COMPREHENSIVE SCIENCES PROGRAM
PHYSICAL SCIENCES
EXAMINATION I

Name: _____________________________________      ID # ____________________     Section: _____

PART 1:  Definitions:
Explain the following terms in one or two sentences.  (25 Points)

1.  Experiment

 

2. Meter

 

3.  Law of Gravitation

 

4.  Inertia

 

5.  Work

 

Part 2:  Essay

1.  Explain the Laws of Motion and give an example of each.  (20 points)

 

 

 

 

 

2.  What is the Metric System?  What are its basic units and how is the system used throughout the world?  Give three examples from you experiences of how the system is used.  (15 points)

 

 

 

 

 

Part 3:  Problems

1.  Convert the following.  Please show your work. (5 points each)

  1. 5 x 105 grams (g) to ounces (oz)


  2. 5 kilometers (km) to millimeters (mm)


  3. 50 gallons (gal) to milliliters (ml)


  4. 55 miles per hour (mph) to kilometers per hour (kmph)




2.  What will be the kinetic energy of an object, in joules (J), which has a mass of 2 kg moving with a velocity of 10 m/s (10 points)

 

 

 

3.  The potential energy of a mass resting atop a 50 m tower was determined to be 980 joules (J).  What is the mass of the object? (10 points)

 

 

 

 

EXTRA CREDIT:  (20 points)
     How many pounds does 5 gallons of water weigh?  Note:  The density of water is 1 g/ml