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500+ Science Trivia Questions & Answers

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I've sorted all 500+ multiple choice questions into five levels, from super easy to really hard, so you can start simple and work your way up. Get ready to learn cool facts, quiz your friends, and discover more about Science trivia - all while having a great time!

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Very Easy Science Trivia Questions

These Science trivia questions are perfect for beginners, young kids, and toddlers. If you want to play Science trivia with children, try these very easy difficulty questions to get started.

1.) What is the boiling point of water in degrees Celsius?

  • 0
  • 100
  • 32
  • 50

2.) What is the chemical symbol for water?

  • CO2
  • H2O
  • HCl
  • O2

3.) Which gas do plants absorb from the atmosphere for photosynthesis?

  • Carbon dioxide
  • Helium
  • Nitrogen
  • Oxygen

4.) What force pulls objects toward Earth?

  • Electricity
  • Friction
  • Gravity
  • Magnetism

5.) How many legs does an insect have?

  • Eight
  • Four
  • Six
  • Ten

6.) What part of the plant conducts photosynthesis?

  • Flower
  • Leaf
  • Root
  • Stem

7.) What is the largest planet in our solar system?

  • Earth
  • Jupiter
  • Mars
  • Saturn

8.) Which organ is responsible for pumping blood through the body?

  • Brain
  • Heart
  • Kidney
  • Lungs

9.) What type of celestial body is the Sun?

  • Asteroid
  • Moon
  • Planet
  • Star

10.) What is the center of an atom called?

  • Electron
  • Neutron
  • Nucleus
  • Proton

11.) Lightning is a discharge of what kind of energy?

  • Chemical
  • Electrical
  • Nuclear
  • Thermal

12.) Which planet is closest to the Sun?

  • Earth
  • Mars
  • Mercury
  • Venus

13.) What element does the chemical symbol "O" represent?

  • Carbon
  • Hydrogen
  • Nitrogen
  • Oxygen

14.) In which state of matter are atoms most closely packed?

  • Gas
  • Liquid
  • Plasma
  • Solid

15.) What is the main gas exhaled by humans?

  • Carbon dioxide
  • Hydrogen
  • Nitrogen
  • Oxygen

16.) In science, what diatomic molecule is represented by the formula H2?

  • Carbon dioxide
  • Helium
  • Hydrogen
  • Water

17.) What is H2O commonly known as?

  • Helium
  • Hydrogen
  • Oxygen
  • Water

18.) What planet is known as the "Blue Planet"?

  • Earth
  • Neptune
  • Uranus
  • Venus

19.) How many planets are in the solar system?

  • Eight
  • Nine
  • Seven
  • Ten

20.) What kind of celestial body is the Sun?

  • Asteroid
  • Comet
  • Planet
  • Star

21.) What is the powerhouse of the cell called?

  • Cell wall
  • Mitochondria
  • Nucleus
  • Ribosome

22.) What organ pumps blood through the human body?

  • Brain
  • Heart
  • Liver
  • Lungs

23.) What force keeps us on the ground and prevents us from floating into space?

  • Friction
  • Gravity
  • Magnetism
  • Tension

24.) What is the chemical symbol for water?

  • CO2
  • H2O
  • NaCl
  • O2

25.) What do bees produce that is used as a sweetener?

  • Honey
  • Nectar
  • Pollen
  • Wax

Easy Science Trivia Questions

These Science trivia questions are perfect for kids in elementary school. If you want to play Science trivia with schoolchildren, try these easy difficulty questions to get started.

26.) What is the hardest natural substance on Earth?

  • Copper
  • Diamond
  • Gold
  • Iron

27.) What is the primary gas found in the Earth's atmosphere?

  • Carbon dioxide
  • Hydrogen
  • Nitrogen
  • Oxygen

28.) What mineral is the primary component of chalk?

  • Calcium carbonate
  • Iron oxide
  • Silicon dioxide
  • Sodium chloride

29.) What part of the human body is primarily composed of calcium?

  • Bones
  • Hair
  • Muscles
  • Skin

30.) What is the chemical formula for table salt?

  • C6H12O6
  • H2O
  • KCl
  • NaCl

31.) Into what form of energy do plants convert sunlight?

