It is shaped by a Mediterranean climate (mild, wet winters and hot dry summers) and wildfire, featuring summer-drought-tolerant plants with hard sclerophyllous evergreen leaves, as contrasted with the associated soft-leaved, drought-deciduous, scrub community of coastal sage scrub, found below the chaparral biome.n its natural state, chaparral is characterized by infrequent fires, with intervals ranging between 10â15 years to over a hundred years.
Echo is caused by reflection of the sound from a broad and hard obstacle. The echo can be heard if the following condition is met. To hear a distinct echo, the time interval between original sound and the reflection must be at least 0.1s.
Through resonance, a comparatively weak vibration in one object can cause a strong vibration in another. By analogy, the term resonance is also used to describe the phenomenon by which an oscillating electric current is strengthened by an electric signal of a specific frequency.An example of resonance is provided by a motor that causes vibration in a piece of furniture in another part of the same house.These vibrations occur because the furniture has a natural frequency equal to the frequency of the vibrations set up by the motor.The furniture is said to be in resonance with the motor.echanical resonance can produce vibrations strong enough to destroy the object in which they occur. For example, soldiers marching over a bridge can set up extreme vibrations at the bridge's natural frequency and shake it apart.