Physics Test * Measurements :
Part I - Short answer - Match each Prefix with its order of magnitude
1)
2)
3)
4)
5)
megamicrokilocentimilli-
_____
_____
_____
_____
_____
10 points
A) 103
B) 10-2
C) 10 -6
D) 106
E) 10 -3
Part II - Short answer - Fill ins and multiple choice
6. The unit of force in the SI metric system is the
1) slug
2) kilogram
3) Newton
60 points
4) Pound
7. A student measures the mass of a rock to be 326.32 grams ± 0.05 grams.
measurement is
1) 0.32 grams 2) 0.05 grams 3) 0.025 grams
4) 0.02 grams
The uncertainty in the
8. As an object moves away from the center of the earth, its weight
1) increases
2) decreases
3) remains constant
9. What is the order of magnitude for the measurement 860 newtons
1) 10-2
2) 101
3) 102
4) 104
10. How many significant digits are contained in the measurement 4000 centimeters.
1) 1
2) 2
3) 3
4) 4
11. How many significant digits are contained in the measurement 50.40 seconds.
1) 1
2) 2
3) 3
4) 4
12. When the measurements 4.86 mm and 0.32 mm are multiplied, the answer, to the correct number of
significant digits, is
1) 1.6 mm2
2) 1.56 mm2
3) 1.555 mm2
4) 1.5552 mm2
13. Which is the most likely mass of a high school physics student?
1) 10 kg
2) 50 kg
3) 600 kg
4) 2500 kg
14. What is the approximate thickness of a pencil?
1) 101 m
2) 100 m
3) 10-2 m
4) 10-3 m
15. How many significant digits are contained in the measurement 0.050 volts.
1) 1
2) 2
3) 3
4) 4
16. Find the product (4 x 10-7 ) x (2 x 109 )
17. Find the quotient (6 x 102 )  (2 x 108 )
18. How many grams are in 2700 milligrams.
19.
How many kilograms are in 50 grams.
20. Express 0.00054 in scientific notation
Part III - Problem solving - Show all work needed to solve each problem.
30 points
** express in proper significant digits
** 1. A lab table / Desk in our room measures 0.63 meters wide and 1.63 meters long, what is the
surface area of the table?
2. A Big Bug races across the floor in Mr. Stella’s office covering 2.6 meters in 1.2 seconds.
How fast was the Big Bug moving?
3. Examine the set of data recorded below. The data represents measured values for the gravitational field
strength near the surface of the moon.
Measured Values
Actual Value
1.41 N/kg
1.65 N/kg
1.6 N/kg
1.80 N/kg
1.52 N/kg
1.68 N/kg
A) Determine the Average value for the experimental Data.
B) Compare the experimental data to the actual value and determine the relative (%) error for the
data.
C) Is the experimental data Accurate? Explain!
D) Does the data have precision? Explain!
4. The typical weight of a high school student is approximately 132 pounds. If 1 kg = 2.2 lbs.
What is the typical mass of this student?
5. Calculate the volume of a swimming pool with the dimensions of 5.6 meters wide , 18 meters long
and 2.0 meters deep.