$$\frac{0.1}{8.8} \times 100\% \approx 1\%$$

$$8611 \times 3.28084 = 28251 ft$$

Question 1

Which of the following best describes the difference between a scientific model and a scientific theory?

Accepted Answer

A model is a mental picture used to understand phenomena, while a theory is detailed and can give testable predictions.

Question 2

A measurement is recorded as $$8.8 \pm 0.1 cm. $$What is the percent uncertainty of this measurement?

Accepted Answer

$$\frac{0.1}{8.8} 	imes 100\% \approx 1\%$$

Question 3

Which scenario best illustrates the importance of communication between architects and engineers?

Accepted Answer

A bridge collapsing due to structural failure.

Question 4

When multiplying $$11.3 cm by$$ $$6.8 cm$$, how many significant figures should the result have?

Accepted Answer

2 significant figures

Question 5

Which of the following is NOT a base quantity in the SI system?

Accepted Answer

Force

Question 6

A student measures a board as $$0.062 cm $$wide. How many significant figures does this measurement have?

Accepted Answer

2

Question 7

Which SI prefix corresponds to $$10^{-6}$$?

Accepted Answer

micro ($$\mu)$$

Question 8

If a mountain is $$8611$$ meters high, what is its height in feet? (Given $$1 m$$ $$= 3.28084 ft)$$

Accepted Answer

$$8611 	imes 3.28084 = 28251 ft$$

Question 9

Which of the following statements about significant figures is correct?

Accepted Answer

When adding or subtracting, the answer is no more accurate than the least accurate number used.

Question 10

Which of the following is the correct SI unit for electric current?

Accepted Answer

ampere ($$A)$$

Question 11

A scientist rounds all numbers to one significant figure to estimate a calculation. What is this process called?

Accepted Answer

Order of magnitude estimation

Question 12

Which of the following is a principle rather than a law?

Accepted Answer

A statement that applies to a narrower range of phenomena.

Question 13

Which of the following is a reason a new scientific theory might be accepted?

Accepted Answer

Its predictions agree better with data.

Question 14

Which SI prefix represents $$10^{12}$$?

Accepted Answer

tera ($$T)$$

Question 15

Which of the following is an example of uncertainty in measurement?

Accepted Answer

Difficulty reading the exact width of a board with a ruler.

Question 16

Which of the following is NOT a correct SI base unit abbreviation?

Accepted Answer

f

Question 17

If you add $$23.21 cm $$and $$0.062 cm$$, how many significant figures should the result have?

Accepted Answer

2 significant figures

Question 18

Which of the following best describes a scientific law?

Accepted Answer

A brief description of how nature behaves in a broad set of circumstances.

Question 19

Which of the following is a real-world example of the application of physics in architecture?

Accepted Answer

Designing a bridge to withstand earthquakes.

Question 20

Which of the following is the correct SI unit for temperature?

Accepted Answer

kelvin ($$K)$$

Chapter 1: Introduction, Measurement, and Estimating

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