Puzzle Detail
Classic Crosswords Classic Nature Hard — Set 6
🔬 Science Crossword #1
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Across
- 1. Mixture producing intense heat
- 5. A word related to science
- 6. Force attracting objects to Earth
- 8. Solid with ordered atomic structure
- 10. A word related to science
- 11. Diffusion of water through a membrane
- 12. One body blocking another in space
Down
- 2. Device for controlled nuclear reactions
- 3. A word related to science
- 4. A word related to science
- 7. Fourth state of matter
- 9. Preserved remains of ancient life
Show answers
- 1 Across: Mixture producing intense heat (7)THERMIT
- 5 Across: A word related to science (8)MANDIBLE
- 6 Across: Force attracting objects to Earth (7)GRAVITY
- 8 Across: Solid with ordered atomic structure (7)CRYSTAL
- 10 Across: A word related to science (9)NOCTURNAL
- 11 Across: Diffusion of water through a membrane (7)OSMOSIS
- 12 Across: One body blocking another in space (7)ECLIPSE
- 2 Down: Device for controlled nuclear reactions (7)REACTOR
- 3 Down: A word related to science (4)MOLT
- 4 Down: A word related to science (6)MAGGOT
- 7 Down: Fourth state of matter (6)PLASMA
- 9 Down: Preserved remains of ancient life (6)FOSSIL
🔬 Science Crossword #2
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Across
- 4. Naturally occurring inorganic solid
- 8. A word related to science
- 9. Diffusion of water through a membrane
- 10. Uncharged particle in nucleus
Down
- 1. Force attracting objects to Earth
- 2. Pure substance on periodic table
- 3. Positively charged particle
- 5. Group of similar living organisms
- 6. One body blocking another in space
- 7. Slow-moving river of ice
Show answers
- 4 Across: Naturally occurring inorganic solid (7)MINERAL
- 8 Across: A word related to science (12)BENEFICIALLY
- 9 Across: Diffusion of water through a membrane (7)OSMOSIS
- 10 Across: Uncharged particle in nucleus (7)NEUTRON
- 1 Down: Force attracting objects to Earth (7)GRAVITY
- 2 Down: Pure substance on periodic table (7)ELEMENT
- 3 Down: Positively charged particle (6)PROTON
- 5 Down: Group of similar living organisms (7)SPECIES
- 6 Down: One body blocking another in space (7)ECLIPSE
- 7 Down: Slow-moving river of ice (7)GLACIER
🔬 Science Crossword #3
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Across
- 2. A word related to science
- 6. Wearing away of land by water or wind
- 9. A word related to science
- 11. Diffusion of water through a membrane
- 12. Device for controlled nuclear reactions
- 13. A word related to science
Down
- 1. Center of an atom or cell
- 3. Fourth state of matter
- 4. One body blocking another in space
- 5. Positively charged particle
- 7. Uncharged particle in nucleus
- 8. Substance providing immunity
- 10. Large molecule essential for life
Show answers
- 2 Across: A word related to science (12)COMPOUND EYE
- 6 Across: Wearing away of land by water or wind (7)EROSION
- 9 Across: A word related to science (8)PARASITE
- 11 Across: Diffusion of water through a membrane (7)OSMOSIS
- 12 Across: Device for controlled nuclear reactions (7)REACTOR
- 13 Across: A word related to science (9)NOCTURNAL
- 1 Down: Center of an atom or cell (7)NUCLEUS
- 3 Down: Fourth state of matter (6)PLASMA
- 4 Down: One body blocking another in space (7)ECLIPSE
- 5 Down: Positively charged particle (6)PROTON
- 7 Down: Uncharged particle in nucleus (7)NEUTRON
- 8 Down: Substance providing immunity (7)VACCINE
- 10 Down: Large molecule essential for life (7)PROTEIN
🔬 Science Crossword #4
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Across
- 3. A word related to science
- 4. Biological catalyst for reactions
- 6. Solid with ordered atomic structure
- 9. A word related to science
- 10. Wearing away of land by water or wind
- 11. Positively charged particle
Down
- 1. Force attracting objects to Earth
- 2. Naturally occurring inorganic solid
- 5. Center of an atom or cell
- 7. Mixture producing intense heat
- 8. Smallest discrete unit of energy
- 9. A word related to science
Show answers
- 3 Across: A word related to science (5)APHID
- 4 Across: Biological catalyst for reactions (6)ENZYME
- 6 Across: Solid with ordered atomic structure (7)CRYSTAL
- 9 Across: A word related to science (4)MOLT
- 10 Across: Wearing away of land by water or wind (7)EROSION
- 11 Across: Positively charged particle (6)PROTON
- 1 Down: Force attracting objects to Earth (7)GRAVITY
- 2 Down: Naturally occurring inorganic solid (7)MINERAL
- 5 Down: Center of an atom or cell (7)NUCLEUS
- 7 Down: Mixture producing intense heat (7)THERMIT
- 8 Down: Smallest discrete unit of energy (7)QUANTUM
- 9 Down: A word related to science (6)MAGGOT
🔬 Science Crossword #5
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Across
- 1. Wearing away of land by water or wind
- 7. Diffusion of water through a membrane
- 8. Slow-moving river of ice
- 9. Uncharged particle in nucleus
- 10. Pure substance on periodic table
Down
- 2. Group of similar living organisms
- 3. A word related to science
- 4. A word related to science
- 5. A word related to science
- 6. Fourth state of matter
Show answers
- 1 Across: Wearing away of land by water or wind (7)EROSION
- 7 Across: Diffusion of water through a membrane (7)OSMOSIS
- 8 Across: Slow-moving river of ice (7)GLACIER
- 9 Across: Uncharged particle in nucleus (7)NEUTRON
- 10 Across: Pure substance on periodic table (7)ELEMENT
- 2 Down: Group of similar living organisms (7)SPECIES
- 3 Down: A word related to science (8)MANDIBLE
- 4 Down: A word related to science (12)COMPOUND EYE
- 5 Down: A word related to science (7)ABDOMEN
- 6 Down: Fourth state of matter (6)PLASMA
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.
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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.