Classic Crosswords Science Hard — Set 3
🔬 Science Crossword #1
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Across
- 1. Center of an atom or cell
- 4. Large molecule essential for life
- 9. A word related to science
- 11. Wearing away of land by water or wind
- 12. One body blocking another in space
Down
- 2. Group of similar living organisms
- 3. Naturally occurring inorganic solid
- 5. A word related to science
- 6. Positively charged particle
- 7. Slow-moving river of ice
- 8. Substance providing immunity
- 10. Preserved remains of ancient life
Show answers
- 1 Across: Center of an atom or cell (7)NUCLEUS
- 4 Across: Large molecule essential for life (7)PROTEIN
- 9 Across: A word related to science (11)APATOSAURUS
- 11 Across: Wearing away of land by water or wind (7)EROSION
- 12 Across: One body blocking another in space (7)ECLIPSE
- 2 Down: Group of similar living organisms (7)SPECIES
- 3 Down: Naturally occurring inorganic solid (7)MINERAL
- 5 Down: A word related to science (8)PARASITE
- 6 Down: Positively charged particle (6)PROTON
- 7 Down: Slow-moving river of ice (7)GLACIER
- 8 Down: Substance providing immunity (7)VACCINE
- 10 Down: Preserved remains of ancient life (6)FOSSIL
🔬 Science Crossword #2
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Across
- 3. Substance providing immunity
- 4. A word related to science
- 6. Solid with ordered atomic structure
- 7. Wearing away of land by water or wind
- 9. Large molecule essential for life
- 10. Positively charged particle
- 11. Preserved remains of ancient life
Down
- 1. Slow-moving river of ice
- 2. A word related to science
- 5. A word related to science
- 8. Uncharged particle in nucleus
Show answers
- 3 Across: Substance providing immunity (7)VACCINE
- 4 Across: A word related to science (8)THEROPOD
- 6 Across: Solid with ordered atomic structure (7)CRYSTAL
- 7 Across: Wearing away of land by water or wind (7)EROSION
- 9 Across: Large molecule essential for life (7)PROTEIN
- 10 Across: Positively charged particle (6)PROTON
- 11 Across: Preserved remains of ancient life (6)FOSSIL
- 1 Down: Slow-moving river of ice (7)GLACIER
- 2 Down: A word related to science (10)CRETACEOUS
- 5 Down: A word related to science (11)KINESTHETIC
- 8 Down: Uncharged particle in nucleus (7)NEUTRON
🔬 Science Crossword #3
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Across
- 2. Group of similar living organisms
- 3. Substance providing immunity
- 7. A word related to science
- 9. Uncharged particle in nucleus
Down
- 1. Force attracting objects to Earth
- 2. A word related to science
- 4. Fourth state of matter
- 5. Mixture producing intense heat
- 6. Device for controlled nuclear reactions
- 8. A word related to science
Show answers
- 2 Across: Group of similar living organisms (7)SPECIES
- 3 Across: Substance providing immunity (7)VACCINE
- 7 Across: A word related to science (10)CRETACEOUS
- 9 Across: Uncharged particle in nucleus (7)NEUTRON
- 1 Down: Force attracting objects to Earth (7)GRAVITY
- 2 Down: A word related to science (12)SPECIFICALLY
- 4 Down: Fourth state of matter (6)PLASMA
- 5 Down: Mixture producing intense heat (7)THERMIT
- 6 Down: Device for controlled nuclear reactions (7)REACTOR
- 8 Down: A word related to science (8)SAUROPOD
🔬 Science Crossword #4
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Across
- 7. A word related to science
- 9. Pure substance on periodic table
- 10. Positively charged particle
Down
- 1. Smallest discrete unit of energy
- 2. Mixture producing intense heat
- 3. Solid with ordered atomic structure
- 4. Substance providing immunity
- 5. One body blocking another in space
- 6. Slow-moving river of ice
- 8. Large molecule essential for life
Show answers
- 7 Across: A word related to science (12)METICULOUSLY
- 9 Across: Pure substance on periodic table (7)ELEMENT
- 10 Across: Positively charged particle (6)PROTON
- 1 Down: Smallest discrete unit of energy (7)QUANTUM
- 2 Down: Mixture producing intense heat (7)THERMIT
- 3 Down: Solid with ordered atomic structure (7)CRYSTAL
- 4 Down: Substance providing immunity (7)VACCINE
- 5 Down: One body blocking another in space (7)ECLIPSE
- 6 Down: Slow-moving river of ice (7)GLACIER
- 8 Down: Large molecule essential for life (7)PROTEIN
🔬 Science Crossword #5
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Across
- 2. Force attracting objects to Earth
- 3. A word related to science
- 8. One body blocking another in space
- 9. Mixture producing intense heat
- 10. Preserved remains of ancient life
Down
- 1. A word related to science
- 2. Slow-moving river of ice
- 4. Naturally occurring inorganic solid
- 5. Fourth state of matter
- 6. Uncharged particle in nucleus
- 7. Large molecule essential for life
Show answers
- 2 Across: Force attracting objects to Earth (7)GRAVITY
- 3 Across: A word related to science (8)SAUROPOD
- 8 Across: One body blocking another in space (7)ECLIPSE
- 9 Across: Mixture producing intense heat (7)THERMIT
- 10 Across: Preserved remains of ancient life (6)FOSSIL
- 1 Down: A word related to science (11)APATOSAURUS
- 2 Down: Slow-moving river of ice (7)GLACIER
- 4 Down: Naturally occurring inorganic solid (7)MINERAL
- 5 Down: Fourth state of matter (6)PLASMA
- 6 Down: Uncharged particle in nucleus (7)NEUTRON
- 7 Down: Large molecule essential for life (7)PROTEIN
Solver Notes
Enjoy our collection of classic crossword puzzles featuring traditional grid layouts and a wide range of topics. Each puzzle is free to download, print, and solve at your own pace.
What are classic crossword puzzles?
Classic crossword puzzles use a traditional symmetric grid where solvers fill in words based on numbered clues. Each puzzle features interlocking horizontal and vertical answers that share common letters, creating an engaging word challenge.
How do I solve a classic crossword puzzle?
Start with the clues you know for certain and fill in those answers first. Use the crossing letters to help you figure out harder clues. Work through the across and down clues systematically, and don't be afraid to use a pencil so you can erase.
Who are classic crosswords best suited for?
Classic crossword puzzles are ideal for adults and older students who enjoy vocabulary challenges and general knowledge trivia. They work well for solo relaxation, classroom activities, or group puzzle-solving sessions.
How many classic crossword puzzles are available?
Our library includes dozens of classic crossword puzzles spanning topics like general knowledge, geography, history, and sports. New puzzles are added regularly so you always have fresh challenges to print and solve.
What is the difference between classic and quick crosswords?
Classic crossword puzzles use larger grids with more complex clues and require broader vocabulary knowledge. Quick crosswords feature smaller grids and simpler clues, making them faster to complete and more accessible for beginners.