Challenge Crosswords Nature Expert — Set 9
🔬 Science Crossword #1
| 1 | 2 | |||||||||||||
| 3 | ||||||||||||||
| 4 | ||||||||||||||
| 5 | ||||||||||||||
| 6 | ||||||||||||||
| 7 | ||||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
Across
- 3. Device for controlled nuclear reactions
- 5. Mixture producing intense heat
- 7. Large molecule essential for life
- 8. Fourth state of matter
- 9. Naturally occurring inorganic solid
Down
- 1. Solid with ordered atomic structure
- 2. Slow-moving river of ice
- 4. Uncharged particle in nucleus
- 6. Biological catalyst for reactions
- 7. Positively charged particle
Show answers
- 3 Across: Device for controlled nuclear reactions (7)REACTOR
- 5 Across: Mixture producing intense heat (7)THERMIT
- 7 Across: Large molecule essential for life (7)PROTEIN
- 8 Across: Fourth state of matter (6)PLASMA
- 9 Across: Naturally occurring inorganic solid (7)MINERAL
- 1 Down: Solid with ordered atomic structure (7)CRYSTAL
- 2 Down: Slow-moving river of ice (7)GLACIER
- 4 Down: Uncharged particle in nucleus (7)NEUTRON
- 6 Down: Biological catalyst for reactions (6)ENZYME
- 7 Down: Positively charged particle (6)PROTON
🔬 Science Crossword #2
| 1 | ||||||||||||||
| 2 | ||||||||||||||
| 3 | ||||||||||||||
| 4 | 5 | |||||||||||||
| 6 | 7 | |||||||||||||
| 8 | 9 | |||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
| 12 | ||||||||||||||
Across
- 2. Smallest discrete unit of energy
- 4. Device for controlled nuclear reactions
- 8. Biological catalyst for reactions
- 10. Naturally occurring inorganic solid
- 11. Pure substance on periodic table
- 12. Group of similar living organisms
Down
- 1. Substance providing immunity
- 3. Force attracting objects to Earth
- 5. One body blocking another in space
- 6. Mixture producing intense heat
- 7. Solid with ordered atomic structure
- 9. Center of an atom or cell
Show answers
- 2 Across: Smallest discrete unit of energy (7)QUANTUM
- 4 Across: Device for controlled nuclear reactions (7)REACTOR
- 8 Across: Biological catalyst for reactions (6)ENZYME
- 10 Across: Naturally occurring inorganic solid (7)MINERAL
- 11 Across: Pure substance on periodic table (7)ELEMENT
- 12 Across: Group of similar living organisms (7)SPECIES
- 1 Down: Substance providing immunity (7)VACCINE
- 3 Down: Force attracting objects to Earth (7)GRAVITY
- 5 Down: One body blocking another in space (7)ECLIPSE
- 6 Down: Mixture producing intense heat (7)THERMIT
- 7 Down: Solid with ordered atomic structure (7)CRYSTAL
- 9 Down: Center of an atom or cell (7)NUCLEUS
🔬 Science Crossword #3
| 1 | 2 | |||||||||||||
| 3 | 4 | |||||||||||||
| 5 | ||||||||||||||
| 6 | 7 | |||||||||||||
| 8 | ||||||||||||||
| 9 | 10 | |||||||||||||
| 11 | ||||||||||||||
| 12 | ||||||||||||||
| 13 | ||||||||||||||
Across
- 3. Slow-moving river of ice
- 6. Large molecule essential for life
- 8. Diffusion of water through a membrane
- 9. Naturally occurring inorganic solid
- 11. Center of an atom or cell
- 12. Group of similar living organisms
- 13. Force attracting objects to Earth
Down
- 1. Fourth state of matter
- 2. Smallest discrete unit of energy
- 4. Wearing away of land by water or wind
- 5. Preserved remains of ancient life
- 7. One body blocking another in space
- 10. Pure substance on periodic table
Show answers
- 3 Across: Slow-moving river of ice (7)GLACIER
- 6 Across: Large molecule essential for life (7)PROTEIN
- 8 Across: Diffusion of water through a membrane (7)OSMOSIS
- 9 Across: Naturally occurring inorganic solid (7)MINERAL
- 11 Across: Center of an atom or cell (7)NUCLEUS
- 12 Across: Group of similar living organisms (7)SPECIES
- 13 Across: Force attracting objects to Earth (7)GRAVITY
- 1 Down: Fourth state of matter (6)PLASMA
- 2 Down: Smallest discrete unit of energy (7)QUANTUM
- 4 Down: Wearing away of land by water or wind (7)EROSION
- 5 Down: Preserved remains of ancient life (6)FOSSIL
- 7 Down: One body blocking another in space (7)ECLIPSE
- 10 Down: Pure substance on periodic table (7)ELEMENT
🔬 Science Crossword #4
| 1 | 2 | |||||||||||||
| 3 | ||||||||||||||
| 4 | ||||||||||||||
| 5 | 6 | 7 | ||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
| 12 |
Across
- 4. One body blocking another in space
- 8. Preserved remains of ancient life
- 10. Pure substance on periodic table
- 11. Center of an atom or cell
- 12. Slow-moving river of ice
Down
- 1. Mixture producing intense heat
- 2. Biological catalyst for reactions
- 3. Substance providing immunity
- 5. Wearing away of land by water or wind
- 6. Diffusion of water through a membrane
- 7. Large molecule essential for life
- 9. Device for controlled nuclear reactions
Show answers
- 4 Across: One body blocking another in space (7)ECLIPSE
- 8 Across: Preserved remains of ancient life (6)FOSSIL
- 10 Across: Pure substance on periodic table (7)ELEMENT
- 11 Across: Center of an atom or cell (7)NUCLEUS
- 12 Across: Slow-moving river of ice (7)GLACIER
- 1 Down: Mixture producing intense heat (7)THERMIT
- 2 Down: Biological catalyst for reactions (6)ENZYME
- 3 Down: Substance providing immunity (7)VACCINE
- 5 Down: Wearing away of land by water or wind (7)EROSION
- 6 Down: Diffusion of water through a membrane (7)OSMOSIS
- 7 Down: Large molecule essential for life (7)PROTEIN
- 9 Down: Device for controlled nuclear reactions (7)REACTOR
🔬 Science Crossword #5
| 1 | ||||||||||||||
| 2 | ||||||||||||||
| 3 | ||||||||||||||
| 4 | 5 | |||||||||||||
| 6 | ||||||||||||||
| 7 | ||||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
Across
- 2. Mixture producing intense heat
- 3. Pure substance on periodic table
- 6. One body blocking another in space
- 8. Positively charged particle
- 9. Smallest discrete unit of energy
- 10. Large molecule essential for life
Down
- 1. Naturally occurring inorganic solid
- 4. Device for controlled nuclear reactions
- 5. Fourth state of matter
- 6. Wearing away of land by water or wind
- 7. Group of similar living organisms
Show answers
- 2 Across: Mixture producing intense heat (7)THERMIT
- 3 Across: Pure substance on periodic table (7)ELEMENT
- 6 Across: One body blocking another in space (7)ECLIPSE
- 8 Across: Positively charged particle (6)PROTON
- 9 Across: Smallest discrete unit of energy (7)QUANTUM
- 10 Across: Large molecule essential for life (7)PROTEIN
- 1 Down: Naturally occurring inorganic solid (7)MINERAL
- 4 Down: Device for controlled nuclear reactions (7)REACTOR
- 5 Down: Fourth state of matter (6)PLASMA
- 6 Down: Wearing away of land by water or wind (7)EROSION
- 7 Down: Group of similar living organisms (7)SPECIES
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.