Question

Is pressure scalar?

Answer 1

Pressure is a scalar because it's quantity is described with a magnitude and not with a direction.

Explanation:

Scalars are quantities that are described by a numerical value.
To describe a scalar, we only need to know thier amount not their direction (e.g. temperature`->` 18 degrees Celsius, pressure `->` 9 866 Pa; other examples of scalars are speed, length, volume, mass, time, work, energy...)
• Scalar quantities are described by real numbers.
Vectors are quantities that are described by a numerical value and a direction. (e.g. velocity `->` 30 m/sec, East; displacement `->` 6 mi., North; other examples of vectors are moment, force, acceleration...)