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