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