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