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01. When an object’s distance from another object is changing, it is in ___.

01. When an object’s distance from another object is changing, it is in ___. MOTION. 02. As Earth orbits the sun, it is moving about ___ kilometers per ___. 30; SECOND. 03. A place or object used for comparison to determine if something is in motion is called a(n) ___. REFERENCE POINT.

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01. When an object’s distance from another object is changing, it is in ___.

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  1. 01. When an object’s distance from another object is changing, it is in ___.

  2. MOTION

  3. 02. As Earth orbits the sun, it is moving about ___ kilometers per ___.

  4. 30; SECOND

  5. 03. A place or object used for comparison to determine if something is in motion is called a(n) ___.

  6. REFERENCE POINT

  7. 04. Liters, meters, and grams are all ___.

  8. SI UNITS OF MEASUREMENT

  9. 05. The basic SI unit of length is the ___.

  10. METER

  11. 06. The International System of Units is used ___ over the world.

  12. ALL

  13. 07. If you know the distance an object has traveled in a certain amount of time, you can determine the ___ of the object.

  14. SPEED

  15. 08. Speed equals distance divided by ___.

  16. TIME

  17. 09. If the speed of an object does NOT change, the object is traveling at a(n) ___ speed.

  18. CONSTANT

  19. 10. If a bicyclist travels 30 kilometers in two hours, her average speed is ___.

  20. 15 KMH

  21. 11. If an object moves in the same ___ and at a constant speed for 4 hours, the object’s velocity did not change.

  22. DIRECTION

  23. 12. If you know a car traveled 300 kilometers in 3 hours, you can find its ___ speed.

  24. AVERAGE

  25. 13. A train that travels 100 kilometers in 4 hours is traveling at what average speed?

  26. 25 KMH

  27. 14. When you know both the speed and the direction of an object’s motion, you know the ___ of the object.

  28. VELOCITY

  29. 15. You can show the motion of an object on a line graph in which you plot distance against ___.

  30. TIME

  31. 16. In graphing motion, the ___ of the slope depends on how quickly or slowly the object is moving.

  32. STEEPNESS

  33. 17. On a graph showing distance versus time, a ___ line represents an object that is not moving at all.

  34. HORIZONTAL

  35. 18. The upper layer of Earth consists of more than a dozen major pieces called ___.

  36. PLATES

  37. 19. According to the theory of plate ___, Earth’s plates move ever so slowly.

  38. TECTONICS

  39. 20. Scientists believe that Earth’s continents were connected as recently as ___ million years ago.

  40. 250

  41. 21. If one of Earth’s plates moves 5 centimeters every year, how many meters will it move in 500 years?

  42. 25 METERS

  43. 22. In a conversion factor, the denominator and numerator are ___.

  44. EQUAL

  45. 23. It is rare for any motion to stay the ___ for very long.

  46. SAME

  47. 24. The rate at which velocity changes is called ___.

  48. ACCELERATION

  49. 25. Changing direction is an example of a kind of ___.

  50. ACCELERATION

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