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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 ___.
02. As Earth orbits the sun, it is moving about ___ kilometers per ___.
03. A place or object used for comparison to determine if something is in motion is called a(n) ___.
06. The International System of Units is used ___ over the world.
07. If you know the distance an object has traveled in a certain amount of time, you can determine the ___ of the object.
09. If the speed of an object does NOT change, the object is traveling at a(n) ___ speed.
10. If a bicyclist travels 30 kilometers in two hours, her average speed is ___.
11. If an object moves in the same ___ and at a constant speed for 4 hours, the object’s velocity did not change.
12. If you know a car traveled 300 kilometers in 3 hours, you can find its ___ speed.
13. A train that travels 100 kilometers in 4 hours is traveling at what average speed?
14. When you know both the speed and the direction of an object’s motion, you know the ___ of the object.
15. You can show the motion of an object on a line graph in which you plot distance against ___.
16. In graphing motion, the ___ of the slope depends on how quickly or slowly the object is moving.
17. On a graph showing distance versus time, a ___ line represents an object that is not moving at all.
18. The upper layer of Earth consists of more than a dozen major pieces called ___.
19. According to the theory of plate ___, Earth’s plates move ever so slowly.
20. Scientists believe that Earth’s continents were connected as recently as ___ million years ago.
21. If one of Earth’s plates moves 5 centimeters every year, how many meters will it move in 500 years?
22. In a conversion factor, the denominator and numerator are ___.
23. It is rare for any motion to stay the ___ for very long.
