Classic Crosswords Classic Science Hard — Set 30
Puzzle Set
5 puzzles in this set
🔬 Science Crossword #1
13×13 grid
Across
- 3 A hard solid piece of the Earth made of minerals
- 4 A state of matter that spreads to fill any space
- 6 An educated guess about what will happen in an experiment
- 7 Vibrations that travel through the air and are heard by ears
- 8 The molecule inside cells that carries instructions for life
Down
- 1 The amount of matter in an object
- 2 A mixture where one substance dissolves completely in another
- 4 The process of getting bigger or more developed
- 5 A tiny particle of light energy
Answers
- 3 Across: A hard solid piece of the Earth made of minerals (4)ROCK
- 4 Across: A state of matter that spreads to fill any space (3)GAS
- 6 Across: An educated guess about what will happen in an experiment (10)HYPOTHESIS
- 7 Across: Vibrations that travel through the air and are heard by ears (5)SOUND
- 8 Across: The molecule inside cells that carries instructions for life (3)DNA
- 1 Down: The amount of matter in an object (4)MASS
- 2 Down: A mixture where one substance dissolves completely in another (8)SOLUTION
- 4 Down: The process of getting bigger or more developed (6)GROWTH
- 5 Down: A tiny particle of light energy (6)PHOTON
🔬 Science Crossword #2
13×13 grid
Across
- 2 When a solid mixes into a liquid and seems to disappear
- 5 A state of matter that holds its shape
- 6 A tool that makes very tiny things look bigger
- 7 A community of living things and their environment working together
- 8 A tool for measuring temperature
Down
- 1 All the chemical processes in your body that keep you alive
- 3 The invisible force that pulls things toward the Earth
- 4 A final decision reached after studying results
Answers
- 2 Across: When a solid mixes into a liquid and seems to disappear (8)DISSOLVE
- 5 Across: A state of matter that holds its shape (5)SOLID
- 6 Across: A tool that makes very tiny things look bigger (10)MICROSCOPE
- 7 Across: A community of living things and their environment working together (9)ECOSYSTEM
- 8 Across: A tool for measuring temperature (11)THERMOMETER
- 1 Down: All the chemical processes in your body that keep you alive (10)METABOLISM
- 3 Down: The invisible force that pulls things toward the Earth (7)GRAVITY
- 4 Down: A final decision reached after studying results (10)CONCLUSION
🔬 Science Crossword #3
13×13 grid
Across
- 1 A path that electricity travels along
- 6 A pattern of energy moving through space or matter
- 7 The distance between one wave peak and the next
- 8 To study something carefully to understand it
Down
- 2 A substance made of two or more elements bonded together
- 3 Carefully watching and noting what happens
- 4 When light bounces off a surface like a mirror
- 5 A tiny particle of light energy
Answers
- 1 Across: A path that electricity travels along (7)CIRCUIT
- 6 Across: A pattern of energy moving through space or matter (4)WAVE
- 7 Across: The distance between one wave peak and the next (10)WAVELENGTH
- 8 Across: To study something carefully to understand it (7)ANALYZE
- 2 Down: A substance made of two or more elements bonded together (8)COMPOUND
- 3 Down: Carefully watching and noting what happens (11)OBSERVATION
- 4 Down: When light bounces off a surface like a mirror (10)REFLECTION
- 5 Down: A tiny particle of light energy (6)PHOTON
🔬 Science Crossword #4
13×13 grid
Across
- 1 A natural solid substance found in the earth
- 4 Something in an experiment that can be changed or measured
- 7 A tool that makes very tiny things look bigger
- 8 All the chemical processes in your body that keep you alive
Down
- 2 To study something carefully to understand it
- 3 How tightly packed the matter is in something
- 5 When one substance soaks up or takes in another
- 6 Vibrations that travel through the air and are heard by ears
Answers
- 1 Across: A natural solid substance found in the earth (7)MINERAL
- 4 Across: Something in an experiment that can be changed or measured (8)VARIABLE
- 7 Across: A tool that makes very tiny things look bigger (10)MICROSCOPE
- 8 Across: All the chemical processes in your body that keep you alive (10)METABOLISM
- 2 Down: To study something carefully to understand it (7)ANALYZE
- 3 Down: How tightly packed the matter is in something (7)DENSITY
- 5 Down: When one substance soaks up or takes in another (10)ABSORPTION
- 6 Down: Vibrations that travel through the air and are heard by ears (5)SOUND
🔬 Science Crossword #5
13×13 grid
Across
- 4 A tool that makes far-away things look closer
- 6 Vibrations that travel through the air and are heard by ears
- 8 How tightly packed the matter is in something
Down
- 1 A natural solid substance found in the earth
- 2 A pattern of energy moving through space or matter
- 3 A state of matter that spreads to fill any space
- 5 To say what you think will happen based on evidence
- 7 A gas in the air that living things need to breathe
Answers
- 4 Across: A tool that makes far-away things look closer (9)TELESCOPE
- 6 Across: Vibrations that travel through the air and are heard by ears (5)SOUND
- 8 Across: How tightly packed the matter is in something (7)DENSITY
- 1 Down: A natural solid substance found in the earth (7)MINERAL
- 2 Down: A pattern of energy moving through space or matter (4)WAVE
- 3 Down: A state of matter that spreads to fill any space (3)GAS
- 5 Down: To say what you think will happen based on evidence (7)PREDICT
- 7 Down: A gas in the air that living things need to breathe (6)OXYGEN
Solver Notes
- 3. A hard solid piece of the Earth made of minerals
- 4. A state of matter that spreads to fill any space
- 6. An educated guess about what will happen in an experiment
- 7. Vibrations that travel through the air and are heard by ears
- 8. The molecule inside cells that carries instructions for life
- 1. The amount of matter in an object
- 2. A mixture where one substance dissolves completely in another
- 4. The process of getting bigger or more developed
- 5. A tiny particle of light energy
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.
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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.
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