Across
- 3. rock that forms from the cooling of molten rock at or below the surface
- 7. cell division in which the nucleus makes two copies of itself and forms two new identical cells
- 8. energy the energy an object has due to its motion
- 11. boundary boundary between tectonic plates that are colliding
- 12. a material that does not allow heat to move through it easily
- 15. boundary boundary between tectonic plates that are sliding past each other horizontally
- 19. horizontal distance between the crests or between the troughs of two adjacent waves
- 20. a relationship between two organisms in which one organism benefits and the other is unaffected
- 23. well-tested explanation that unifies a broad range of observations
- 24. the transfer of thermal energy between objects that are not touching
- 28. the law stating that the older layers are deposited first and are therefore at the bottom
- 30. inherited characteristic that increases an organism's chance of survival
- 32. allele gene that codes for a hidden trait
- 34. the transfer of thermal energy through circular currents in a fluid
- 36. rocks that undergo a physical change due to extreme heat and pressure
- 37. reproduction a reproductive process that involves only one parent and produces offspring that are identical to the parent.
- 39. resource something produced in nature more slowly than it is consumed by humans
- 40. transformation a change from one form of energy to another
Down
- 1. preserved remains or traces of an organism that lived in the past
- 2. selection a natural process resulting in the survival and evolution of organisms best adapted to the environment.
- 4. evidence evidence that comes from direct experience, scientifically gathered data, or experimentation
- 5. the number of complete wavelengths that pass a point in a given time
- 6. a testable prediction, often implied by a theory
- 7. cell division that produces reproductive cells in sexually reproducing organisms
- 9. the bending of a wave as it passes at an angle from one medium to another
- 10. the process of being broken down by wind, water, or other natural agents.
- 13. allele gene that codes for a trait which is always visible
- 14. a relationship between two organisms of different species where one benefits and the other is harmed
- 16. rock formed when bits of other rock and materials are pressed and cemented together
- 17. the height of a wave's crest measured from resting position
- 18. the bouncing back of a wave when it hits a surface through which it cannot pass.
- 21. a relationship between two species in which both species benefit
- 22. factor an environmental factor that prevents a population from increasing
- 25. variable experimental factor that is manipulated; the variable whose effect is being studied.
- 26. variable the variable that is measured in an experiment
- 27. the transfer of thermal energy between objects that are touching
- 29. energy stored energy that results from the position or shape of an object
- 31. resource something produced in nature more rapidly than it is consumed by humans
- 33. reproduction a reproductive process that involves two parents that produce a new organism which differs from both parents
- 35. boundary boundary between two tectonic plates that are moving away from each other
- 38. a descriptive statement or equation that reliably predicts events under certain conditions