Across
- 3. The ability to do work or cause change. Energy exists in different forms, such as light, heat, sound, and kinetic (motion) energy. It can be transformed from one form to another.
- 6. Vibrations that travel through the air or other mediums and can be heard by the human ear. Sound is produced by objects that create waves of pressure, which are detected as sound waves.
- 7. The act of watching or noticing something carefully. Observations involve using the senses to gather information and make conclusions based on what is seen, heard, smelled, or felt.
- 9. The condition of the atmosphere at a specific place and time. Weather includes factors such as temperature, humidity, wind speed, and precipitation.
- 11. The force that pulls objects toward each other. Gravity is what keeps us grounded on Earth and governs the motion of celestial bodies in space.
- 12. A community of living organisms and their physical environment, interacting together as a system. Ecosystems can be found in various habitats, such as forests, oceans, and deserts.
- 15. The remains or traces of ancient plants and animals preserved in rocks. Fossils provide valuable evidence about life on Earth in the past and help scientists understand Earth's history.
- 16. A test or investigation conducted to gather information and answer questions. In an experiment, different variables are manipulated and observed to understand how they affect the outcome.
Down
- 1. An educated guess or prediction based on prior knowledge or observations. A hypothesis is a proposed explanation that can be tested through further investigation.
- 2. A scientific instrument used to magnify and observe tiny objects or organisms that are not visible to the naked eye. Microscopes help scientists study the details and structures of microscopic specimens.
- 4. Deoxyribonucleic acid, a molecule that contains genetic instructions for the development and functioning of living organisms. DNA carries the hereditary information passed from parents to offspring.
- 5. Energy Energy derived from the sun's radiation. Solar energy can be harnessed through technologies like solar panels to generate electricity or heat water.
- 8. A push or pull that can cause an object to move, stop, or change direction. Forces can be strong or weak and act in different directions. Examples of forces include gravity, magnetism, and friction.
- 10. Cycle The stages of growth and development that an organism goes through from birth or hatching to reproduction and death. Life cycles vary among different species and can include stages like infancy, adolescence, and adulthood.
- 13. System The system of planets, moons, asteroids, and comets that orbit around the sun. The sun is at the center of the solar system, and each planet has its own unique characteristics.
- 14. An object that produces a magnetic field and can attract certain materials, such as iron or steel. Magnets have two poles, a north pole and a south pole, which repel or attract each other.