Respuesta :
1. Answer;
D) Breaking wave
A "Breaking wave" is described as a wave that is not confined to the space along the medium
Explanation;
- Breaking waves are types of waves in which the amplitude reaches critical levels at which some process may suddenly occur and cause large amounts of wave energy to be generated.
- For example, ocean waves are formed, and then break.
- There are four types of breaking wave, namely; spilling, surging, collapsing and plunging waves. Spilling waves are produced when the ocean floor has a gentle slope. Plunging waves results from a steep ocean floor being hit by a swell. surging waves result when swells arrive at the coastlines with a steep beach profile. Collapsing waves are a combination of plunging waves and surging waves.
2. Answer;
C) Traveling Wave
Explanation;
- Travelling waves are types of waves that are temporary, which creates a disturbance and moves at a constant speed along the transmission medium or line.
- When these waves occurs, they do so for a very short time and may result to much disturbance in the transmission live. An example is a transient wave.
- These waves play vital role in determining the voltages and the currents at all points in the power system.
3. Answer;
D) Constructive interference is occurring
Explanation;
- Interference is the property of waves that occurs when two waves travelling in the same medium at the same time meets or superpose with each other.
- When this happens the waves pass through each other without any disturbance such that the net displacement of particles in the medium will be the sum of individual wave displacements.
- Interference may be constructive or destructive. Constructive interference when the two waves meet resulting to a wave with a higher amplitude than the individual waves, while destructive occurs when the resulting wave has an amplitude less that the individual waves.
4. Answer;
A) In a longitudinal wave, particle displacement is parallel to the direction of the wave motion
Explanation;
- The transmission of mechanical waves involves vibration of particles through the medium of transmission, thus transfer of energy from one point to another. The vibration of particle may be in the form of a longitudinal wave or a transverse wave.
- In a longitudinal wave the vibration of particles is parallel to the direction of the wave motion while in a transverse wave the vibration of particles is perpendicular to the direction of the wave motion.
5. Answer;
C) Region of high pressure in a medium caused by a passing wave
Explanation;
- The transmission of mechanical waves involves vibration of particles through the medium of transmission, thus transfer of energy from one point to another. The vibration of particle may be in the form of a longitudinal wave or a transverse wave.
- In a longitudinal wave the vibration of particles is parallel to the direction of the wave motion while in a transverse wave the vibration of particles is perpendicular to the direction of the wave motion.
- Longitudinal waves creates regions of low pressure in a medium during transmission of a wave called rarefactions and regions of high pressure called compressions.
6. Answer;
A) Does require a medium to transfer
Explanation;
- Mechanical waves are types of waves that require a material medium for transmission. An example of mechanical wave is the sound wave whose transmission occurs in medium such as solids, liquids and gases.
- The transmission of mechanical waves involves vibration of particles through the medium of transmission, thus transfer of energy from one point to another. The vibration of particle may be in the form of a longitudinal wave or a transverse wave.
- In a longitudinal wave the vibration of particles is parallel to the direction of the wave motion while in a transverse wave the vibration of particles is perpendicular to the direction of the wave motion.
7. Answer;
D) Wavelength is the speed at which a wave travels
Explanation;
- The wavelength refers to the distance between two successive crests or troughs in a transverse wave or between two rarefactions or compression in a longitudinal wave, while the frequency of a wave refers to the number of complete oscillation in one second.
- The speed of a wave or the velocity is directly influenced by the wavelength and the frequency of the wave.
- The speed of a wave is given by the product of frequency and wavelength.
- Therefore, since wavelength directly determines the speed of a wave then we can say that the wavelength is the speed at which the wave travels.