  • Chemical energy
  • Mechanical energy
  • Nuclear energy
  • Thermal energy

32.) What is the name of the first man-made satellite to orbit Earth?

  • Apollo 11
  • Hubble
  • Sputnik
  • Voyager

33.) What type of blood cells are responsible for carrying oxygen?

  • Plasma cells
  • Platelets
  • Red blood cells
  • White blood cells

34.) What part of the cell contains the genetic material?

  • Cell membrane
  • Cytoplasm
  • Nucleus
  • Ribosome

35.) What is the chemical symbol for the element oxygen?

  • O
  • Og
  • On
  • Ox

36.) What force keeps objects anchored to the surface of the Earth?

  • Friction
  • Gravity
  • Inertia
  • Magnetism

37.) What is the primary gas found in the Earth's atmosphere?

  • Carbon Dioxide
  • Hydrogen
  • Nitrogen
  • Oxygen

38.) What is the largest organ in the human body?

  • Heart
  • Liver
  • Lungs
  • Skin

39.) In what state of matter are atoms most tightly packed?

  • Gas
  • Liquid
  • Plasma
  • Solid

40.) What process do plants use to convert sunlight into energy?

  • Digestion
  • Germination
  • Photosynthesis
  • Respiration

41.) What is the center of an atom called?

  • Electron
  • Neutron
  • Nucleus
  • Proton

42.) What part of the cell contains genetic material?

  • Cell Membrane
  • Mitochondria
  • Nucleus
  • Ribosome

43.) What do bees collect from flowers to make honey?

  • Fruit
  • Nectar
  • Pollen
  • Sap

44.) What type of animal is a dolphin?

  • Bird
  • Fish
  • Mammal
  • Reptile

45.) What do you call the molten rock beneath the Earth's surface?

  • Gravel
  • Lava
  • Magma
  • Sediment

46.) Which gas is most commonly associated with the greenhouse effect?

  • Carbon Dioxide
  • Hydrogen
  • Nitrogen
  • Oxygen

47.) What is the basic unit of electric current in the International System of Units (SI)?

  • Ampere
  • Ohm
  • Volt
  • Watt

48.) What part of a plant is responsible for photosynthesis?

  • Flowers
  • Leaves
  • Roots
  • Stems

49.) Which of the following is a renewable energy source?

  • Coal
  • Natural Gas
  • Nuclear
  • Solar

50.) What structure in the human body connects muscles to bones?

  • Cartilage
  • Ligament
  • Nerve
  • Tendon

Medium Science Trivia Questions

These Science trivia questions are perfect for older kids, teenagers, and adults. If you want to play Science trivia with friends and family, try these medium difficulty questions

51.) What is the smallest unit of life that can carry out all functions necessary for life?

  • Atom
  • Cell
  • Molecule
  • Organ

52.) What type of chemical bond involves the sharing of electron pairs between atoms?

  • Covalent bond
  • Hydrogen bond
  • Ionic bond
  • Metallic bond

53.) What is the primary function of the large intestine in the human body?

  • Absorb water
  • Break down fats
  • Digest proteins
  • Produce insulin

54.) Which planet has a day that is longer than its year?

  • Jupiter
  • Mars
  • Mercury
  • Venus

55.) What is the most abundant element in the Earth's crust?

  • Aluminum
  • Iron
  • Oxygen
  • Silicon

56.) In physics, what term describes the rate of change of velocity of an object?

  • Acceleration
  • Inertia
  • Momentum
  • Speed

57.) What is the pH value of pure water at room temperature?

  • 0
  • 14
  • 5
  • 7

58.) What type of organism is yeast?

  • Alga
  • Bacterium
  • Fungus
  • Virus

59.) Which scientist is known for the laws of motion and universal gravitation?

  • Albert Einstein
  • Galileo Galilei
  • Isaac Newton
  • Nikola Tesla

60.) What is the process by which cells divide to produce two identical daughter cells?

  • Binary fission
  • Budding
  • Meiosis
  • Mitosis

61.) Which vitamin is essential for calcium absorption in bones?

  • Vitamin A
  • Vitamin C
  • Vitamin D
  • Vitamin E

62.) Which organelle in the cell is responsible for producing energy in the form of ATP?

  • Chloroplast
  • Mitochondria
  • Nucleus
  • Ribosome

63.) What is the name of the process by which plants lose water vapor through their leaves?

