Define frequency:

the distance from the rest position to a crest or a trough; the more energy, the greater the amplitude

a repeated back-and-forth or up-and-down motion.

the part of a longitudinal wave where the particles are far apart

the number of waves that pass a set point in a certain amount of time

the number of waves that pass a set point in a certain amount of time

Explanation:

Frequency (f) is the number of cycles a wave can complete in one second. The standard unit of frequency is Hertz (Hz).

Mathematically, frequency of a wave is inversely proportional to its period (T)

i.e F = 1/T

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.