Challenge Crosswords Science Hard — Set 6
🔬 Science Crossword #1
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Across
- 1. Substance providing immunity
- 3. Uncharged particle in nucleus
- 5. Diffusion of water through a membrane
- 8. Smallest discrete unit of energy
- 9. Fourth state of matter
- 10. Large molecule essential for life
- 11. A word related to science
Down
- 2. Wearing away of land by water or wind
- 4. Preserved remains of ancient life
- 6. A word related to science
- 7. Slow-moving river of ice
Show answers
- 1 Across: Substance providing immunity (7)VACCINE
- 3 Across: Uncharged particle in nucleus (7)NEUTRON
- 5 Across: Diffusion of water through a membrane (7)OSMOSIS
- 8 Across: Smallest discrete unit of energy (7)QUANTUM
- 9 Across: Fourth state of matter (6)PLASMA
- 10 Across: Large molecule essential for life (7)PROTEIN
- 11 Across: A word related to science (12)REPRODUCTION
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 4 Down: Preserved remains of ancient life (6)FOSSIL
- 6 Down: A word related to science (8)SAUROPOD
- 7 Down: Slow-moving river of ice (7)GLACIER
🔬 Science Crossword #2
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Across
- 1. Group of similar living organisms
- 5. Center of an atom or cell
- 8. A word related to science
- 10. Force attracting objects to Earth
- 11. Positively charged particle
Down
- 2. A word related to science
- 3. A word related to science
- 4. Diffusion of water through a membrane
- 6. A word related to science
- 7. Substance providing immunity
- 9. Solid with ordered atomic structure
Show answers
- 1 Across: Group of similar living organisms (7)SPECIES
- 5 Across: Center of an atom or cell (7)NUCLEUS
- 8 Across: A word related to science (8)PARASITE
- 10 Across: Force attracting objects to Earth (7)GRAVITY
- 11 Across: Positively charged particle (6)PROTON
- 2 Down: A word related to science (12)EXPERIMENTAL
- 3 Down: A word related to science (8)SAUROPOD
- 4 Down: Diffusion of water through a membrane (7)OSMOSIS
- 6 Down: A word related to science (8)THEROPOD
- 7 Down: Substance providing immunity (7)VACCINE
- 9 Down: Solid with ordered atomic structure (7)CRYSTAL
🔬 Science Crossword #3
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Across
- 1. One body blocking another in space
- 3. Group of similar living organisms
- 5. Substance providing immunity
- 8. Wearing away of land by water or wind
- 10. Force attracting objects to Earth
- 11. Center of an atom or cell
- 12. Smallest discrete unit of energy
- 13. Preserved remains of ancient life
Down
- 2. Solid with ordered atomic structure
- 4. A word related to science
- 6. A word related to science
- 7. Positively charged particle
- 9. Uncharged particle in nucleus
Show answers
- 1 Across: One body blocking another in space (7)ECLIPSE
- 3 Across: Group of similar living organisms (7)SPECIES
- 5 Across: Substance providing immunity (7)VACCINE
- 8 Across: Wearing away of land by water or wind (7)EROSION
- 10 Across: Force attracting objects to Earth (7)GRAVITY
- 11 Across: Center of an atom or cell (7)NUCLEUS
- 12 Across: Smallest discrete unit of energy (7)QUANTUM
- 13 Across: Preserved remains of ancient life (6)FOSSIL
- 2 Down: Solid with ordered atomic structure (7)CRYSTAL
- 4 Down: A word related to science (11)APATOSAURUS
- 6 Down: A word related to science (10)CRETACEOUS
- 7 Down: Positively charged particle (6)PROTON
- 9 Down: Uncharged particle in nucleus (7)NEUTRON
🔬 Science Crossword #4
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Across
- 2. Positively charged particle
- 8. Solid with ordered atomic structure
- 9. Large molecule essential for life
- 11. Preserved remains of ancient life
- 12. A word related to science
Down
- 1. A word related to science
- 3. A word related to science
- 4. Slow-moving river of ice
- 5. A word related to science
- 6. Substance providing immunity
- 7. Wearing away of land by water or wind
- 10. Center of an atom or cell
Show answers
- 2 Across: Positively charged particle (6)PROTON
- 8 Across: Solid with ordered atomic structure (7)CRYSTAL
- 9 Across: Large molecule essential for life (7)PROTEIN
- 11 Across: Preserved remains of ancient life (6)FOSSIL
- 12 Across: A word related to science (11)APATOSAURUS
- 1 Down: A word related to science (10)CRETACEOUS
- 3 Down: A word related to science (8)THEROPOD
- 4 Down: Slow-moving river of ice (7)GLACIER
- 5 Down: A word related to science (12)GENERATIONAL
- 6 Down: Substance providing immunity (7)VACCINE
- 7 Down: Wearing away of land by water or wind (7)EROSION
- 10 Down: Center of an atom or cell (7)NUCLEUS
🔬 Science Crossword #5
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Across
- 1. Force attracting objects to Earth
- 3. Wearing away of land by water or wind
- 6. One body blocking another in space
- 8. Center of an atom or cell
- 9. Preserved remains of ancient life
Down
- 2. A word related to science
- 3. A word related to science
- 4. Uncharged particle in nucleus
- 5. Naturally occurring inorganic solid
- 7. Device for controlled nuclear reactions
Show answers
- 1 Across: Force attracting objects to Earth (7)GRAVITY
- 3 Across: Wearing away of land by water or wind (7)EROSION
- 6 Across: One body blocking another in space (7)ECLIPSE
- 8 Across: Center of an atom or cell (7)NUCLEUS
- 9 Across: Preserved remains of ancient life (6)FOSSIL
- 2 Down: A word related to science (12)REPRODUCTION
- 3 Down: A word related to science (12)EXPERIMENTAL
- 4 Down: Uncharged particle in nucleus (7)NEUTRON
- 5 Down: Naturally occurring inorganic solid (7)MINERAL
- 7 Down: Device for controlled nuclear reactions (7)REACTOR
Solver Notes
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What are challenge crossword puzzles?
Challenge crossword puzzles are expert-level word games featuring advanced vocabulary, complex clue structures, and larger grids. They are designed for experienced crossword solvers who want to push their skills beyond standard difficulty levels.
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Challenge crosswords are best suited for adults and advanced students who already have strong crossword-solving experience. The difficult clues and specialized vocabulary assume familiarity with crossword conventions and a broad knowledge base.
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What is the difference between challenge and daily crosswords?
Daily crosswords offer moderate difficulty suitable for regular solving sessions, while challenge crosswords feature significantly harder clues and more obscure vocabulary. Challenge puzzles typically take longer to complete and reward deep knowledge across many subjects.