Unit Review

Unit Review

Realm of Physics

Physical Quantities, Units, and Measurements

Accuracy, Precision, Errors, and Uncertainties

Fill in the Blanks

Physics is considered to be the most

science.

Fill in the Blanks

type of unit is used to measure A.

Multiple Choice

Given a list of liquid measurements: 31.6 L, 31.8 L, 31.9 L, 32.1 L, and 32.3 L. If the accepted value is 32 L, what is the value of uncertainty?

• 0.1 L

• 0.2 L

• 0.3 L

• 0.4 L

Fill in the Blanks

FPS system of units is also known as the

system of units.

Multiple Choice

What shape best describes a steradian?

Multiple Choice

Who was the man shown in the image?

• Albert Einstein

• Neil Henrik David Bohr

• Stephen William Hawking

Multiple Select

Which of the following is true about the rules for significant figures?

• All non-zero digits are significant.

• Zeroes between non-zero digits are significant.

• Terminal zeros in a number without decimal are significant.

• Terminal zeros that are also to the right of the decimal point of a number are significant.

Multiple Choice

The International System of Units was known to be a British system of units

• True

• False

Multiple Choice

True or accepted value depends on the degree of accuracy.

• True

• False

Fill in the Blanks

From the types of measuring systems, MKS stands for _____-_________-_______

Multiple Select

Which of the following is true about the factors of uncertainty?

• Limitations of measuring devices

• Skills of the person making the measurement

• Irregularities in the object being measured

• Any other factors that affect the outcome

Multiple Choice

A list of boiling point measurements are as follows: 401.21 K, 401.45 K, 402.32 K, and 402.50 K. If the accepted value is 402 K, what will be the value of the percent uncertainty?

• 0.0197%

• 0.197%

• 1.97%

Fill in the Blanks

quantities are the physical quantities that do not depend to other physical quantities for their measurements.

Multiple Choice

Who was the man shown in the picture?

• Casimiro V. Del Rosario

• Gregorio Y. Zarra

• Pedro B. Escuro

Fill in the Blanks

is the quantitative measure of how much your measured values deviate from a standard or expected value.

Multiple Choice

Which of the following is not a derived quantity?

• Area

• Length

• Volume

• Speed

Multiple Select

Which of the following is considered as a random error?

• Late reaction time

• Negative value on the measuring instrument

• Technique on handling the measuring instruments

• Calibration of the measuring instruments

Multiple Choice

The volume of a substance has an accepted value of 15 L. Which of the following sets of measurements best represents good accuracy?

• 14.7 L, 14.9 L, 15.5 L, 15.8 L

• 14.4 L, 14.5 L, 14.6 L, 15.0 L

• 14.5 L, 14.8 L, 15.3 L, 15.4 L

• 14.8 L, 14.9 L, 15.1 L, 15.6 L

Multiple Select

Which of the following is true about systematic errors?

• Zero error in measuring instrument

• Poor calibration of the instrument

• Incorrect calibration on the measuring instruments

• Technique in conducting the procedure

Multiple Choice

What is the SI unit for electric current?

• Ampere

• Candela

• Kelvin

• Newton

Fill in the Blanks

CGS system of measurement was also known as

system of units.

Multiple Choice

Where do we use the fundamental unit luminous intensity for?

Multiple Select

Which of the following calculations of significant figures is wrong?

• 5.1 + 33.301 = 38.401

• 3.201 - 1.02 + 4.7 = 6.9

• 7.94 / 3.078 = 2.6

Multiple Choice

The length of an object is known to be 16 m. A series of measurements were conducted and the results were: 15.7 m, 15.8 m, 15.9 m, 16.1 m, and 16.3 m. The set of values is best described as?

• accurate and precise

• precise but not accurate

• accurate but not precise

• neither accurate nor precise

Fill in the Blanks

________ _______ is the rate of an electric charge past a point or a region.