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