small" and what else?
    • To look
    • To measure
    • To capture
    • To illuminate
    Answer: To look
    The word derives from the Ancient Greek 'mikrós' meaning 'small' and 'skopéō' meaning 'to look at' or 'examine'.
43. Explosive 'Plinian' eruptions are named after a Roman scholar who died investigating which volcano?
    • Mount Vesuvius
    • Mount Etna
    • Stromboli
    • Mount Olympus
    Answer: Mount Vesuvius
    Pliny the Elder died investigating the 79 CE eruption of Vesuvius, and his nephew's descriptions led to the term 'Plinian'.
44. What does an atomic nucleus mainly consist of?
    • Protons and electrons
    • Neutrons and electrons
    • Only from electrons
    • Protons and neutrons
    Answer: Protons and neutrons
45. According to Ohm's law, voltage is the product of the current and which other electrical property?
    • Resistance
    • Capacitance
    • Inductance
    • Temperature
    Answer: Resistance
    Ohm's law states that the voltage across a resistor equals the current flowing through it multiplied by its resistance.
46. Who introduced the term 'potential energy' in 1853?
    • William Rankine
    • William Thomson
    • Peter Tait
    • James Watt
    Answer: William Rankine
    The text explicitly states that William Rankine introduced the term 'potential energy' in 1853.
47. In which regular polygon do the intersecting diagonals section each other in the golden ratio?
    • Regular hexagon
    • Perfect square
    • Regular pentagon
    • Regular octagon
    Answer: Regular pentagon
    In a regular pentagon, the diagonals cross each other such that the segments are perfectly proportioned to the golden ratio.
48. What does cryptography deal with?
    • bacteria
    • Codes and encryption
    • Crystals
    • Plant
    Answer: Codes and encryption
49. Which low-cost metal is primarily used as a catalyst in the modern Haber-Bosch process?
    • Iron
    • Copper
    • Zinc
    • Aluminum
    Answer: Iron
    An iron-based catalyst is used to speed up the reaction because it is highly effective and much cheaper than alternatives like osmium.
50. What everyday item uses the piezoelectric effect to generate a spark?
    • Cigarette lighter
    • Flashlight
    • Battery charger
    • Microwave oven
    Answer: Cigarette lighter
    Pressing the button on a piezoelectric lighter hits a crystal, producing a high-voltage spark that ignites the gas.