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