Science Crossword Puzzles: Free Printable and Online

Explore the fundamental principles and latest discoveries across physics, chemistry, biology, and astronomy. This topic covers scientific methods and breakthroughs.

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science

Easy · 5×5 · 4 words
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  1. 3. The form of energy that allows us to see
  2. 4. A massive luminous sphere of plasma in space

Down

  1. 1. The smallest structural unit of a living organism
  2. 2. A clear liquid essential for all known life

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element, periodic table, chemical symbol, compound, chemical formula, physical change, chemical change

Medium · 11×11 · 14 words
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  1. 4. Inert noble gas glowing reddish-orange in high-voltage signs
  2. 6. Pure substance composed entirely of atoms with identical proton counts
  3. 7. Malleable post-transition metal designated by Sn
  4. 9. Substance that accelerates a reaction without being consumed
  5. 12. Binary compound containing oxygen bound to another element
  6. 13. Attractive forces that hold atoms together within molecules
  7. 14. Dense, toxic heavy metal bearing the symbol Pb

Down

  1. 1. Shift from a rigid solid into a fluid state by absorbing heat
  2. 2. Rapid exothermic chemical reaction between fuel and an oxidant
  3. 3. Ubiquitous compound composed of two hydrogens and one oxygen
  4. 5. Chemical change characterized by the loss of electrons
  5. 8. Outermost electrons responsible for dictating chemical reactivity
  6. 10. Undergo a rapid phase transition from liquid into vapor
  7. 11. Flaky reddish product of iron reacting with oxygen and water

element, periodic table, chemical symbol, compound, chemical formula, physical change chemical change

Medium · 11×11 · 14 words
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  1. 1. Flaky reddish product formed by iron oxidation
  2. 3. Lustrous, conductive element located on the left and center of the table
  3. 8. Undergo a physical change from solid to liquid
  4. 9. Substance formed when two or more elements chemically unite
  5. 11. Ionic compounds produced alongside water during acid-base neutralization
  6. 13. Binary compound containing oxygen combined with another element
  7. 14. Inert noble gas famous for brilliant reddish-orange signage

Down

  1. 2. Direct physical phase change from solid to gas without melting
  2. 4. Pure chemical substance that cannot be broken down by ordinary reactions
  3. 5. Versatile tetravalent backbone of all organic molecules
  4. 6. Starting material consumed during a chemical transformation
  5. 7. Basic building block of all chemical elements
  6. 10. Dense element denoted by the symbol Pb
  7. 12. Magnetic metal whose symbol derives from ferrum

Astronomy

Easy · 5×5 · 5 words
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  1. 1. The United States government agency responsible for the civilian space program
  2. 2. The second planet from the sun
  3. 4. The natural satellite that orbits the Earth

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  1. 1. A star that suddenly increases in brightness
  2. 3. The star at the center of our solar system

sobre propiedades físicas y químicas de la materia.

Easy · 5×5 · 6 words
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  1. 1. State of matter with no fixed shape or volume.
  2. 4. Material that is typically shiny and conducts electricity.
  3. 5. Smallest unit of an element.

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  1. 2. Solid compound formed by an acid and a base.
  2. 3. Phase change from solid to liquid.

Famous Inventions

Medium · 11×11 · 13 words
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  1. 1. Magnetic needle that steered early oceanic explorers
  2. 4. Weapon born from Chinese alchemical experiments
  3. 7. Biro's revolutionary rolling writing implement
  4. 8. Bladed rotor used in modern power plants and jet engines
  5. 9. Escapement-regulated device keeping society on schedule
  6. 10. Acoustic pinging device used by navies and submariners
  7. 11. Faraday's electromagnetic spinner that drives industry
  8. 12. Curved glass essential for spectacles and spyglasses

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  1. 2. Fleming's accidental fungal discovery that cured millions
  2. 3. Fastener originally marketed as the clasp locker
  3. 4. Toothed wheel vital to classical clockwork mechanisms
  4. 5. Galileo's stargazing tube that upended astronomy
  5. 6. Global computer network with roots in ARPANET

anatomy

Easy · 7×7 · 7 words
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  1. 1. Limb used for walking
  2. 6. Organ where digestion begins
  3. 7. Organ used for sight

