Challenge Crosswords Nature Expert — Set 8
🔬 Science Crossword #1
| 1 | ||||||||||||||
| 2 | ||||||||||||||
| 3 | 4 | |||||||||||||
| 5 | 6 | |||||||||||||
| 7 | ||||||||||||||
| 8 | 9 | |||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
| 12 | ||||||||||||||
Across
- 4. Preserved remains of ancient life
- 8. Large molecule essential for life
- 10. Naturally occurring inorganic solid
- 11. Diffusion of water through a membrane
- 12. Biological catalyst for reactions
Down
- 1. Substance providing immunity
- 2. Positively charged particle
- 3. Smallest discrete unit of energy
- 5. Device for controlled nuclear reactions
- 6. Group of similar living organisms
- 7. Force attracting objects to Earth
- 9. Fourth state of matter
Show answers
- 4 Across: Preserved remains of ancient life (6)FOSSIL
- 8 Across: Large molecule essential for life (7)PROTEIN
- 10 Across: Naturally occurring inorganic solid (7)MINERAL
- 11 Across: Diffusion of water through a membrane (7)OSMOSIS
- 12 Across: Biological catalyst for reactions (6)ENZYME
- 1 Down: Substance providing immunity (7)VACCINE
- 2 Down: Positively charged particle (6)PROTON
- 3 Down: Smallest discrete unit of energy (7)QUANTUM
- 5 Down: Device for controlled nuclear reactions (7)REACTOR
- 6 Down: Group of similar living organisms (7)SPECIES
- 7 Down: Force attracting objects to Earth (7)GRAVITY
- 9 Down: Fourth state of matter (6)PLASMA
🔬 Science Crossword #2
| 1 | 2 | |||||||||||||
| 3 | 4 | |||||||||||||
| 5 | 6 | |||||||||||||
| 7 | ||||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
Across
- 1. Diffusion of water through a membrane
- 5. One body blocking another in space
- 8. Mixture producing intense heat
- 9. Uncharged particle in nucleus
- 10. Smallest discrete unit of energy
Down
- 2. Group of similar living organisms
- 3. Solid with ordered atomic structure
- 4. Device for controlled nuclear reactions
- 6. Substance providing immunity
- 7. Naturally occurring inorganic solid
Show answers
- 1 Across: Diffusion of water through a membrane (7)OSMOSIS
- 5 Across: One body blocking another in space (7)ECLIPSE
- 8 Across: Mixture producing intense heat (7)THERMIT
- 9 Across: Uncharged particle in nucleus (7)NEUTRON
- 10 Across: Smallest discrete unit of energy (7)QUANTUM
- 2 Down: Group of similar living organisms (7)SPECIES
- 3 Down: Solid with ordered atomic structure (7)CRYSTAL
- 4 Down: Device for controlled nuclear reactions (7)REACTOR
- 6 Down: Substance providing immunity (7)VACCINE
- 7 Down: Naturally occurring inorganic solid (7)MINERAL
🔬 Science Crossword #3
| 1 | 2 | 3 | ||||||||||||
| 4 | 5 | |||||||||||||
| 6 | ||||||||||||||
| 7 | ||||||||||||||
| 8 | 9 | |||||||||||||
| 10 | ||||||||||||||
Across
- 1. Solid with ordered atomic structure
- 4. Substance providing immunity
- 6. Device for controlled nuclear reactions
- 9. Preserved remains of ancient life
- 10. One body blocking another in space
Down
- 2. Mixture producing intense heat
- 3. Uncharged particle in nucleus
- 5. Force attracting objects to Earth
- 7. Diffusion of water through a membrane
- 8. Naturally occurring inorganic solid
Show answers
- 1 Across: Solid with ordered atomic structure (7)CRYSTAL
- 4 Across: Substance providing immunity (7)VACCINE
- 6 Across: Device for controlled nuclear reactions (7)REACTOR
- 9 Across: Preserved remains of ancient life (6)FOSSIL
- 10 Across: One body blocking another in space (7)ECLIPSE
- 2 Down: Mixture producing intense heat (7)THERMIT
- 3 Down: Uncharged particle in nucleus (7)NEUTRON
