Question

Learning Task 2: Write TRUE if the statement us soundly correct and FALSE if the statement is not correct. Write your answer in your notebook​

Answer 1

Answer:

Answer:

1. true.

2. true.

3. false.

4. false.

5. false.

hope it will help you.

Answer 2

1. True
2. False
3. True
4. False
5. True

Explanation:

1. Sound is the energy things produce when the vibrate.

• The statement is true.
• Sound wave is a form of energy produced by vibrations.
• When any object vibrates, it causes motion in the particles of air surrounded by it.
• This motion in nearby particles causes them to collide with other surrounding and neighbouring particles and make them vibrate which helps in transfer of sound wave.

2. As air moves, it carries energy only in one direction.

• The statement is false.
• Air carries energy in the form of waves and waves propagate in two forms: Longitudinal wave and transverse wave.
• The energy is carried in more than one direction.
• Energy is transmitted by vibration of particles and transferring it to neighbouring particles.
• Not every particle vibrate in only direction of propagation. In transverse waves, the direction of vibration of particles is perpendicular to the direction of propagation of wave.

3. There are two different aspects to sound: the physical process and physiological process.

• The statement is true.
• Sound is analysed in two ways: Physically by using instruments for recording measurement of parameters; and Physiologically by listening to sound and ascertaining its experience of feel.
• Physical properties of sound includes: Frequency, Intensity, Complex sounds, Envelope, Modulation and Reverberation.
• Physiological properties of sound includes: Pitch, Loudness, Timbre and Sound location.

4. Sound can travel through solids, liquids and gases and even in a vacuum.

• The statement is false.
• Sound waves can travel only in mediums with particles.
• Sound is a mechanical wave and it requires particle vibration for its propagation.
• Sound can travel through solids, liquids and gases but not in vacuum. This is the reason why it is inaudible in space.

5. Sound waves are examples of longitudinal waves.

• The statement is true.
• Sound waves require a medium to propagate.
• Longitudinal waves have vibration of particles in the direction of propagation of wave. And Sound waves are follow the same.