Across
- 4. A tentative explanation or educated guess that can be tested through experimentation or observation.
- 6. The act of using your senses to gather information about the world or a specific phenomenon.
- 8. System A system of celestial bodies, including the Sun, planets, moons, asteroids, and comets, that revolve around the Sun.
- 10. The speed of an object in a particular direction.
- 13. The partial or total blocking of one celestial body by another, such as a solar or lunar eclipse.
- 14. Energy The energy an object possesses due to its position or state.
- 15. The process by which species change over time through the accumulation of genetic variations.
- 20. The flow of electric charge, typically through conductors like wires.
- 21. Anything that has mass and takes up space.
- 24. The transfer of energy in the form of electromagnetic waves, such as heat from the Sun.
- 25. The force that attracts two objects with mass towards each other.
- 26. A molecule that carries genetic information in all living organisms.
- 27. Reaction A process in which substances transform into new substances with different properties.
- 30. The transfer of heat through direct contact between particles or objects.
Down
- 1. The process by which plants and some other organisms convert light energy into chemical energy (sugar) through the synthesis of organic compounds.
- 2. A controlled test or investigation conducted to collect data and test a hypothesis.
- 3. A well-substantiated explanation or model that is supported by a substantial body of evidence and scientific consensus.
- 5. The transfer of heat through the movement of fluids (liquids or gases).
- 7. The mass of an object per unit volume; often expressed in g/cm³ or kg/m³.
- 9. The smallest unit of a chemical compound consisting of two or more atoms bonded together.
- 11. The capacity to do work or cause change, often occurring in various forms such as kinetic, potential, thermal, and chemical energy.
- 12. A pure substance that cannot be broken down into simpler substances through chemical reactions.
- 16. Method A systematic approach used by scientists to investigate natural phenomena, involving steps such as observation, hypothesis formulation, experimentation, data collection, and analysis.
- 17. A community of living organisms and their physical environment, interacting as a system.
- 18. The basic unit of matter, consisting of a nucleus (protons and neutrons) and electrons orbiting the nucleus.
- 19. A substance formed by the chemical combination of two or more elements in fixed proportions.
- 22. Information or facts collected during experiments or observations that can be analyzed to draw conclusions.
- 23. Energy The energy of an object in motion.
- 28. The fundamental structural and functional unit of living organisms.
- 29. A statement or equation describing a consistent and universal relationship observed in nature.