Across
- 4. a change from one state (solid or liquid or gas) to another without a change in chemical composition
- 6. the speed of an object in a particular direction
- 7. simple machine that consists of an inclined plane wrapped in a spiral around a cylindrical post
- 8. matter that has a definite volume but no definite shape
- 9. the capacity of a physical system to do work
- 11. the maximum distance that the particles of a wave's medium vibrate from their rest position
- 13. a change that occurs when one or more substances change into entirely new substances with different properties
- 17. the energy that an object has because of the position, shape, or condition of the object
- 19. a testable idea or explanation that leads to scientific investigation
- 20. a physical environment in which phenomena occur
- 21. the smallest component of an element having the chemical properties of the element
- 22. a substance that cannot be separated or broken down into simpler substances by chemical means
- 24. the energy transferred between objects that are at different temperatures
- 26. a longitudinal wave that is caused by vibrations and that travels through a material medium
- 27. the bending of a wave as the wave passes between two substances in which the speed of the wave differs
- 29. the action that results when a force causes an object to move in the direction of the force
- 30. the process whereby heat changes something from a solid to a liquid
- 32. the law that states that energy cannot be created or destroyed but can be changed from one form to another
- 40. A state of matter with no definite shape or volume
- 44. The transfer of energy carried by light waves to particles of matter.
- 48. any pieces of information acquired through observation or experimentation
- 49. the ratio of the mass of a substance to the volume of the substance
- 50. a pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept
- 51. a force that opposes motion between two surfaces that are in contact
- 52. a wave consisting of electric and magnetic fields oscillating at right angles to eachother
- 54. a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium
- 55. a measure of the amount of matter in an object
- 56. a solid that forms from a solution during a chemical reaction
- 59. an object's change in position relative to a reference point
Down
- 1. The rate at which velocity changes over time.
- 2. the rate at which charges pass through a given point; measured in amperes
- 3. the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
- 5. a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
- 7. a circuit in which the parts are joined one after another such that the current in each part is the same
- 9. The force of attraction or repulsion on a charged particle that is due to an electric field
- 10. a force of attraction between objects that is due to their masses
- 12. a circuit in which the parts are joined in branches such that the potential difference across each part is the same.
- 14. the force of attraction or repulsion generated by moving or spinning electric charges
- 15. a property of matter that describes a substance's ability to participate in chemical reactions
- 16. the energy of an object that is due to the object's motion
- 17. a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
- 18. a system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
- 23. the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
- 25. A combination of two or more substances that are not chemically combined
- 28. a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
- 31. the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
- 33. The distance from any point on a wave to an identical point on the next wave
- 34. the transfer of thermal energy by the circulation or movement of a liquid or gas
- 35. a device that helps do work by either overcoming a force or changing the direction of the applied force
- 36. any material that attracts iron or materials containing iron
- 37. groups of two or more atoms held together by chemical bonds
- 38. a push or pull exerted on an object
- 39. the conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure
- 41. the transfer of energy by electromagnetic waves
- 42. a simple machine that is a straight, slanted surface, which facilitates the raising of loads; a ramp
- 43. anything that has mass and takes up space
- 45. matter with a definite shape and volume
- 46. a simple machine that is made up of two inclined planes and that moves; often used for cutting
- 47. a simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects
- 49. a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening
- 53. simple machine with a rigid bar that pivots around a fulcrum
- 57. a substance made up of atoms of two or more different elements joined by chemical bonds
- 58. the highness or lowness of a sound