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