Base units
There are seven base ‘SI’ units. They are:
Summary of units
| Quantity | Unit Name | Unit Symbol |
|---|
| Length | Meter | m |
| Mass | Kilogram | kg |
| Time | Second | s |
| Electric current | Ampere | A |
| Temperature | Kelvin | K |
| Amount of Substance | Mole | mol |
| Question | Answer |
|---|
| What are the seven base SI units? | meter (m) for length, kilogram (kg) for mass, second (s) for time, ampere (A) for electrical current, kelvin (K) for temperature, mole (mol) for amount of substance, candela (cd) for light intensity |
| What is the SI base unit for length? | meter (m) |
| What is the SI base unit for mass? | kilogram (kg) |
| What is the SI base unit for time? | second (s) |
| What is the SI base unit for electrical current? | ampere (A) |
| What is the SI base unit for temperature? | kelvin (K) |
| What is the SI base unit for amount of substance? | mole (mol) |
| What is the SI base unit for light intensity? | candela (cd) |
| What quantity does the meter (m) measure? | length |
| What quantity does the kilogram (kg) measure? | mass |
| What quantity does the second (s) measure? | time |
| What quantity does the ampere (A) measure? | electrical current |
| What quantity does the kelvin (K) measure? | temperature |
| What quantity does the mole (mol) measure? | amount of substance |
| What quantity does the candela (cd) measure? | light intensity |