Which of the following is described as having both direction and speed?

The concept of having both direction and speed is fundamental in understanding how certain phenomena operate in the natural world. Wind is defined as the movement of air from high-pressure areas to low-pressure areas, and it is characterized by its speed (how fast it is moving) and direction (the path along which it is moving). For example, when meteorologists report wind conditions, they might say there is a wind blowing at 15 miles per hour from the northeast. This indicates both the strength of the wind (speed) and the path it is taking (direction).

In contrast, pressure, thermal energy, and humidity do not inherently have both speed and direction as their defining characteristics. Pressure is a scalar quantity representing the force applied per unit area, thermal energy refers to the total kinetic energy of particles in a substance and does not involve directional movement, and humidity measures the amount of water vapor in the air without a directional component.