Classic Crosswords Science Hard — Set 30
🔬 Science Crossword #1
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Across
- 4. The smallest piece of matter that makes up everything
- 5. The process of making new living things
- 7. The amount of matter in an object
- 8. The remains of a plant or animal from long ago preserved in rock
- 9. A unit of information that passes traits from parents to children
Down
- 1. When water changes from a liquid to a gas
- 2. The natural home of an animal or plant
- 3. A tool that makes very tiny things look bigger
- 5. When light bounces off a surface like a mirror
- 6. A state of matter that spreads to fill any space
Show answers
- 4 Across: The smallest piece of matter that makes up everything (4)ATOM
- 5 Across: The process of making new living things (12)REPRODUCTION
- 7 Across: The amount of matter in an object (4)MASS
- 8 Across: The remains of a plant or animal from long ago preserved in rock (6)FOSSIL
- 9 Across: A unit of information that passes traits from parents to children (4)GENE
- 1 Down: When water changes from a liquid to a gas (11)EVAPORATION
- 2 Down: The natural home of an animal or plant (7)HABITAT
- 3 Down: A tool that makes very tiny things look bigger (10)MICROSCOPE
- 5 Down: When light bounces off a surface like a mirror (10)REFLECTION
- 6 Down: A state of matter that spreads to fill any space (3)GAS
🔬 Science Crossword #2
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Across
- 3. A tool that makes very tiny things look bigger
- 6. A test done to discover something new
- 7. When a solid mixes into a liquid and seems to disappear
- 8. An object that attracts iron and some other metals
Down
- 1. A state of matter that spreads to fill any space
- 2. An educated guess about what will happen in an experiment
- 3. The amount of matter in an object
- 4. Two or more substances mixed together but not chemically joined
- 5. The force that slows things down when they rub together
Show answers
- 3 Across: A tool that makes very tiny things look bigger (10)MICROSCOPE
- 6 Across: A test done to discover something new (10)EXPERIMENT
- 7 Across: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 8 Across: An object that attracts iron and some other metals (6)MAGNET
- 1 Down: A state of matter that spreads to fill any space (3)GAS
- 2 Down: An educated guess about what will happen in an experiment (10)HYPOTHESIS
- 3 Down: The amount of matter in an object (4)MASS
- 4 Down: Two or more substances mixed together but not chemically joined (7)MIXTURE
- 5 Down: The force that slows things down when they rub together (8)FRICTION
🔬 Science Crossword #3
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Across
- 4. A pattern of energy moving through space or matter
- 6. Related to the large plates that make up Earth's surface
- 7. How often something happens in a given time
- 8. A gas in the air that living things need to breathe
Down
- 1. A tool that makes very tiny things look bigger
- 2. Two or more atoms joined together
- 3. A sample of something used for study
- 5. A quick back-and-forth movement
Show answers
- 4 Across: A pattern of energy moving through space or matter (4)WAVE
- 6 Across: Related to the large plates that make up Earth's surface (8)TECTONIC
- 7 Across: How often something happens in a given time (9)FREQUENCY
- 8 Across: A gas in the air that living things need to breathe (6)OXYGEN
- 1 Down: A tool that makes very tiny things look bigger (10)MICROSCOPE
- 2 Down: Two or more atoms joined together (8)MOLECULE
- 3 Down: A sample of something used for study (8)SPECIMEN
- 5 Down: A quick back-and-forth movement (9)VIBRATION
🔬 Science Crossword #4
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Across
- 5. The bending of light as it passes from one material to another
- 6. A curved piece of glass that bends light
- 8. Anything that takes up space and has weight
- 9. The slow process of living things changing over many years
Down
- 1. The force that makes magnets attract or repel
- 2. A natural solid substance found in the earth
- 3. The process of making new living things
- 4. A mountain with an opening that can erupt hot lava
- 7. A pure substance made of only one type of atom
Show answers
- 5 Across: The bending of light as it passes from one material to another (10)REFRACTION
- 6 Across: A curved piece of glass that bends light (4)LENS
- 8 Across: Anything that takes up space and has weight (6)MATTER
- 9 Across: The slow process of living things changing over many years (9)EVOLUTION
- 1 Down: The force that makes magnets attract or repel (9)MAGNETISM
- 2 Down: A natural solid substance found in the earth (7)MINERAL
- 3 Down: The process of making new living things (12)REPRODUCTION
- 4 Down: A mountain with an opening that can erupt hot lava (7)VOLCANO
- 7 Down: A pure substance made of only one type of atom (7)ELEMENT
🔬 Science Crossword #5
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Across
- 1. A material that electricity or heat can pass through easily
- 4. The amount of matter in an object
- 6. The wearing away of land by water, wind, or ice
- 7. All the chemical processes in your body that keep you alive
- 8. A community of living things and their environment working together
Down
- 2. A substance made of two or more elements bonded together
- 3. A push or pull that can change how something moves
- 5. The slow process of living things changing over many years
Show answers
- 1 Across: A material that electricity or heat can pass through easily (9)CONDUCTOR
- 4 Across: The amount of matter in an object (4)MASS
- 6 Across: The wearing away of land by water, wind, or ice (7)EROSION
- 7 Across: All the chemical processes in your body that keep you alive (10)METABOLISM
- 8 Across: A community of living things and their environment working together (9)ECOSYSTEM
- 2 Down: A substance made of two or more elements bonded together (8)COMPOUND
- 3 Down: A push or pull that can change how something moves (5)FORCE
- 5 Down: The slow process of living things changing over many years (9)EVOLUTION
Solver Notes
Enjoy our collection of classic crossword puzzles featuring traditional grid layouts and a wide range of topics. Each puzzle is free to download, print, and solve at your own pace.
What are classic crossword puzzles?
Classic crossword puzzles use a traditional symmetric grid where solvers fill in words based on numbered clues. Each puzzle features interlocking horizontal and vertical answers that share common letters, creating an engaging word challenge.
How do I solve a classic crossword puzzle?
Start with the clues you know for certain and fill in those answers first. Use the crossing letters to help you figure out harder clues. Work through the across and down clues systematically, and don't be afraid to use a pencil so you can erase.
Who are classic crosswords best suited for?
Classic crossword puzzles are ideal for adults and older students who enjoy vocabulary challenges and general knowledge trivia. They work well for solo relaxation, classroom activities, or group puzzle-solving sessions.
How many classic crossword puzzles are available?
Our library includes dozens of classic crossword puzzles spanning topics like general knowledge, geography, history, and sports. New puzzles are added regularly so you always have fresh challenges to print and solve.
What is the difference between classic and quick crosswords?
Classic crossword puzzles use larger grids with more complex clues and require broader vocabulary knowledge. Quick crosswords feature smaller grids and simpler clues, making them faster to complete and more accessible for beginners.