  • Condensation
  • Evaporation
  • Respiration
  • Transpiration

64.) Which subatomic particle was discovered by J.J. Thomson in 1897?

  • Electron
  • Neutron
  • Photon
  • Proton

65.) What is the term for a substance that speeds up a chemical reaction without being consumed?

  • Catalyst
  • Inhibitor
  • Reactant
  • Solvent

66.) What is the common term for the infectious agent 'variola virus'?

  • Chickenpox
  • Influenza
  • Measles
  • Smallpox

67.) Which type of electromagnetic radiation has the shortest wavelength?

  • Gamma rays
  • Infrared
  • Ultraviolet
  • X-rays

68.) Which physicist is known for the formulation of the uncertainty principle in quantum mechanics?

  • Albert Einstein
  • Niels Bohr
  • Paul Dirac
  • Werner Heisenberg

69.) What branch of physics deals specifically with the quantum behavior of photons and their interactions with matter?

  • Astrophysics
  • Classical mechanics
  • Quantum optics
  • Quantum thermodynamics

70.) In chemistry, what term refers to solvents that can dissolve ionic compounds by breaking the ionic bonds?

  • Amphipathic solvents
  • Nonpolar solvents
  • Organic solvents
  • Polar solvents

71.) What branch of biology is concerned with the study of fungi, including their genetic and biochemical properties?

  • Botany
  • Endocrinology
  • Entomology
  • Mycology

72.) What enzyme is responsible for catalyzing the conversion of hydrogen peroxide to water and oxygen?

  • Amylase
  • Catalase
  • Lactase
  • Lipase

73.) What principle in thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another?

  • First Law of Thermodynamics
  • Second Law of Thermodynamics
  • Third Law of Thermodynamics
  • Zeroth Law of Thermodynamics

74.) What type of reaction involves the breaking of a phosphoanhydride bond and releases energy in biochemistry?

  • ATP hydrolysis
  • Condensation
  • Dehydration synthesis
  • Oxidation

75.) In the field of medicine, what is the term for the study of the distribution and determinants of health-related states in populations?

  • Cytology
  • Epidemiology
  • Immunology
  • Pathology

Hard Science Trivia Questions

These Science trivia questions are perfect for teenagers and adults. If you want to play Science trivia with family and friends, try these hard difficulty questions for a fun challenge.

76.) In astronomy, what phenomenon occurs when a neutron star reaches a certain critical rotation speed, causing it to emit significant radiation?

  • Black hole
  • Pulsar
  • Quasar
  • Supernova

77.) What is the name of the mathematical method used for finding the shapes that minimize surface area given a boundary?

  • Calculus of variations
  • Differential calculus
  • Integral equations
  • Linear algebra

78.) In physics, which model describes situations where quarks are dominant at very high temperatures and densities?

  • Bose-Einstein condensate
  • Magnetohydrodynamics
  • Quark-gluon plasma
  • Superfluid helium

79.) In genetics, what term is used to describe a single nucleotide polymorphism occurring within a non-coding sequence of a gene?

  • Exonic SNP
  • Intronic SNP
  • Promoter mutation
  • Stop codon

80.) Which physicist proposed the uncertainty principle as a fundamental limit to the precision of certain measurements?

  • Erwin Schrödinger
  • Max Born
  • Richard Feynman
  • Werner Heisenberg

81.) Which theory in cosmology suggests that during the exponential expansion of the universe, quantum fluctuations became large-scale structures?

  • Inflationary theory
  • M-theory
  • Plasma cosmology
  • Steady State theory

82.) What branch of mathematics is concerned with the study of wave functions, specifically in quantum mechanics?

  • Functional analysis
  • Statistics
  • Topology
  • Vector calculus

83.) What is the main purpose of the Helmholtz Equation in physics?

  • Calculating projectile motion
  • Describing wave propagation
  • Determining thermal equilibrium
  • Predicting chemical reactions

84.) What kind of structural particle did Murray Gell-Mann propose to explain the properties of hadrons?

  • Bosons
  • Leptons
  • Quarks
  • Tachyons

85.) What is the name of the low-mass subatomic particle, with zero electric charge, discovered through nuclear reactions?

