Practice Questions

1. A kilogram is..........

(A) 10^3 grams.
(B) 10^3 grams.
(C) 10^6 grams.
(D) 10 grams.

2. A centimeter is...................

(A) 100 meters.
(B) 10 meters.
(C) 0.1 meters.
(D) 0.01 meters.

3. A megawatt is................

(A) 10^6 watts.
(B) 10^3 watts.
(C) 10^-3 watts.
(D) 10^-6 watts.

4. A nanosecond is...........

(A) 10^-3 seconds.
(B) 10^-6 seconds.
(C) 10^-9 seconds.
(D) 10^-12 seconds.

5. A kilometer is

(A) greater than a mile.
(B) less than a mile.
(C) about the size of a football field.
(D) less than a football field.

6. All of the following are base units of the SI system except:

(A) kilogram.
(B) kelvin.
(C) meter.
(D) pound.

7. The SI prefix for 10^-12 is

(A) tera-
(B) giga-
(C) nano-
(D) pico-


8. Convert 0.75 kilometers to meters.

(A)7500 m
(B) 750 m
(C) 75 m
(D) 7.5 m.

9. Convert 0.0215 m to mm.

(A) 0.215 mm
(B) 2.15 mm
(C) 21.5 mm
(D) 215 mm.

10. The number 9452 in scientific notation is

(A) 9.452 × 10^2
(B) 94.52 × 10^2
(C) 0.9452 × 10^4
(D) 9.452 × 10^3.

11. The number .0000475 in scientific notation is

(A) 4.75 × 10^-6
(B) 4.75 × 10^-5
(C) 4.75 × 10^-4
(D) 4.75 × 10^-3.

12.
A 10 L container has a volume expressed in m^3 of

(A) 0.1 m^3
(B) 0.01 m^3
(C) 0.001 m^3
(D) 0 .0001 m^3.