Challenge Crosswords Nature Hard — Set 5
🔬 Science Crossword #1
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Across
- 2. A word related to science
- 8. Mixture producing intense heat
- 9. Diffusion of water through a membrane
- 10. One body blocking another in space
Down
- 1. Slow-moving river of ice
- 3. A word related to science
- 4. Solid with ordered atomic structure
- 5. A word related to science
- 6. Pure substance on periodic table
- 7. Group of similar living organisms
Show answers
- 2 Across: A word related to science (12)EXPERIMENTAL
- 8 Across: Mixture producing intense heat (7)THERMIT
- 9 Across: Diffusion of water through a membrane (7)OSMOSIS
- 10 Across: One body blocking another in space (7)ECLIPSE
- 1 Down: Slow-moving river of ice (7)GLACIER
- 3 Down: A word related to science (8)PARASITE
- 4 Down: Solid with ordered atomic structure (7)CRYSTAL
- 5 Down: A word related to science (10)BENEFICIAL
- 6 Down: Pure substance on periodic table (7)ELEMENT
- 7 Down: Group of similar living organisms (7)SPECIES
🔬 Science Crossword #2
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Across
- 3. A word related to science
- 5. Slow-moving river of ice
- 8. Wearing away of land by water or wind
- 10. A word related to science
Down
- 1. One body blocking another in space
- 2. Smallest discrete unit of energy
- 4. Diffusion of water through a membrane
- 5. Force attracting objects to Earth
- 6. A word related to science
- 7. A word related to science
- 9. Preserved remains of ancient life
Show answers
- 3 Across: A word related to science (4)MOLT
- 5 Across: Slow-moving river of ice (7)GLACIER
- 8 Across: Wearing away of land by water or wind (7)EROSION
- 10 Across: A word related to science (12)EXPERIMENTAL
- 1 Down: One body blocking another in space (7)ECLIPSE
- 2 Down: Smallest discrete unit of energy (7)QUANTUM
- 4 Down: Diffusion of water through a membrane (7)OSMOSIS
- 5 Down: Force attracting objects to Earth (7)GRAVITY
- 6 Down: A word related to science (8)MANDIBLE
- 7 Down: A word related to science (8)PARASITE
- 9 Down: Preserved remains of ancient life (6)FOSSIL
🔬 Science Crossword #3
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Across
- 6. A word related to science
- 8. Smallest discrete unit of energy
- 9. Force attracting objects to Earth
- 10. A word related to science
Down
- 1. A word related to science
- 2. Substance providing immunity
- 3. Mixture producing intense heat
- 4. A word related to science
- 5. Center of an atom or cell
- 7. Uncharged particle in nucleus
Show answers
- 6 Across: A word related to science (12)COMPOUND EYE
- 8 Across: Smallest discrete unit of energy (7)QUANTUM
- 9 Across: Force attracting objects to Earth (7)GRAVITY
- 10 Across: A word related to science (8)MANDIBLE
- 1 Down: A word related to science (8)PARASITE
- 2 Down: Substance providing immunity (7)VACCINE
- 3 Down: Mixture producing intense heat (7)THERMIT
- 4 Down: A word related to science (6)MAGGOT
- 5 Down: Center of an atom or cell (7)NUCLEUS
- 7 Down: Uncharged particle in nucleus (7)NEUTRON
🔬 Science Crossword #4
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Across
- 1. A word related to science
- 5. A word related to science
- 6. Slow-moving river of ice
- 9. Positively charged particle
- 10. One body blocking another in space
Down
- 2. Wearing away of land by water or wind
- 3. A word related to science
- 4. Smallest discrete unit of energy
- 5. A word related to science
- 7. Group of similar living organisms
- 8. A word related to science
Show answers
- 1 Across: A word related to science (8)MANDIBLE
- 5 Across: A word related to science (8)PARASITE
- 6 Across: Slow-moving river of ice (7)GLACIER
- 9 Across: Positively charged particle (6)PROTON
- 10 Across: One body blocking another in space (7)ECLIPSE
- 2 Down: Wearing away of land by water or wind (7)EROSION
- 3 Down: A word related to science (12)EXPERIMENTAL
- 4 Down: Smallest discrete unit of energy (7)QUANTUM
- 5 Down: A word related to science (9)PROBOSCIS
- 7 Down: Group of similar living organisms (7)SPECIES
- 8 Down: A word related to science (9)NOCTURNAL
🔬 Science Crossword #5
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Across
- 3. A word related to science
- 4. Group of similar living organisms
- 6. Pure substance on periodic table
- 8. A word related to science
- 9. Mixture producing intense heat
- 10. A word related to science
Down
- 1. Substance providing immunity
- 2. Large molecule essential for life
- 5. Device for controlled nuclear reactions
- 7. One body blocking another in space
Show answers
- 3 Across: A word related to science (8)PARASITE
- 4 Across: Group of similar living organisms (7)SPECIES
- 6 Across: Pure substance on periodic table (7)ELEMENT
- 8 Across: A word related to science (4)MOLT
- 9 Across: Mixture producing intense heat (7)THERMIT
- 10 Across: A word related to science (9)PROBOSCIS
- 1 Down: Substance providing immunity (7)VACCINE
- 2 Down: Large molecule essential for life (7)PROTEIN
- 5 Down: Device for controlled nuclear reactions (7)REACTOR
- 7 Down: One body blocking another in space (7)ECLIPSE
Solver Notes
Ready to test your crossword expertise? Our challenge crossword puzzles feature advanced clues, complex grids, and tricky wordplay designed for experienced solvers seeking a real brain workout.
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.
How do I improve at solving challenge crosswords?
Build your skills gradually by starting with classic crosswords and working up to challenge level. Learn common crossword abbreviations, practice recognizing wordplay patterns, and expand your vocabulary across history, science, and general knowledge topics.
Are challenge crosswords suitable for all ages?
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.
How many challenge crossword puzzles are available?
Our challenge collection includes expert-level crossword puzzles covering general knowledge, history, science, and mixed topics. Each puzzle is crafted to provide a satisfying difficulty level that tests even the most seasoned crossword enthusiasts.
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.