Download Chapter 1

Chapter
1
Chapter Assessment Questions
Question 1
How will you express 1 nm in m?
A. 1×10-3 m
B. 1×10-6 m
C. 1×10-9 m
D. 1×10-1 m
Chapter
1
Chapter Assessment Questions
Answer 1
Answer: C
Reason: 1 nm is read as 1 nanometer. Here, the prefix nano stands
for 10-9 m.
Chapter
Chapter Assessment Questions
1
Question 2
Add the following numbers and write the answer in the least
significant digits: 12.3 + 1.20 + 123.
A. 136.5
B. 1.4 × 102
C. 137
D. 1.37 × 102
Chapter
1
Chapter Assessment Questions
Answer 2
Answer: C & D
Reason: The least significant digit in the above expression is in the
1’s place. Therefore, the answer should stop at the 1’s
place.
Chapter
Chapter Assessment Questions
1
Question 3
Convert 3.650 into 3 significant digits.
A. 3.7
B. 3.6
C. 3.65
D. 0.360 × 101
Chapter
1
Chapter Assessment Questions
Answer 3
Answer: C
Reason: The last reported digit would be the 5. The digit to the right
is a 0.
Chapter
1
Chapter Assessment Questions
Question 4
If 15 different individuals perform an experiment, and 15 answers
are obtained, which answer will be accepted as the most accurate?
A. The answer obtained by the maximum number of persons.
B. The eighth number if all the numbers are arranged in an
ascending order.
C. The answer most nearer to the expected answer.
D. The average of all the 15 answers.
Chapter
1
Chapter Assessment Questions
Answer 4
Answer: C
Reason: Accuracy describes how well the result of a measurement
agrees with the real value.
Chapter
Chapter Assessment Questions
1
Question 5
A quadratic relationship between two variables is written as ____.
A.
B.
C.
D.
Chapter
1
Chapter Assessment Questions
Answer 5
Answer: B
Reason: Quadratic relationship between two variables is
y = ax2 + bx + c.
Chapter
1
Standardized Test Practice
Multiple Choice
1.
Two laboratories use radiocarbon dating to measure the age of two
wooden spear handles found in the same grave. Lab A finds an age
of 2250  40 years for the first object; lab B finds an age of 2215  50
years for the second object. Which of the following is true?
A. Lab A’s reading is more accurate than lab B’s.
B. Lab A’s reading is less accurate than lab B’s.
C. Lab A’s reading is more precise than lab B’s.
D. Lab A’s reading is less precise than lab B’s.
Chapter
Standardized Test Practice
1
Multiple Choice
2.
Which of the following is equal to 86.2 cm?
A. 8.62 m
B. 0.862 mm
C. 8.62×10-4 km
D. 862 dm
Chapter
Standardized Test Practice
1
Multiple Choice
4.
What is the slope of the graph?
A. 0.25 m/s2
B. 0.4 m/s2
C. 2.5 m/s2
D. 4.0 m/s2
Chapter
Standardized Test Practice
1
Multiple Choice
5.
Which formula is equivalent to
A.
B.
C.
D.
Chapter
1
Standardized Test Practice
Extended Answer
6.
You want to calculate an acceleration, in units of m/s2, given a
force, in N, and the mass, in g, on which the force acts. (1 N = 1
kg·m/s2)
A. Rewrite the equation F = ma so a is in terms of m and F.
B. What conversion factor will you need to multiply by to convert
grams to kilograms?
C. A force of 2.7 N acts on a 350-g mass. Write the equation you
will use, including the conversion factor, to find the acceleration
with complete units.
Chapter
1
Standardized Test Practice
Multiple Choice
7.
Find an equation for a line of best fit for the data shown below.