Standards of Measurement Concept Check

Which of the following is a prefix used in the SI system and its corresponding multiple of ten?

• Centi - 10⁹

Why can measurements be inaccurate without standards?

• Because people may use different quantities to measure the same thing

• Because rulers are always broken

• Because all measurements are always accurate

• Because standards are not needed for accuracy

A student shoots five arrows and none of them are grouped together. What does this indicate about the precision?

• The measurement is not precise

• The measurement is accurate

• The measurement is both precise and accurate

• The measurement is neither precise nor accurate

Which of the following best describes a situation where measurements are precise but not accurate?

• Five arrows shot and all are grouped together but not in the bullseye

• Five arrows shot and all are spread out across the target

• Five arrows shot and all are grouped in the bullseye

• Five arrows shot and none hit the target

Which of the following best describes the difference between accuracy and precision?

• Accuracy refers to how close measurements are to the true value, while precision refers to how close measurements are to each other.

• Accuracy refers to how close measurements are to each other, while precision refers to how close measurements are to the true value.

• Accuracy and precision mean the same thing.

• Precision is only important in mathematics, not in science.

If a set of measurements are all very close to each other but far from the true value, which term best describes this situation?

• High accuracy, high precision

• Low accuracy, high precision

• High accuracy, low precision

• Low accuracy, low precision

What does the abbreviation "SI" stand for in the context of measurement systems?

• Standard International

• System of Integration

• Le Systeme Internationale d’Unites

• Scientific Index

Which of the following is NOT a base unit in the International System of Units (SI)?

• Meter

• Kilogram

• Liter

• Candela

What is the value represented by the prefix "micro-" (μ) in the International System of Units?

• 0.001

• 0.000001

• 0.01

• 0.1

If you have a rope that is 3,075 mm long, how many centimeters long is it?

• 30.75 cm

• 307.5 cm

• 3.075 cm

• 3075 cm