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Linear Motion Lingo
Honors Physical Science - Answers
United States Customary System (USCS)
dependent variable
independent variable
instantaneous acceleration
SI, metric
scientific law
frame of reference
instantaneous speed
constant acceleration
constant speed
average velocity
average speed
constant velocity
instantaneous velocity

 From the list of words above, choose the one that corresponds to the definitions below.

1. Quantities in physics, such as mass, volume, and speed which are fully described by a magnitude alone.  ______________________________

2. The horizontal axis on a graph on which the independent variable is plotted.    ______________________________

3. A vector quantity which describes the rate at which an object changes its position.  Also referred to as “speed with direction.”   ______________________________

4. A scalar quantity which refers to “how much ground an object has covered” during its motion ________________________

5. The rate at which an object changes its velocity, meaning there is a change in speed, direction, or both.       ______________________________

6. A point, assumed to be stationary, used to describe motion.    ______________________________

7. Refers to the duration of an action.   ______________________________

8.  The vertical axis on a graph on which the dependent variable is plotted.    ______________________________

9.  A scalar quantity which refers to “how fast an object is moving.”       _____________________________

10. Refers to the way position changes relative to a starting point. May be indicated by the terms: north, south, positive, negative, up, or down. _____________________________

11. A vector quantity which refers to how far out of place an object is, or the object’s change in position.  _____________________________

12.  A quantity that has magnitude and direction.   _____________________________

13.   Refers to where an object is.     _____________________________

14. The degree of exactness with which an operation is performed or a measurement stated. __________________________________

15. Freedom from mistake or error; degree of conformity of a measure to a standard or a true value ______________________________

16. The accepted measurement system of the scientific community, based on the meter, the kilogram, and the second. ______________________________

17. Standard system of measurement used in daily activities in the United States. ______________________________

18. The speed of an object at specific moment.  ______________________________

19. The factor in an experiment that the researcher chooses to vary at specific intervals; is plotted on the x-axis.

20. The total distance traveled divided by the total time of travel.  _____________________________

21. Refers to the degree of inclination or steepness of a line. _____________________________

22.  The factor whose value changes as the result of a change in the independent variable and is plotted on the y-axis.     _____________________________

23. Refers to size and is expressed as a numerical value.       _____________________________

24. Total displacement divided by the time interval. __________________________

25.  The velocity of an object at a specific moment.  _____________________________

26.  Type of motion that describes an object that is not accelerating.      _____________________________

27.  A speed that does not change, such as a steady speed.  _____________________________

28.  Acceleration of an object at a particular moment. ______________________________

29.  Type of motion that describes the steady change in velocity over time.     ______________________________

30. A simplified description of a physical system intended to capture the essential aspects of the system in a sufficiently simple form. A description or analogy used to help visualize something (as an atom) that cannot be directly observed ____________________________

31. An assumption to be tested; a statement of a problem to be solved, expressed as a question. ___________________________________

32. A plausible or scientifically acceptable general principle or body of principles offered to explain phenomena _____________________________

33. A specific measure of quantity (as of length, time, heat, or value) used as a standard of measurement. ______________________________

34. An act of recognizing and noting a fact or occurrence; often involving measurement with instruments. ______________________________

35. An operation carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law. ______________________________

36. A statement of an order or relation of phenomena that so far as is known is invariable under the given conditions. ______________________________

37. Set up and established by authority as a rule for the measure of quantity, weight, extent, value, or quality. ______________________________

38. Used to check, test, or verify experiments; usually not itself manipulated during the experiment. ______________________________

39. Something invariable or unchanging. ______________________________

40. A falling object which experiences no friction is in this type of motion. ______________________________