Introduction To Physics And Measurement - SS1 Physics Past Questions and Answers - page 4

Accuracy refers to how close a measured value is to the true or accepted value. It indicates the absence of systematic errors in the measurement. A measurement is considered accurate if it is close to the true value, regardless of the precision of the measurement.

Precision refers to the degree of consistency in a set of measurements. It reflects the ability to obtain the same or similar results repeatedly. A measurement is considered precise if repeated measurements yield similar results, even if they are not close to the true value.

Scientific notation (also known as standard form) is a way to express numbers in a concise and convenient form, especially when dealing with very large or very small numbers. It is expressed as a number between 1 and 10 multiplied by a power of 10.