- 5 Down: Force attracting objects to Earth (7)GRAVITY
- 7 Down: Diffusion of water through a membrane (7)OSMOSIS
- 8 Down: Naturally occurring inorganic solid (7)MINERAL
🔬 Science Crossword #4
| 1 | ||||||||||||||
| 2 | ||||||||||||||
| 3 | 4 | |||||||||||||
| 5 | ||||||||||||||
| 6 | 7 | |||||||||||||
| 8 | ||||||||||||||
| 9 | ||||||||||||||
| 10 | ||||||||||||||
| 11 | ||||||||||||||
Across
- 4. Large molecule essential for life
- 6. Substance providing immunity
- 9. Uncharged particle in nucleus
- 10. Solid with ordered atomic structure
- 11. Slow-moving river of ice
Down
- 1. Naturally occurring inorganic solid
- 2. Preserved remains of ancient life
- 3. Force attracting objects to Earth
- 5. Smallest discrete unit of energy
- 7. Biological catalyst for reactions
- 8. One body blocking another in space
Show answers
- 4 Across: Large molecule essential for life (7)PROTEIN
- 6 Across: Substance providing immunity (7)VACCINE
- 9 Across: Uncharged particle in nucleus (7)NEUTRON
- 10 Across: Solid with ordered atomic structure (7)CRYSTAL
- 11 Across: Slow-moving river of ice (7)GLACIER
- 1 Down: Naturally occurring inorganic solid (7)MINERAL
- 2 Down: Preserved remains of ancient life (6)FOSSIL
- 3 Down: Force attracting objects to Earth (7)GRAVITY
- 5 Down: Smallest discrete unit of energy (7)QUANTUM
- 7 Down: Biological catalyst for reactions (6)ENZYME
- 8 Down: One body blocking another in space (7)ECLIPSE
🔬 Science Crossword #5
| 1 | 2 | |||||||||||||
| 3 | ||||||||||||||
| 4 | 5 | |||||||||||||
| 6 | 7 | |||||||||||||
| 8 | 9 | 10 | 11 | |||||||||||
| 12 | ||||||||||||||
| 13 | ||||||||||||||
| 14 | ||||||||||||||
Across
- 1. Uncharged particle in nucleus
- 4. Wearing away of land by water or wind
- 7. Preserved remains of ancient life
- 9. One body blocking another in space
- 12. Biological catalyst for reactions
- 13. Center of an atom or cell
- 14. Large molecule essential for life
Down
- 2. Pure substance on periodic table
- 3. Substance providing immunity
- 5. Diffusion of water through a membrane
- 6. Mixture producing intense heat
- 8. Naturally occurring inorganic solid
- 10. Group of similar living organisms
- 11. Solid with ordered atomic structure
Show answers
- 1 Across: Uncharged particle in nucleus (7)NEUTRON
- 4 Across: Wearing away of land by water or wind (7)EROSION
- 7 Across: Preserved remains of ancient life (6)FOSSIL
- 9 Across: One body blocking another in space (7)ECLIPSE
- 12 Across: Biological catalyst for reactions (6)ENZYME
- 13 Across: Center of an atom or cell (7)NUCLEUS
- 14 Across: Large molecule essential for life (7)PROTEIN
- 2 Down: Pure substance on periodic table (7)ELEMENT
- 3 Down: Substance providing immunity (7)VACCINE
- 5 Down: Diffusion of water through a membrane (7)OSMOSIS
- 6 Down: Mixture producing intense heat (7)THERMIT
- 8 Down: Naturally occurring inorganic solid (7)MINERAL
- 10 Down: Group of similar living organisms (7)SPECIES
- 11 Down: Solid with ordered atomic structure (7)CRYSTAL
Solver Notes
- 4. Preserved remains of ancient life
- 8. Large molecule essential for life
- 10. Naturally occurring inorganic solid
- 11. Diffusion of water through a membrane
- 12. Biological catalyst for reactions
- 1. Substance providing immunity
- 2. Positively charged particle
- 3. Smallest discrete unit of energy
- 5. Device for controlled nuclear reactions
- 6. Group of similar living organisms
- 7. Force attracting objects to Earth
- 9. Fourth state of matter
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.