Introduction to Physics

Front

What are the base units of the SI system?

Back

Base units are the fundamental units of measurement in the International System of Units (SI), including meter (m), kilogram (kg), second (s), ampere (A), kelvin (K), mole (mol), and candela (cd).

Front

Which of the following is NOT a base unit of the SI system?

Back

Kilometer is not a base unit; it is a derived unit (1 km = 1000 m).

Front

What is a base unit?

Back

A base unit is a physical quantity that cannot be derived from other physical quantities, such as meter (m), kilogram (kg), and second (s).

Front

What is a derived quantity?

Back

A derived quantity is a physical quantity that is derived from base quantities through multiplication, division, or a combination of both, such as velocity (m/s) or force (N).

Front

Define precision in measurements.

Back

Precision refers to how close measurements are to one another, indicating the consistency of repeated measurements.

Front

Define accuracy in measurements.

Back

Accuracy refers to how close measurements are to the true or accepted value, indicating the correctness of a measurement.

Front

What is the difference between precision and accuracy?

Back

Precision is about the consistency of measurements, while accuracy is about how close those measurements are to the true value.

Front

What is the SI unit for mass?

Back

The SI unit for mass is the kilogram (kg).

Front

What is the SI unit for length?

Back

The SI unit for length is the meter (m).

Front

What is the SI unit for time?

Back

The SI unit for time is the second (s).