Download Images Library Photos and Pictures. What is a scalar? A scalar is a quantity that is fully described by a magnitude only. It is described by just a single number. Some examples of scalar quantities include speed, volume, mass, temperature, power, energy, and time. What is a vector? A vector is a quantity that has both a magnitude and a direction. Vector quantities are important in the study of motion. Some examples of vector quantities include force, velocity, acceleration, displacement, and momentum. Form 4 -notes [chapter 1 &2 ] Earthquake illustrated diagrams #ad , #illustrations#faster#vector#editable Scalars and Vectors A scalar quantity is a quantity that has only magnitude. A vector quantity is a quantity that has bo...