Classic Crosswords Classic Science Hard — Set 21
🔬 Science Crossword #1
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Across
- 2. The tiny building block that makes up all living things
- 4. Vibrations that travel through the air and are heard by ears
- 6. The slow process of living things changing over many years
- 8. When water changes from a liquid to a gas
- 9. How tightly packed the matter is in something
Down
- 1. A substance made of two or more elements bonded together
- 3. A state of matter that flows and takes the shape of its container
- 4. A group of living things that are the same kind
- 5. The upward force that makes things float in water
- 7. Facts and information collected from experiments
Show answers
- 2 Across: The tiny building block that makes up all living things (4)CELL
- 4 Across: Vibrations that travel through the air and are heard by ears (5)SOUND
- 6 Across: The slow process of living things changing over many years (9)EVOLUTION
- 8 Across: When water changes from a liquid to a gas (11)EVAPORATION
- 9 Across: How tightly packed the matter is in something (7)DENSITY
- 1 Down: A substance made of two or more elements bonded together (8)COMPOUND
- 3 Down: A state of matter that flows and takes the shape of its container (6)LIQUID
- 4 Down: A group of living things that are the same kind (7)SPECIES
- 5 Down: The upward force that makes things float in water (8)BUOYANCY
- 7 Down: Facts and information collected from experiments (4)DATA
🔬 Science Crossword #2
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Across
- 1. The smallest piece of matter that makes up everything
- 3. A glass container used in science experiments
- 6. To say what you think will happen based on evidence
- 7. The act of moving or changing position
- 8. A gas in the air that living things need to breathe
Down
- 2. A tool that makes far-away things look closer
- 4. The slow process of living things changing over many years
- 5. Any living thing such as a plant or animal
Show answers
- 1 Across: The smallest piece of matter that makes up everything (4)ATOM
- 3 Across: A glass container used in science experiments (6)BEAKER
- 6 Across: To say what you think will happen based on evidence (7)PREDICT
- 7 Across: The act of moving or changing position (6)MOTION
- 8 Across: A gas in the air that living things need to breathe (6)OXYGEN
- 2 Down: A tool that makes far-away things look closer (9)TELESCOPE
- 4 Down: The slow process of living things changing over many years (9)EVOLUTION
- 5 Down: Any living thing such as a plant or animal (8)ORGANISM
🔬 Science Crossword #3
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Across
- 3. A curved piece of glass that bends light
- 7. Any water that falls from clouds such as rain, snow, or hail
- 8. A test done to discover something new
Down
- 1. To find the size, amount, or degree of something
- 2. Facts that show something is true
- 4. The band of colors formed when white light is split
- 5. A push or pull that can change how something moves
- 6. A substance that living things need for energy and growth
Show answers
- 3 Across: A curved piece of glass that bends light (4)LENS
- 7 Across: Any water that falls from clouds such as rain, snow, or hail (13)PRECIPITATION
- 8 Across: A test done to discover something new (10)EXPERIMENT
- 1 Down: To find the size, amount, or degree of something (7)MEASURE
- 2 Down: Facts that show something is true (8)EVIDENCE
- 4 Down: The band of colors formed when white light is split (8)SPECTRUM
- 5 Down: A push or pull that can change how something moves (5)FORCE
- 6 Down: A substance that living things need for energy and growth (8)NUTRIENT
🔬 Science Crossword #4
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Across
- 1. A sample of something used for study
- 4. A final decision reached after studying results
- 8. When a solid mixes into a liquid and seems to disappear
- 9. A material that does not let electricity or heat pass through easily
- 10. The power that makes things move or change
Down
- 2. Any water that falls from clouds such as rain, snow, or hail
- 3. The central part of a cell that controls its activity
- 5. A hard solid piece of the Earth made of minerals
- 6. How tightly packed the matter is in something
- 7. The band of colors formed when white light is split
Show answers
- 1 Across: A sample of something used for study (8)SPECIMEN
- 4 Across: A final decision reached after studying results (10)CONCLUSION
- 8 Across: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 9 Across: A material that does not let electricity or heat pass through easily (9)INSULATOR
- 10 Across: The power that makes things move or change (6)ENERGY
- 2 Down: Any water that falls from clouds such as rain, snow, or hail (13)PRECIPITATION
- 3 Down: The central part of a cell that controls its activity (7)NUCLEUS
- 5 Down: A hard solid piece of the Earth made of minerals (4)ROCK
- 6 Down: How tightly packed the matter is in something (7)DENSITY
- 7 Down: The band of colors formed when white light is split (8)SPECTRUM
🔬 Science Crossword #5
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Across
- 1. All the chemical processes in your body that keep you alive
- 3. The amount of space something takes up
- 6. To study something carefully to understand it
- 7. A substance made of two or more elements bonded together
- 8. Something in an experiment that can be changed or measured
- 9. The force that makes magnets attract or repel
Down
- 2. Anything that takes up space and has weight
- 4. To find the size, amount, or degree of something
- 5. The band of colors formed when white light is split
Show answers
- 1 Across: All the chemical processes in your body that keep you alive (10)METABOLISM
- 3 Across: The amount of space something takes up (6)VOLUME
- 6 Across: To study something carefully to understand it (7)ANALYZE
- 7 Across: A substance made of two or more elements bonded together (8)COMPOUND
- 8 Across: Something in an experiment that can be changed or measured (8)VARIABLE
- 9 Across: The force that makes magnets attract or repel (9)MAGNETISM
- 2 Down: Anything that takes up space and has weight (6)MATTER
- 4 Down: To find the size, amount, or degree of something (7)MEASURE
- 5 Down: The band of colors formed when white light is split (8)SPECTRUM
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.