  • Electron
  • Neutrino
  • Photon
  • Positron

86.) Which branch of physics is primarily concerned with the properties of superconducting materials?

  • Acoustics
  • Condensed matter physics
  • Optics
  • Thermodynamics

87.) Which principle in thermodynamics states that the total entropy of an isolated system can never decrease over time?

  • First law of thermodynamics
  • Second law of thermodynamics
  • Third law of thermodynamics
  • Zeroth law of thermodynamics

88.) What is the name of the theory that proposes that all matter is composed of discrete units like particles or atoms, governed by quantum mechanics?

  • Classical mechanics
  • Field theory
  • Quantum theory
  • String theory

89.) In quantum mechanics, what is the name of the principle that suggests that certain pairs of physical properties cannot be simultaneously measured with arbitrary precision?

  • Certainty Principle
  • Complementarity Principle
  • Heisenberg Uncertainty Principle
  • Pauli Exclusion Principle

90.) Which complex biological structure in plants is responsible for the majority of photosynthesis and consists of thylakoid membranes?

  • Chloroplast
  • Mitochondria
  • Nucleus
  • Vacuole

91.) What phenomenon occurs when the expression of one gene is affected by the presence of another gene at a different locus?

  • Codominance
  • Epistasis
  • Incomplete dominance
  • Pleiotropy

92.) What term in physics refers to the hypothetical substance that permeates all of space and can carry electromagnetic waves?

  • Dark matter
  • Higgs field
  • Luminiferous aether
  • Neutrino soup

93.) In molecular biology, what is the name of the highly conserved protein complex that initiates the breakdown of proteins tagged with ubiquitin?

  • Ligase
  • Polymerase
  • Proteasome
  • Ribosome

94.) In abstract algebra, what is the name of the algebraic structure consisting of a set equipped with a single binary operation that satisfies closure, associativity, and has an identity element?

  • Field
  • Monoid
  • Ring
  • Semigroup

95.) Which term is used for the rapid change in the membrane potential that occurs when ion channels in a neuron open in response to a change in voltage, leading to an action potential?

  • Depolarization
  • Hyperpolarization
  • Repolarization
  • Threshold potential

96.) What is the term for the network of filamentous structures in eukaryotic cells, composed of proteins like actin, which provides structural support and facilitates cell movement?

  • Cytoskeleton
  • Endoplasmic reticulum
  • Golgi apparatus
  • Nucleolus

97.) What principle in quantum physics suggests that events can happen without a definite cause?

  • Material causality
  • Quantum indeterminacy
  • Spontaneous generation
  • Temporal paradox

98.) In microbiology, what is the name of the enzyme that synthesizes a complementary RNA strand from a DNA template?

  • DNA polymerase
  • Ligase
  • RNA polymerase
  • Reverse transcriptase

99.) Which constant, significant in atomic physics, is the physical constant obtained by dividing Planck's constant by 2π?

  • Boltzmann constant
  • Faraday's constant
  • Reduced Planck's constant (ħ)
  • Rydberg constant

100.) In ecology, what is the term for a form of interspecies interaction in which an organism releases chemicals that affect the growth of surrounding plants?

  • Allelopathy
  • Amensalism
  • Competition
  • Parasitism

Very Hard Science Trivia Questions

These Science trivia questions are perfect for adults, college students, and advanced students. If you want to play Science trivia with friends, family, or colleagues, try these very hard questions to test your knowledge about Science at its limits.

101.) What is the astrophysical process called when a white dwarf star gains enough mass to overcome electron degeneracy pressure and collapses, leading to a supernova explosion?

  • Nova outbreak
  • Planetary nebula formation
  • Type II supernova
  • Type Ia supernova

102.) Which concept in evolutionary biology, proposed by Sewall Wright, explains the influence of interconnected populations on genetic drift and selection?

  • Founder effect
  • Hardy-Weinberg principle
  • Kin selection theory
  • Shifting balance theory

103.) What is the name of the effect that predicts that the universe will continue to expand at an accelerating rate, which was discovered by observing distant supernovae?

  • Accelerating expansion
  • Big Crunch
  • Inflationary universe
  • Steady state theory

104.) Which hypothesis suggests that most genetic variations in populations result from drift rather than selection pressures?

