Classic Crosswords Science Hard — Set 18
🔬 Science Crossword #1
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Across
- 4. Related to the large plates that make up Earth's surface
- 6. The tiny building block that makes up all living things
- 8. A quick back-and-forth movement
Down
- 1. A sample of something used for study
- 2. Anything that takes up space and has weight
- 3. A final decision reached after studying results
- 5. To say what you think will happen based on evidence
- 7. A state of matter that spreads to fill any space
Show answers
- 4 Across: Related to the large plates that make up Earth's surface (8)TECTONIC
- 6 Across: The tiny building block that makes up all living things (4)CELL
- 8 Across: A quick back-and-forth movement (9)VIBRATION
- 1 Down: A sample of something used for study (8)SPECIMEN
- 2 Down: Anything that takes up space and has weight (6)MATTER
- 3 Down: A final decision reached after studying results (10)CONCLUSION
- 5 Down: To say what you think will happen based on evidence (7)PREDICT
- 7 Down: A state of matter that spreads to fill any space (3)GAS
🔬 Science Crossword #2
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Across
- 3. A hard solid piece of the Earth made of minerals
- 5. When a gas cools and turns back into a liquid
- 6. When light bounces off a surface like a mirror
- 7. A gas in the air that living things need to breathe
Down
- 1. A tool that makes far-away things look closer
- 2. A change in a living thing that helps it survive
- 3. A chemical change when substances interact
- 4. A push or pull that can change how something moves
Show answers
- 3 Across: A hard solid piece of the Earth made of minerals (4)ROCK
- 5 Across: When a gas cools and turns back into a liquid (12)CONDENSATION
- 6 Across: When light bounces off a surface like a mirror (10)REFLECTION
- 7 Across: A gas in the air that living things need to breathe (6)OXYGEN
- 1 Down: A tool that makes far-away things look closer (9)TELESCOPE
- 2 Down: A change in a living thing that helps it survive (10)ADAPTATION
- 3 Down: A chemical change when substances interact (8)REACTION
- 4 Down: A push or pull that can change how something moves (5)FORCE
🔬 Science Crossword #3
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Across
- 2. To find the size, amount, or degree of something
- 4. How tightly packed the matter is in something
- 5. A material that electricity or heat can pass through easily
- 6. When water changes from a liquid to a gas
- 7. The part of an experiment that stays the same for comparison
Down
- 1. A substance that living things need for energy and growth
- 3. A tool for measuring temperature
- 4. Facts and information collected from experiments
Show answers
- 2 Across: To find the size, amount, or degree of something (7)MEASURE
- 4 Across: How tightly packed the matter is in something (7)DENSITY
- 5 Across: A material that electricity or heat can pass through easily (9)CONDUCTOR
- 6 Across: When water changes from a liquid to a gas (11)EVAPORATION
- 7 Across: The part of an experiment that stays the same for comparison (7)CONTROL
- 1 Down: A substance that living things need for energy and growth (8)NUTRIENT
- 3 Down: A tool for measuring temperature (11)THERMOMETER
- 4 Down: Facts and information collected from experiments (4)DATA
🔬 Science Crossword #4
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Across
- 2. Two or more atoms joined together
- 6. The force that slows things down when they rub together
- 7. The smallest piece of matter that makes up everything
- 8. The tendency of an object to stay still or keep moving
Down
- 1. When light bounces off a surface like a mirror
- 3. A thread-like structure in cells that carries genetic information
- 4. The bending of light as it passes from one material to another
- 5. A natural solid substance found in the earth
Show answers
- 2 Across: Two or more atoms joined together (8)MOLECULE
- 6 Across: The force that slows things down when they rub together (8)FRICTION
- 7 Across: The smallest piece of matter that makes up everything (4)ATOM
- 8 Across: The tendency of an object to stay still or keep moving (7)INERTIA
- 1 Down: When light bounces off a surface like a mirror (10)REFLECTION
- 3 Down: A thread-like structure in cells that carries genetic information (10)CHROMOSOME
- 4 Down: The bending of light as it passes from one material to another (10)REFRACTION
- 5 Down: A natural solid substance found in the earth (7)MINERAL
🔬 Science Crossword #5
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Across
- 3. A push or pull that can change how something moves
- 4. A unit of information that passes traits from parents to children
- 7. A substance that living things need for energy and growth
- 8. The amount of space something takes up
Down
- 1. A community of living things and their environment working together
- 2. The bending of light as it passes from one material to another
- 5. When a solid mixes into a liquid and seems to disappear
- 6. Facts that show something is true
Show answers
- 3 Across: A push or pull that can change how something moves (5)FORCE
- 4 Across: A unit of information that passes traits from parents to children (4)GENE
- 7 Across: A substance that living things need for energy and growth (8)NUTRIENT
- 8 Across: The amount of space something takes up (6)VOLUME
- 1 Down: A community of living things and their environment working together (9)ECOSYSTEM
- 2 Down: The bending of light as it passes from one material to another (10)REFRACTION
- 5 Down: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 6 Down: Facts that show something is true (8)EVIDENCE
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.