Across
- 4. the exactness of a measurement
- 5. the transfer of energy to a body by the application of a force that causes the body to move in the direction of the force
- 7. a factor that changes in an experiment in order to test a hypothesis
- 9. a quantity defined as the product of the mass and the velocity of an object
- 12. the distance travelled by the time interval during which the motion occurred
- 14. the quantity of heat required to raise a unit of mass of homogeneous material 1 ok or 1 oc in a specific way given constant pressure and volume
- 18. the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until and outside force acts on the object
- 20. a measure of how hot (or cold) something is; specifically; a measure of average kinetic energy of the particles in an object
- 21. a machine that transform heat into mechanical energy or work
- 22. the measure of the straight-line distance between two points
- 25. a machine made of more that one simple machine
- 28. a measure of the gravitational force exerted on an object
- 29. the ability and willingness to assess claims critically and make judgements on the basis of objective and supported reasons
- 30. a quantity that measures how much a machine multiples a force by
- 33. one of six basic machine types of machines which are the basis for all other forms of machines
- 35. the movement of matter due to differences in density that are caused by temperature variations
- 36. a summary of many experimental results and observations; a law tells how things work
- 37. the curved path that an object follows when thrown, launched, or otherwise projected near the surface of the earth; the motion of objects that are moving in two dimensions under the influence of gravity
- 39. the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite I direction to the force of gravity
- 40. a prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
- 41. the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
- 43. the motion of a body when only the force of gravity is acting on the body
- 44. the energy of a moving object due to the objects motion
- 45. a quantity, usually expressed as a percentage that measures the ratio of useful work output to work input
- 46. the change in position of an object
Down
- 1. the speed of an object in a particular direction
- 2. An instrument that measures and indicates temperature
- 3. a quantity that measures the rate at which work is done or energy is transformed
- 6. the force that resists the initiation between two surfaces that are in contact and at rest
- 8. the rate at which velocity changes over time; an objects accelerates if its speed, direction or both change
- 10. a measure of the amount of matter in an object
- 11. a material used to cool an area or object to a temperature that is lower than the temperature of the environment
- 12. a series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis and stating conclusions
- 13. a measure of the size of a body or region in three-dimensional space
- 15. the energy an object has because of position, shape or condition of the object
- 16. the vertical movement of air currents due to temperature variations
- 17. the energy transferred between object that are at different temperatures
- 19. the energy that is transferred as electromagnetic waves, such as visible light and infrared waves
- 23. the transfer of energy as heat through a material
- 24. a description of how close a measurement is to the true value of the quantity measured
- 26. object change in position relative to a reference point
- 27. a method of expressing a quantity as a number multiplied by 10 to the appropriate power
- 31. the amount of work and object can do because of the object’s kinetic and potential energy
- 32. an explanation for some phenomenon that is based on observation, experimentation, and reasoning
- 34. the temperature at which molecular energy is a minimum 0 ok on the kelvin scale or -273.16 oc on the Celsius scale
- 38. the force that opposes the movement of two surfaces that are in contact with each other and are sliding over each other
- 42. an action exerted on a body in order to change the body’s state of rest or motion; force has magnitude and direction