Classic Crosswords Classic Nature Hard — Set 30
🔬 Science Crossword #1
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Across
- 1. The upward force that makes things float in water
- 6. A hard solid piece of the Earth made of minerals
- 7. The rate at which something speeds up
- 8. Any living thing such as a plant or animal
Down
- 2. When one substance soaks up or takes in another
- 3. To say what you think will happen based on evidence
- 4. A substance that living things need for energy and growth
- 5. A pattern of energy moving through space or matter
Show answers
- 1 Across: The upward force that makes things float in water (8)BUOYANCY
- 6 Across: A hard solid piece of the Earth made of minerals (4)ROCK
- 7 Across: The rate at which something speeds up (12)ACCELERATION
- 8 Across: Any living thing such as a plant or animal (8)ORGANISM
- 2 Down: When one substance soaks up or takes in another (10)ABSORPTION
- 3 Down: To say what you think will happen based on evidence (7)PREDICT
- 4 Down: A substance that living things need for energy and growth (8)NUTRIENT
- 5 Down: A pattern of energy moving through space or matter (4)WAVE
🔬 Science Crossword #2
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Across
- 1. A tool that makes far-away things look closer
- 3. A unit of information that passes traits from parents to children
- 7. Anything that takes up space and has weight
- 8. The passing of traits from parents to their children
Down
- 2. A form of energy used to power lights and machines
- 4. The wearing away of land by water, wind, or ice
- 5. The amount of matter in an object
- 6. The smallest piece of matter that makes up everything
Show answers
- 1 Across: A tool that makes far-away things look closer (9)TELESCOPE
- 3 Across: A unit of information that passes traits from parents to children (4)GENE
- 7 Across: Anything that takes up space and has weight (6)MATTER
- 8 Across: The passing of traits from parents to their children (8)HEREDITY
- 2 Down: A form of energy used to power lights and machines (11)ELECTRICITY
- 4 Down: The wearing away of land by water, wind, or ice (7)EROSION
- 5 Down: The amount of matter in an object (4)MASS
- 6 Down: The smallest piece of matter that makes up everything (4)ATOM
🔬 Science Crossword #3
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Across
- 1. To say what you think will happen based on evidence
- 4. The passing of traits from parents to their children
- 5. The slow process of living things changing over many years
- 6. A tiny particle of light energy
- 7. A pure substance made of only one type of atom
Down
- 1. The steps followed to do an experiment
- 2. A group of living things that are the same kind
- 3. A glass building for growing plants or the warming effect on Earth
Show answers
- 1 Across: To say what you think will happen based on evidence (7)PREDICT
- 4 Across: The passing of traits from parents to their children (8)HEREDITY
- 5 Across: The slow process of living things changing over many years (9)EVOLUTION
- 6 Across: A tiny particle of light energy (6)PHOTON
- 7 Across: A pure substance made of only one type of atom (7)ELEMENT
- 1 Down: The steps followed to do an experiment (9)PROCEDURE
- 2 Down: A group of living things that are the same kind (7)SPECIES
- 3 Down: A glass building for growing plants or the warming effect on Earth (10)GREENHOUSE
🔬 Science Crossword #4
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Across
- 1. To sort things into groups based on their features
- 3. A test done to discover something new
- 4. The central part of a cell that controls its activity
- 6. A tiny particle of light energy
- 7. The tiny building block that makes up all living things
- 8. A final decision reached after studying results
Down
- 2. How often something happens in a given time
- 3. A pure substance made of only one type of atom
- 5. A mountain with an opening that can erupt hot lava
Show answers
- 1 Across: To sort things into groups based on their features (8)CLASSIFY
- 3 Across: A test done to discover something new (10)EXPERIMENT
- 4 Across: The central part of a cell that controls its activity (7)NUCLEUS
- 6 Across: A tiny particle of light energy (6)PHOTON
- 7 Across: The tiny building block that makes up all living things (4)CELL
- 8 Across: A final decision reached after studying results (10)CONCLUSION
- 2 Down: How often something happens in a given time (9)FREQUENCY
- 3 Down: A pure substance made of only one type of atom (7)ELEMENT
- 5 Down: A mountain with an opening that can erupt hot lava (7)VOLCANO
🔬 Science Crossword #5
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Across
- 1. The band of colors formed when white light is split
- 4. A form of energy used to power lights and machines
- 5. The force that slows things down when they rub together
- 6. When a solid mixes into a liquid and seems to disappear
- 8. The molecule inside cells that carries instructions for life
Down
- 2. Any water that falls from clouds such as rain, snow, or hail
- 3. An educated guess about what will happen in an experiment
- 7. A form of energy that allows us to see
Show answers
- 1 Across: The band of colors formed when white light is split (8)SPECTRUM
- 4 Across: A form of energy used to power lights and machines (11)ELECTRICITY
- 5 Across: The force that slows things down when they rub together (8)FRICTION
- 6 Across: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 8 Across: The molecule inside cells that carries instructions for life (3)DNA
- 2 Down: Any water that falls from clouds such as rain, snow, or hail (13)PRECIPITATION
- 3 Down: An educated guess about what will happen in an experiment (10)HYPOTHESIS
- 7 Down: A form of energy that allows us to see (5)LIGHT
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.