Uuu999 Essay

ch1 Key 1. People sometimes have difficulty distinguishing between scientific explanations of common events and other kinds of explanation (superstition, prejudice, magic, etc.). Which of the following best helps to identify a scientific explanation?
A. The explanation goes against the results of public opinion polls.
B. We can test the explanation by comparing its predictions to measurement results.
C. The explanation changes according to the social status of the observer.
D. The explanation relies on local folklore.

Griffith - Chapter 01 #1 2. The main reason that physics is perceived to be difficult is because people think that
A. all of its concepts seem incompatible with our everyday experience.
B. it frequently changes its explanations of common occurrences.
C. math is required to understand its ideas.
D. the laws of physics are often shown to be wrong.

Griffith - Chapter 01 #2 3. The metric system of units is based on which number?
A. 10.
B. 8.
C. 2.
D. 16.

Griffith - Chapter 01 #3 4. Which of the following is a correct metric unit for volume?
A. Smidgens.
B. Drops.
C. Microns.
D. Liters.

Griffith - Chapter 01 #4 5. A new system of units is invented where the basic unit of length is the "dak." The "dak" is defined as equal to 3 inches, and there are 2.54 centimeters in an inch. How many "daks" are there in a centimeter?
A. 6.
B. 0.131.
C. 3.
D. 0.254.

Griffith - Chapter 01 #5 6. Suppose that, as it evaporates in the upper atmosphere, a raindrop's diameter changes in one minute from one millimeter to one micrometer. Its diameter has decreased by a factor of
A. 10, i.e., it is one tenth of the initial size.
B. 100, i.e., it is one hundredth of the initial size.
C. 1,000 (or, 103), i.e., it is one thousandth of the initial size.
D. 1,000,000 (or, 106), i.e., it is one millionth of