Printable Science Crosswords

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

10 puzzles — click Print on any puzzle below

Solar System

Hard · 15×15 · 18 words
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Across

  1. 2. An asteroid that hides in a planet's orbit, no horse required
  2. 5. Smoked fish found in the belt of a small icy world
  3. 7. The frozen nursery at the very edge of the neighborhood
  4. 9. The thin air at the exit of the world
  5. 11. The ultimate divider between the light and the dark
  6. 15. Dry seas that never saw a drop of water
  7. 16. The absolute bottom of the celestial sphere
  8. 17. The brilliance of a surface, reflection without thought

Down

  1. 1. A close encounter of the lunar kind
  2. 2. Terrestrial rock with a cosmic melt
  3. 3. The rhythm of an eighteen-year shadow dance
  4. 4. A tiny glass bead fallen from the heavens
  5. 6. A grain of truth that grew into a world
  6. 8. The border where the sun finally loses its breath
  7. 10. A loop of flame that demands your attention
  8. 12. The point of greatest social distancing from the host
  9. 13. Small moon of Saturn or a Greek soul
  10. 14. The vast collection of absolutely nothing

Solar System

Medium · 11×11 · 14 words
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Across

  1. 1. A bowl-shaped scar left by a cosmic impact
  2. 3. A streak of light caused by a falling rock
  3. 5. The empty space between celestial structures
  4. 7. Rocky wanderer found mostly between Mars and Jupiter
  5. 11. The hottest neighbor, often mistaken for a star
  6. 12. Polar light show caused by solar wind
  7. 13. The rusty world named for a god of war

Down

  1. 1. The sun's outermost layer, visible during totality
  2. 2. The distant cloud that marks the edge of the system
  3. 4. When one celestial body casts a shadow on another
  4. 6. The swift planet with the shortest year
  5. 8. The ringed beauty that could float in water
  6. 9. The changing appearances of the moon
  7. 10. Relating to the Earth's natural satellite

Solar System

Easy · 7×7 · 7 words
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Across

  1. 1. The vast area that contains all the planets
  2. 5. How Earth differs from all other known planets
  3. 7. The sixth planet famous for its visible rings

Down

  1. 2. The very center of a planet or star
  2. 3. A burning ball of gas visible in the night sky
  3. 4. Energy from the Sun that helps plants grow
  4. 6. The star at the center of our solar system

Periodic Table

Hard · 15×15 · 24 words
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Across

  1. 1. The standard of perfection that's 79 parts precious
  2. 7. Pressing matter for a blacksmith
  3. 8. Salt producer found in a messy halo Gen Z might recognize
  4. 9. A horizontal row that brings a sentence to a full stop
  5. 14. Relatively speaking, this element is named for a genius
  6. 16. A charged atom that's always in fashion
  7. 17. Not quite a moron, just the fifth element
  8. 18. A subterranean mammal's unit of measure
  9. 20. The sun's voice-altering inheritance
  10. 21. The outermost shell's capacity for a hanging drapery
  11. 22. The densest character in the entire cast
  12. 23. The 50th anniversary metal that is just a little thin
  13. 24. The brightest lights on Broadway

Down

  1. 2. A heavy metal that takes the front position
  2. 3. Kitchen basin metal for the galvanized
  3. 4. A gas that is a hero's undoing
  4. 5. The number one water generator
  5. 6. K, I will just have a banana
  6. 10. Life's backbone found in a diamond or a pencil
  7. 11. A radioactive series that sounds like a theatrical performance
  8. 12. Named for a cold dwarf, it fuels a heavy reaction
  9. 13. Stibnite's gift that sounds like it's against cash
  10. 15. Blue hue found in a mischievous sprite and a lightning bolt
  11. 19. A stranger among the noble gases

Periodic Table

Medium · 11×11 · 14 words
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Across

  1. 2. Five-cent element often used in stainless steel
  2. 5. Element number five used in heat-resistant glassware
  3. 6. Colorless, odorless radioactive gas that can leak into basements
  4. 9. Strong, light metal used in aerospace and joint replacements
  5. 12. Metallic element found at the core of the Earth and your blood
  6. 13. Noble gas that gives Times Square its glow
  7. 14. Metal used to coat cans, symbolized by Sn

