Across
- 1. a measure of the amount of matter in an object
- 3. Friction the force that resists the initiation between two surfaces that are in contact and at rest
- 5. Heat 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
- 9. a measure of the size of a body or region in three-dimensional space
- 10. a material used to cool an area or object to a temperature that is lower than the temperature of the environment
- 12. Machine one of six basic machine types of machines which are the basis for all other forms of machines
- 13. a quantity, usually expressed as a percentage that measures the ratio of useful work output to work input
- 16. Engine a machine that transform heat into mechanical energy or work
- 17. Energy the energy an object has because of position, shape or condition of the object
- 19. a description of how close a measurement is to the true value of the quantity measured
- 20. the change in position of an object
- 23. a factor that changes in an experiment in order to test a hypothesis
- 29. the exactness of a measurement
- 30. Machines a machine made of more that one simple machine
- 31. Fall the motion of a body when only the force of gravity is acting on the body
- 33. a quantity that measures the rate at which work is done or energy is transformed
- 35. the speed of an object in a particular direction
- 37. the movement of matter due to differences in density that are caused by temperature variations
- 39. object change in position relative to a reference point
- 40. 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
- 42. Zero the temperature at which molecular energy is a minimum 0 ok on the kelvin scale or -273.16 oc on the Celsius scale
Down
- 2. 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
- 4. Law a summary of many experimental results and observations; a law tells how things work
- 6. the rate at which velocity changes over time; an objects accelerates if its speed, direction or both change
- 7. a measure of how hot (or cold) something is; specifically; a measure of average kinetic energy of the particles in an object
- 8. an action exerted on a body in order to change the body’s state of rest or motion; force has magnitude and direction
- 11. the energy transferred between object that are at different temperatures
- 14. thinking the ability and willingness to assess claims critically and make judgements on the basis of objective and supported reasons
- 15. Conduction the transfer of energy as heat through a material
- 18. the energy that is transferred as electromagnetic waves, such as visible light and infrared waves
- 21. Figure a prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
- 22. An instrument that measures and indicates temperature
- 24. Notation a method of expressing a quantity as a number multiplied by 10 to the appropriate power
- 25. Advantage a quantity that measures how much a machine multiples a force by
- 26. the distance travelled by the time interval during which the motion occurred
- 27. a measure of the gravitational force exerted on an object
- 28. a quantity defined as the product of the mass and the velocity of an object
- 32. Motion 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
- 34. Friction the force that opposes the movement of two surfaces that are in contact with each other and are sliding over each other
- 36. Velocity 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
- 38. 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
- 41. the measure of the straight-line distance between two points