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  1. 2. Hinge joint in the arm
  2. 3. Tissue that allows movement
  3. 4. Organ that controls the body
  4. 5. Opposable digit on the hand

psoriasis

Medium · 11×11 · 14 words
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  1. 3. Mental or emotional strain that frequently incites new outbreaks
  2. 5. Moisturizing agent that softens dry, hyperkeratotic borders
  3. 9. Painful inflammation of skeletal hinges tied to this skin disorder
  4. 11. Drop-like variant that often follows a streptococcal infection
  5. 12. Lower-limb hinge joint frequently afflicted by extensor plaques
  6. 13. Phototherapy component, often focused as narrow-band UVB

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  1. 1. Emollient formulation smoothed over irritated zones
  2. 2. Wintry weather condition known to trigger dry, cracked flare-ups
  3. 3. The human body's largest organ, bearing the brunt of flare-ups
  4. 4. Silvery flaky buildup shed from rapidly dividing cells
  5. 6. Applied directly to the epidermal surface rather than swallowed
  6. 7. Catalyst like tobacco, illness, or trauma that starts a flare
  7. 8. Thimble-like tiny indentations scattered across digit surfaces
  8. 10. Hereditary unit such as PSORS1 that predisposes one to plaques

food nd nutrition and health

Medium · 11×11 · 15 words
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  1. 5. Fatty acid classification with healthy numbers three, six, and nine
  2. 7. Edible seed of a legume such as dry peas, lentils, or chickpeas
  3. 10. Complex sum of biochemical processes converting food into cellular energy
  4. 12. Versatile legume used to create tofu, tempeh, and edamame
  5. 14. Small hard dry seed harvested from crops like barley, rye, or wheat
  6. 15. Organic molecule group including fats, waxes, and sterols

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  1. 1. Electrolyte component of salt restricted in diets for hypertension
  2. 2. Cereal grain often rolled for a hearty breakfast porridge
  3. 3. Simple blood sugar that serves as primary fuel for cellular respiration
  4. 4. Plant-exclusive dietary lifestyle avoiding all animal products
  5. 6. Shell-bound breakfast staple loaded with choline and complete protein
  6. 8. Structural fibrous protein providing elasticity to skin, cartilage, and tendons
  7. 9. Unit of energy derived from food and expended during metabolic work
  8. 11. Curly leafy green often baked into chips or tossed in salads
  9. 13. Immune-boosting mineral found in abundance inside raw oysters

food nd nutrition and health

Easy · 11×11 · 15 words
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  1. 1. Indigestible plant material that supports smooth digestive health
  2. 4. The essential clear liquid required by all living organisms for hydration
  3. 5. A crisp round fruit that proverbially keeps the doctor away
  4. 8. Food produced without synthetic fertilizers, pesticides, or genetic modification
  5. 10. The regular combination of foods and beverages consumed by an individual
  6. 12. A dietary mineral abundant in table salt that regulates fluids
  7. 13. A cereal grain commonly rolled and cooked into warm morning porridge
  8. 14. A hard-shelled seed like an almond or walnut that provides healthy fats

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  1. 2. A protein-packed legume such as kidney, black, or pinto
  2. 3. A small round green seed that grows inside a pod
  3. 4. The ongoing active pursuit of good physical and mental health
  4. 6. A dish composed mostly of raw mixed vegetables like lettuce and tomatoes
  5. 7. A macronutrient made of amino acids essential for building and repairing muscle
  6. 9. An orange root vegetable high in beta-carotene for good eye vision
  7. 11. A vital mineral that helps red blood cells carry oxygen throughout the body
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Related Printable Crossword Topics

AnatomyAstronomyBiologyChemistryEcologyFamous InventionsFood ChainsGenetics & DNAHuman BodyMedicineNutrition & DietPeriodic Table

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