Down

  1. 1. Transition metal known for its deep blue pigment
  2. 3. Dense metal once used in pipes and paint, now in batteries
  3. 4. Heavy element named after the seventh planet
  4. 7. Lightweight metal used for foil and soda cans
  5. 8. The backbone of life and the primary component of diamonds
  6. 10. Halogen used as an antiseptic that turns starch purple
  7. 11. The standard of currency for millennia with symbol Au

Periodic Table

Easy · 7×7 · 7 words
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Across

  1. 2. Metal used to coat food cans
  2. 4. Short name for the metal used in foil
  3. 5. Gas in the air that we breathe
  4. 7. Heavy gray metal used in weights

Down

  1. 1. Invisible radioactive gas found in soil
  2. 3. Metal used to make steel
  3. 6. Shiny yellow precious metal

Nutrition & Diet

Hard · 15×15 · 20 words
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Across

  1. 2. To bubble with excitement in a vat of kraut
  2. 6. A slippery character that refuses to mix with water
  3. 9. A short chain of command for protein building
  4. 10. The last Greek letter for a fishy fat
  5. 14. The element that keeps the banana's reputation high
  6. 15. The rugged green that survived a thousand trendy salads
  7. 16. The slow-moving protein that curdles with intent
  8. 17. Incan treasure that masquerades as a grain
  9. 18. The heavy metal required for a bloody good circulation
  10. 19. A bitter metabolic byproduct that the liver works to evict
  11. 20. The fruit's own glue that makes the jam stick

Down

  1. 1. Right-handed sugar often found in a medical drip
  2. 3. Vitamin B3 that might leave your skin feeling flushed
  3. 4. The elastic bond in bread that some find hard to bear
  4. 5. The galvanized mineral that helps the senses stay sharp
  5. 7. State of burning the midnight oil, and the body's own reserves
  6. 8. The internal engine that decides the cost of your fuel
  7. 11. A chemical signal that tells the appetite to take a hike
  8. 12. Pigmented protector found in a glass of red or a dark bar
  9. 13. An impostor in the sugar bowl that leaves no trace on the scale

Nutrition & Diet

Medium · 11×11 · 13 words
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Across

  1. 3. Controversial dietary process of removing toxins
  2. 4. Scientific term for fats and fat-like substances
  3. 5. Fermented milk drink similar to thin yogurt
  4. 8. The chemical process of converting fuel into energy
  5. 11. Trace mineral important for immune function
  6. 12. Leafy green that became a trendy superfood icon
  7. 13. Nut frequently processed into a dairy alternative

Down

  1. 1. Mineral often hidden in processed savory snacks
  2. 2. Index that ranks how food affects blood sugar
  3. 6. Mineral essential for building strong bones
  4. 7. The amount of food served for a single person
  5. 9. Complex carbohydrate found in potatoes and pasta
  6. 10. Dietary choice that excludes all animal products

Nutrition & Diet

Easy · 7×7 · 8 words
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Across

  1. 1. White drink that is a common source of calcium
  2. 3. Small white or brown grains eaten as a staple carb
  3. 5. Grain often used to make morning porridge
  4. 7. The kinds of food that a person habitually eats

Down

  1. 1. General term for animal flesh eaten as food
  2. 2. A leafy green vegetable often used in salads
  3. 4. Mineral found in spinach and red meat
  4. 6. Seasoning also known as sodium

Human Body

Hard · 15×15 · 22 words
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Across

  1. 1. The five pillars that bear the weight of your torso
  2. 2. The arch that defines a high-cheeked look
  3. 5. The white insulation on biological wires
  4. 7. The body's rainy day fund for energy
  5. 9. The tiny hammer that strikes without a forge
  6. 12. The smooth landing strip between two brows
  7. 15. The ankle's die used for ancient games
  8. 16. An anatomical pothole for nerves to pass through
  9. 17. A spiral staircase for sound waves
  10. 19. A flat blade for a wingless creature
  11. 20. Harder than bone, but hides behind enamel

Down

  1. 1. The plumbing for your darkest moods
  2. 2. The plowshare bone within the nasal divide
  3. 3. A third eye shaped like a conifer's fruit
  4. 4. A bridge in the brain that never crosses water
  5. 6. A colorful ring named for a messenger goddess
  6. 8. The training ground where cellular soldiers learn their trade
  7. 10. The little key that unlocks the shoulder
  8. 11. To perform a ritual destruction of dinner
  9. 13. Minuscule balloons that keep the spark of life airy
  10. 14. The main trunk of the scarlet highway
  11. 18. The long-distance cable of a single cell
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