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