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Mind Map: Sound | Science Class 9 PDF Download
The document Mind Map: Sound | Science Class 9 is a part of the Class 9 Course Science Class 9.
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FAQs on Mind Map: Sound - Science Class 9
| 1. What is sound and how is it produced? |  |
Ans.Sound is a type of energy that travels through the air (or other mediums) as vibrations. It is produced when an object vibrates, creating waves of pressure that propagate through the surrounding medium.
| 2. What are the different types of sound waves? | |
Ans.Sound waves can be classified into two main types: longitudinal waves, where the particle displacement is parallel to the direction of wave propagation (like in sound traveling through air), and transverse waves, where the particle displacement is perpendicular to the direction of wave propagation (like in waves on a string).
| 3. How does the pitch of a sound change? | |
Ans.The pitch of a sound is determined by its frequency; higher frequency sound waves produce higher pitches, while lower frequency sound waves produce lower pitches. This means that the faster an object vibrates, the higher the pitch of the sound it produces.
| 4. What is the relationship between sound and frequency? | |
Ans.Frequency refers to the number of vibrations or cycles that occur in a sound wave per second, measured in Hertz (Hz). The higher the frequency, the more cycles occur in a given time, resulting in a higher pitch sound. Conversely, lower frequencies produce sounds with a lower pitch.
| 5. How do sound waves travel through different mediums? | |
Ans.Sound waves travel through different mediums (like air, water, and solids) at different speeds. Generally, sound travels fastest in solids, slower in liquids, and slowest in gases due to the density and elasticity of the medium.
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Document Description: Mind Map: Sound for Class 9 2025 is part of Science Class 9 preparation.
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