Classic Crosswords Classic Nature Hard — Set 21
🔬 Science Crossword #1
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Across
- 6. The rate at which something speeds up
- 7. A mountain with an opening that can erupt hot lava
- 8. To find the size, amount, or degree of something
Down
- 1. The tendency of an object to stay still or keep moving
- 2. A glass building for growing plants or the warming effect on Earth
- 3. A unit of information that passes traits from parents to children
- 4. A natural solid substance found in the earth
- 5. When a solid mixes into a liquid and seems to disappear
Show answers
- 6 Across: The rate at which something speeds up (12)ACCELERATION
- 7 Across: A mountain with an opening that can erupt hot lava (7)VOLCANO
- 8 Across: To find the size, amount, or degree of something (7)MEASURE
- 1 Down: The tendency of an object to stay still or keep moving (7)INERTIA
- 2 Down: A glass building for growing plants or the warming effect on Earth (10)GREENHOUSE
- 3 Down: A unit of information that passes traits from parents to children (4)GENE
- 4 Down: A natural solid substance found in the earth (7)MINERAL
- 5 Down: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
🔬 Science Crossword #2
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Across
- 1. The upward force that makes things float in water
- 4. The band of colors formed when white light is split
- 6. A hard solid piece of the Earth made of minerals
- 8. When a solid mixes into a liquid and seems to disappear
- 9. A unit of information that passes traits from parents to children
Down
- 2. Carefully watching and noting what happens
- 3. The central part of a cell that controls its activity
- 5. A tiny particle of light energy
- 7. The tiny building block that makes up all living things
Show answers
- 1 Across: The upward force that makes things float in water (8)BUOYANCY
- 4 Across: The band of colors formed when white light is split (8)SPECTRUM
- 6 Across: A hard solid piece of the Earth made of minerals (4)ROCK
- 8 Across: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 9 Across: A unit of information that passes traits from parents to children (4)GENE
- 2 Down: Carefully watching and noting what happens (11)OBSERVATION
- 3 Down: The central part of a cell that controls its activity (7)NUCLEUS
- 5 Down: A tiny particle of light energy (6)PHOTON
- 7 Down: The tiny building block that makes up all living things (4)CELL
🔬 Science Crossword #3
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Across
- 3. The process of getting bigger or more developed
- 7. The process of making new living things
- 8. A glass building for growing plants or the warming effect on Earth
Down
- 1. The upward force that makes things float in water
- 2. A quick back-and-forth movement
- 4. The path water takes as it moves between Earth and sky
- 5. To say what you think will happen based on evidence
- 6. The molecule inside cells that carries instructions for life
Show answers
- 3 Across: The process of getting bigger or more developed (6)GROWTH
- 7 Across: The process of making new living things (12)REPRODUCTION
- 8 Across: A glass building for growing plants or the warming effect on Earth (10)GREENHOUSE
- 1 Down: The upward force that makes things float in water (8)BUOYANCY
- 2 Down: A quick back-and-forth movement (9)VIBRATION
- 4 Down: The path water takes as it moves between Earth and sky (11)WATER CYCLE
- 5 Down: To say what you think will happen based on evidence (7)PREDICT
- 6 Down: The molecule inside cells that carries instructions for life (3)DNA
🔬 Science Crossword #4
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Across
- 2. A mixture where one substance dissolves completely in another
- 3. To write down information for later use
- 5. The act of moving or changing position
- 6. A chemical change when substances interact
- 7. A pure substance made of only one type of atom
- 8. The breaking down of rocks by weather, water, and living things
Down
- 1. Small pieces of rock and soil carried by water and wind
- 2. A sample of something used for study
- 4. An educated guess about what will happen in an experiment
Show answers
- 2 Across: A mixture where one substance dissolves completely in another (8)SOLUTION
- 3 Across: To write down information for later use (6)RECORD
- 5 Across: The act of moving or changing position (6)MOTION
- 6 Across: A chemical change when substances interact (8)REACTION
- 7 Across: A pure substance made of only one type of atom (7)ELEMENT
- 8 Across: The breaking down of rocks by weather, water, and living things (10)WEATHERING
- 1 Down: Small pieces of rock and soil carried by water and wind (8)SEDIMENT
- 2 Down: A sample of something used for study (8)SPECIMEN
- 4 Down: An educated guess about what will happen in an experiment (10)HYPOTHESIS
🔬 Science Crossword #5
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Across
- 1. Two or more substances mixed together but not chemically joined
- 2. The molecule inside cells that carries instructions for life
- 3. A path that electricity travels along
- 4. A hard solid piece of the Earth made of minerals
- 5. A form of energy used to power lights and machines
Down
- 1. A natural solid substance found in the earth
- 2. Facts and information collected from experiments
- 3. The part of an experiment that stays the same for comparison
Show answers
- 1 Across: Two or more substances mixed together but not chemically joined (7)MIXTURE
- 2 Across: The molecule inside cells that carries instructions for life (3)DNA
- 3 Across: A path that electricity travels along (7)CIRCUIT
- 4 Across: A hard solid piece of the Earth made of minerals (4)ROCK
- 5 Across: A form of energy used to power lights and machines (11)ELECTRICITY
- 1 Down: A natural solid substance found in the earth (7)MINERAL
- 2 Down: Facts and information collected from experiments (4)DATA
- 3 Down: The part of an experiment that stays the same for comparison (7)CONTROL
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.