Week 1 Flashcards
What is the SI unit and its abbreviation for length?
Metre
m
Define SI units?
Scientific international units.
Standard units of measurement of physical properties.
What is the SI unit and its abbreviation for mass?
Kilogram
kg
What is the SI unit and its abbreviation for time?
Seconds
s
What is the SI unit and its abbreviation for electric current?
Amperes
Amps
What is the SI unit and its abbreviation for temperature?
Kelvin
k
What is the SI unit and its abbreviation for amount of substance?
Mole
mol
What is the SI unit and its abbreviation for luminosity?
Candela
Cd
Revise page two of notes conversions.
Revise page two of notes conversions.
Give example of some measurements that do not require a direction to be meaningful?
Mass
Time
Volume
Mass, time and volume require _________ to describe what quantity is being measured and what are these called?
Magnitude (number) and unit
These are called SCALAR quantities.
Examples of SCALAR quantities.
500 (magnitude) mL (unit) of water
3.25 x 10⁴ (magnitude) kg (unit)
Define VECTOR and give example?
Measurements that do require a direction to be meaningful
Eg: force, displacement
A vector quantity must be written with a ? Give example?
Magnitude (number), unit and direction
Eg: A force of 500 (magnitude) N (unit) East (direction)
Distance is?
Scalar quantity
Distance is the total amount traveled by an object from start to finish.
