Across
- 3. An organism that kills and eats other organisms (prey).
- 6. The maximum absolute variation of any periodic function (e.g., a wave).
- 7. An organism that cannot produce its own food.
- 8. An organism that is killed and/or eaten by another organism (predator).
- 9. A scientific principle based on many observations of naturally occurring events that demonstrate it to be without exception under certain stated conditions. See also theory.
- 11. rock A type of rock formed from layers of sediment.
- 17. variable A factor or condition in a scientific experiment that is purposefully kept the same.
- 19. An organism in a food chain that obtains nutrients from producers or other consumers; consumers may be herbivores or carnivores.
- 23. variable A factor, usually being measured or observed, that responds to, or depends on, another factor (test variable).
- 24. A physical property of a solid used to describe its surface.
- 28. The growth of new tissues or organs to replace those lost or damaged by injury.
- 29. A cell or organism that has two different alleles for a particular trait.
- 32. A term used to describe the certainty of data or results of an investigation or experiment.
- 33. species A species that no longer exists.
- 34. An animal that obtains nutrients from eating other animals.
- 36. rock A type of rock that is formed over time from existing rock due to extreme pressure and/or heat.
- 37. (scientific theory of evolution) A cumulative change in the characteristics of organisms or populations over time from generation to generation.
- 39. chain A diagram representing the transfer of energy from the Sun through producers and a series of consumers.
- 40. A statement that tells what an investigation showed, based on observations and data.
- 41. Multiple sets of measurements or observations in a scientific investigation.
- 43. An organism that obtains nutrients from both plants and animals.
- 44. An explanation for some naturally occurring event developed from extensive observations, experimentation, and reasoning.
- 45. All members of the same species living together at the same time in the same area.
- 46. Populations of different species of organisms living together in the same geographic area
- 47. The process of making more organisms of the same kind.
Down
- 1. A characteristic of an organism that increases its chances of survival in its environment.
- 2. A type of cell or organism that has identical rather than different alleles for a particular trait.
- 4. Making multiple sets of measurements or observations in a scientific investigation.
- 5. To bounce light, sound, or heat off of a surface.
- 8. An organism that produces its own food.
- 10. The process by which rocks and other surfaces are broken down.
- 12. Any of two or more alternate forms of a gene that an organism may have for a particular trait.
- 13. A feature, quality, property, or trait of an object or organism.
- 14. The form of a trait that is expressed or shown when the combination of alleles for this trait is heterozygous.
- 15. An organism that can produce food from inorganic materials (e.g., carbon dioxide, sunlight, water).
- 16. A living thing.
- 18. variable (independent variable) The variable manipulated by the experimenter in order to study changes in the outcome variable.
- 20. point The temperature at which a solid changes to a liquid.
- 21. The reproduction of a scientific investigation by another person to ensure accuracy.
- 22. An animal that obtains nutrients only from plants.
- 25. A crack in Earth's crust along which movement has occurred.
- 26. energy A type of energy an object has due to its motion or position.
- 27. trait A trait or characteristic that is passed from parent to offspring.
- 29. A statement that can be tested scientifically through experiments and/or other scientific investigations.
- 30. A term used to describe a material that cannot be clearly seen through but that allows some light to pass through it.
- 31. A term used to describe a material that absorbs and/or reflects light and does not allow light to pass through.
- 35. The loose top layer of Earth's surface made of weathered rock and organic matter.
- 38. A measure of how hot or cold a substance is; a measure of the average kinetic energy of the particles of a substance.
- 42. The form of a trait that will be masked unless the organism is homozygous for this trait.