Mr. Corner's Physical Science Final

Front 1

1. The motion of an object looks different to observers in different______________________.

Front 2

2. The SI unit for measuring ______________is the meter.

Front 3

3. The direction and length of a straight line from the starting point to the ending point of an object’s motion is __________________________.

Front 4

4. Displacement and velocity are examples of ____________ Because they have both magnitude and direction.

Front 5

5. The sum of two or more vectors is called the ___________.

Front 6

6. Speed is measured in units of ______________________.

Front 7

7. A car’s speedometer measures _____________________.

Front 8

8. V = D divided by T is the equation that defines ________________.

Front 9

9. A constant slope on a distance- time graph indicates _________________ speed.

Front 10

10. The difference between speed and velocity is the velocity indicates the ________________ of motion and speed does not.

Front 11

11. A distance-time graph indicates an object moves 20 km in 4 h. The average speed of the object is ___________km/h.

Front 12

12. Because its ___________ is always changing, an object moving in a circular path experiences a continuous change in velocity.

Front 13

13. Two or more velocities add by _____________________.

Front 14

14. A moving object does not ____________ if it velocity remains constant.

Front 15

15. Freely falling objects accelerate at 9.8 m/s squared because the force of ____________ acts on them.

Front 16

16. The velocity of an object moving in a straight line changes at a constant rate when the object is experiencing constant ____________________.

Front 17

17. The acceleration of a moving object is calculated by dividing the change in _____________by the time over which the change occurs.

Front 18

18. Acceleration motion is represented by a (an) ___________ line on distance-time graph.

Front 19

19. A car that increases it speed from 20 km/h to 100 km/h undergoes ____________ acceleration.

Front 20

20. ________________is how fast a velocity is changing at specific instant.

Front 21

21. A push or pull is an example of a (an) _______________.

Front 22

22. The type of force measured by a grocery store spring scale is ______________________.

Front 23

23. The sum of all the forces acting on an object is called the _________________________.

Front 24

24. If the forces acting on an object produce a net force of zero, the forces are called _______________________.

Front 25

25. The force that opposes the motion of object that touch as they move past each other is called _______________.

Front 26

26. It usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually____________________ than sliding friction.

Front 27

27. The two forces acting on a falling object are gravity and ________________________.

Front 28

28. When a falling object reaches terminal velocity, the net force acting on it is ________________________.

Front 29

29. The drag force acting on a falling sky diver is also known as ______________________________.

Front 30

30. The path of motion of a thrown javelin is an example of ________________________motion.

Front 31

31. The tendency of an object to resist any change in it motion is called _______________________.

Front 32

32. During a head-on auto collision, ____________ causes a passenger in the front seat to continue moving _________.

Front 33

33. The acceleration of an object is equal to the net _________ acting on the object divided by the object’s ___________.

Front 34

34. The force of gravity acting on an object is the object’s ___________________.

Front 35

35. If a golf ball and bowing ball are rolling at the same speed, the ______________________ ball has greater momentum.

Front 36

36. When you push on a wall, the ______________pushes back on you.

Front 37

37. In a closed system, the loss of momentum of one object ____________ the gain in momentum of another object.

Front 38

38. The observation that a charged object can attract or repel other charged objects led scientists to conclude that there are _________________ types of charges.

Front 39

39. The universal force that is effective over the longest distance is ____________________.

Front 40

40. The centripetal force acting on the moon continuously changes the ________________of the moon’s motion.

Front 41

41. Pressure is the result of force distributed over a (an) __________________.

Front 42

42. The formula force divided by area is used to calculate _____________.

Front 43

43. The SI unit of pressure is the ______________________.

Front 44

44. A pascal, the SI unit of pressure, is equal of 1 newton per ____________________________.

Front 45

45. A substance that flows and assumes the shape of its container is a (an) __________________________.

Front 46

46. As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom of the beaker ______________.

Front 47

47. The pressure exerted by a fluid at any given depth is exerted _______________________ in all directions.

Front 48

48. As your altitude increased, air pressure _______________.

Front 49

49. A hydraulic jack is an application of _________ principle.

Front 50

50. A device that uses pressurized fluids acting on pistons of different sizes to change a force is called a (an) _________.

Front 51

51. As the speed of a fluid increased, the __________ within the fluid decreases.

Front 52

52. In a hydraulic lift system, the fluid pressure exerted throughout the system is _____________________.

Front 53

53. The downward force produced when air flows over the wing like spoiler on a race car is an example of ______________________________ principle.

Front 54

54. The apparent loss of weight of an object in a fluid is called _____________________________.

Front 55

55. The direction of the buoyant force on an object placed in a fluid is ___________________________.

Front 56

56. Even a rock at the bottom of a lake has a (an) __________ Force acting upward on it.

Front 57

57. The unit f/cm3 is often used to express _______________.

Front 58

58. As you climb a high mountain, the buoyant force exerted on you by the atmosphere ______________________.

Front 59

59. A submerged submarine alters its _________________ To rise or fall in the water.

Front 60

60. The weight of an object that sinks in a fluid is _______ _________________ than the buoyant force acting on it.

Front 61

61. For work to be done on the object, the object has to ___________________________.

Front 62

62. Any part of a force that does not act in the direction of an object’s motion does not ________________ on an object.

Front 63

63. The SI unit of work is the _________________________.

Front 64

64. You calculate work by multiplying the force acting in the direction of ______________by the distance the object moves.

Front 65

65. The rate at which work is done is called ______________.

Front 66

66. The SI unit of power is the ______________________.

Front 67

67. The watt and the horsepower are both units of ___________________________________.

Front 68

68. A machine is a device that changes a (an) _____________.

Front 69

69. A device that changes the size or direction of force used to do work is called a (an) ___________________________.

Front 70

70. The force that is exerted on a machine is called the _________________________ force.