Activity #1 Write the definition of the following fundamental quantities and their SI unit. 1. Length 2. Mass 3. Time 4. Electric current 5. Temperature 6. Amount of substance 7. Luminous intensity
Answer (1)
1. LengthLength is the measurement of distance between two points.SI Unit: Meter (m)2. MassMass is the amount of matter contained in a body.SI Unit: Kilogram (kg)3. TimeTime is the continued progression of existence and events from the past, through the present, into the future.SI Unit: Second (s)4. Electric CurrentElectric current is the flow of electric charge in a conductor.SI Unit: Ampere (A)5. TemperatureTemperature measures the degree of hotness or coldness of a body.SI Unit: Kelvin (K)6. Amount of SubstanceIt refers to the quantity of entities (such as atoms, molecules, ions) in a substance.SI Unit: Mole (mol)7. Luminous IntensityLuminous intensity is the measure of the wavelength-weighted power emitted by a light source in a particular direction.SI Unit: Candela (cd)