  • Adaptive radiation hypothesis
  • Neutral theory of molecular evolution
  • Reciprocal altruism hypothesis
  • Sexual selection theory

105.) Which prominent German mathematician formulated the first complete axiomatization of Euclidean geometry?

  • Bernhard Riemann
  • Carl Friedrich Gauss
  • David Hilbert
  • Felix Klein

106.) What is the measure in information theory, named after Claude Shannon, that quantifies the expected value of the information contained in a message?

  • Hartley function
  • Kolmogorov complexity
  • Nyquist rate
  • Shannon entropy

107.) What is the conjecture in theoretical physics that suggests every consistent theory of quantum gravity must include supersymmetry?

  • Grand unified theory
  • Loop quantum gravity
  • String theory
  • Supergravity

108.) Which mathematical concept in chaos theory describes a situation where small changes in initial conditions can lead to vastly different outcomes?

  • Lorenz System
  • Mandelbrot Effect
  • Newton's Method
  • Sensitive Dependence on Initial Conditions

109.) What is the name of the Nobel Prize-winning physicist who proposed the exclusion principle for fermions?

  • Enrico Fermi
  • Niels Bohr
  • Richard Feynman
  • Wolfgang Pauli

110.) In quantum field theory, what principle is used to regulate infinite values by introducing cutoff scales for calculations?

  • Gauge invariance
  • Renormalization
  • Superposition
  • Symmetry breaking

111.) Which protein's misfolding is associated with Creutzfeldt-Jakob disease in humans?

  • Albumin
  • Collagen
  • Keratin
  • Prion protein

112.) In the Standard Model of particle physics, which gauge bosons mediate the weak nuclear force?

  • Gluon
  • Graviton
  • Photon
  • W and Z bosons

113.) In chaos theory, what term refers to the constant governing the geometric relationship in period-doubling bifurcations leading to chaos?

  • Feigenbaum constant
  • Julia set
  • Lorenz attractor
  • Mandelbrot set

114.) What is the name of the set of symmetries in quantum field theory that provides for the invariance of a physical law under rotations and translations in spacetime?

  • Lorentz group
  • Poincaré group
  • SU(3) symmetry
  • U(1) symmetry

115.) In photonics, what is the term for a material that allows the control of light waves beyond traditional lenses and reflectors by manipulating refraction?

  • Metamaterials
  • Photonic crystals
  • Plasmonics
  • Quantum dots

116.) In general relativity, what is the term for the mathematical description of a black hole in empty space devoid of rotation and charge?

  • Kerr metric
  • Kerr-Newman metric
  • Reissner-Nordström metric
  • Schwarzschild metric

117.) In particle physics, what is the term for hypothetical particles that mediate gravitational force but are not part of the Standard Model?

  • Bosons
  • Gravitons
  • Preons
  • Tachyons

118.) What is the hypothetical form of energy that permeates all of space and is theorized to accelerate the expansion of the universe?

  • Dark energy
  • Neutrino energy
  • Phantom energy
  • Quantum foam

119.) Which principle in plasma physics describes the confinement of a plasma using magnetic fields to maintain stability in fusion reactors?

  • Adiabatic confinement
  • Magnetic confinement
  • Magnetic reconnection
  • Quantum confinement

120.) Which subatomic particle discovered in 1932 confirmed the existence of antimatter as predicted by quantum theory?

  • Antiproton
  • Kaon
  • Neutron
  • Positron

121.) Which theory proposes that the universe has no boundary and does not require an initial state or moment of singularity?

  • Ekpyrotic Model
  • No Boundary Proposal
  • Steady State Theory
  • String Theory

123.) Which theory proposes that the universe has no boundary and does not require an initial state or moment of singularity?

  • Ekpyrotic Model
  • No Boundary Proposal
  • Steady State Theory
  • String Theory

+379 more Science trivia questions

Looking for even more Science trivia?

TriviaBear has over 500 Science trivia questions and answers for you to enjoy, ranging from easy to very difficult, and we're adding more every day.

Science trivia is a fun way to learn cool facts and test your knowledge about the world around us! When you answer a science trivia question, you're diving into topics like plants, animals, space, and more. I love discovering new things through trivia, and you can impress your friends with awesome answers. So, are you ready to explore the amazing world of science with me? Let's get started!

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