1-3 SI Measurements

Multiple Choice

What does the Müller-Lyer illusion demonstrate about human perception and measurement?

• It shows that our perception can be deceived, making measurements necessary.

• It proves that all lines are perceived equally by everyone.

• It demonstrates that illusions do not affect scientific measurements.

• It shows that measurements are always accurate.

Multiple Choice

Which of the following best describes the subject of the images shown in slides 2 and 3?

• Geometric illusions

• Measurement tools

• Optical illusions

• Mathematical symbols

Multiple Choice

What is the main concept illustrated by the diagrams in slides 4 and 5?

• The actual size of objects

• The effect of surrounding shapes on perception

• The measurement of circles

• The use of color in measurement

Multiple Select

Select all the correct statements about the SI system from the following:

• SI stands for Systeme International d'Unites.

• SI is based on seven base units.

• All SI units are derived units.

• Scientists use SI units for universal understanding.

Multiple Choice

Which of the following statements about SI units is NOT correct?

• SI units allow scientists to interpret each other's measurements universally.

• SI is built upon seven metric units called base units.

• Derived SI units are made from combinations of base units.

• SI units are only used in France.

Fill in the Blanks

Fill in the blank: The international system of units is abbreviated as

.

Multiple Choice

Which SI base unit is used to measure the amount of substance?

• Mole

• Kilogram

• Candela

• Kelvin

Multiple Select

Which of the following are derived SI units?

• Joule

• Pascal

• Kelvin

• Coulomb

Fill in the Blanks

The prefix for one thousandth is

Multiple Choice

According to the example given, which device is more precise for measuring time?

• Analog clock

• Stopwatch

• Digital calendar

• Hourglass

Multiple Choice

Which of the following best describes how percent error is calculated?

• Percent error is the difference between measured and true value divided by the true value, multiplied by 100%.

• Percent error is the measured value divided by the true value, multiplied by 100%.

• Percent error is the true value divided by the measured value, multiplied by 100%.

• Percent error is the sum of measured and true value divided by 2, multiplied by 100%.