Across
- 4. energy, a form of energy created by motion.
- 6. composed of more than one element, ingredient or part.
- 8. the process, act or result of changing place or position.
- 9. of rocks, formed from sediments deposited by water or air.
- 11. water that falls from the sky to the ground as rain, snow, sleet or hail.
- 13. a measurement of the amount of matter something has.
- 15. system, the system that provides structure and support to the body, stores minerals, creates blood cells, protects your internal organs, and helps the body move.
- 17. a part of a chromosome in a cell that controls a particular characteristic such as height or eye color. They are passed from parents to their offspring.
- 19. a large group of stars and matter held together by gravity.
- 20. system, the collection of planets and their moons, along with other celestial bodies, that orbit the sun. Also a similar system orbiting a different star.
- 23. a tropical cyclone storm that forms in the Atlantic and Northeast Pacific Oceans, bringing winds over 74 miles per hour, rain, thunder and lightning.
- 25. the curved form some types of energy, such as heat, light and sound, take as they move through space.
- 27. the movement of small pieces of rock or sediment due to wind, water, gravity and other natural forces.
- 29. an influence or power that can cause a change in an object or system.
- 30. the physical substance that everything is made of.
- 31. in the electromagnetic spectrum, the invisible waves next to violet light that have shorter wavelengths than those of violet light. This type of ray can cause suntan and sunburn.
- 32. chain, a series of living things in which each uses the one below it as a food source.
- 33. molten rock that erupts from a volcano or vent; also the solid rock that forms when this substance cools.
- 35. any audible vibration; anything that is heard.
- 36. an animal that lacks a backbone.
Down
- 1. a simple machine in which a wheel or set of wheels is used with a rope or chain to lift heavy objects.
- 2. heat or light energy sent out in the form of waves. Some forms can be dangerous.
- 3. cycle, the series of changes a living thing passes through.
- 5. to change from a gas or vapor to a liquid.
- 6. the usual weather of a certain area.
- 7. an object, such as a piece of iron or steel, that has the ability to attract certain metals. They may be naturally occurring or manufactured.
- 10. fuel, fuel that contains carbon and that is formed in the Earth over millions of years from plant and animal remains. Oil and natural gas are examples.
- 12. to arrange something into groups according to similarities.
- 14. a tiny structural unit in an organism, typically consisting of cytoplasm and organelles. In animals they are enclosed by a membrane and in plants by a cell wall.
- 16. a shaking of part of the Earth's surface.
- 18. a group of all organisms and their environment.
- 21. in biology, changes that happen over time in the gene pool of a population.
- 22. the passing on of genetic traits from parents to children or offspring.
- 24. water that falls from the sky to the ground as rain, snow, sleet or hail.
- 26. an animal that has a backbone. Mammals, birds, fish, reptiles and amphibians are all examples.
- 28. the rocky outer layer of a planet or moon; the layer of the Earth above the mantle.
- 34. the part of a plant that grows underground. They get water and holds the plant in place.