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