Sensing Sound-1

How does sound travel through the air?

• Sound travels through the air by creating ripples in the space-time continuum

• Sound waves cause particles to vibrate back and forth in the direction of the wave, creating changes in air pressure that transmit through the medium.

• Sound is carried by tiny invisible fairies that fly through the air

• Sound travels through the air by bouncing off clouds and reaching our ears

What is noise pollution and how does it affect us?

• Noise pollution is only a minor inconvenience

• Noise pollution has no impact on the environment

• Noise pollution is excessive, displeasing, or disruptive noise that can have harmful effects on human health and the environment.

• Noise pollution is beneficial for human health

What is the unit used to measure the volume of sound?

• decibels (dB)

• watts

• hertz

• meters

Which part of the ear that collects sound waves?

• Outer ear (pinna)

• Ear canal

• Middle ear (ossicles)

• Inner ear (cochlea)

How can excessive exposure to loud noises lead to hearing damage?

• Excessive exposure to loud noises can damage the delicate hair cells in the inner ear, leading to permanent hearing loss.

• Excessive exposure to loud noises can result in enhanced hearing clarity.

• Excessive exposure to loud noises can improve hearing abilities.

• Excessive exposure to loud noises can lead to stronger ear muscles.

What are some effective ways to protect your hearing in noisy environments?

• Listening to music at maximum volume

• Using earplugs or earmuffs, maintaining a safe distance from loud sources, taking breaks from noise exposure, and limiting the use of personal audio devices at high volumes.

• Ignoring the noise

• Exposing yourself to loud noises for longer durations

What is the primary medium through which sound travels in the ocean?

• Water

• Seaweed

• Sand

• Marine animals

How do sound waves travel through different mediums?

• Sound waves travel faster in solids, slower in liquids, and slowest in gases due to differences in particle density and arrangement.

• Sound waves travel at the same speed in all mediums.

• Sound waves travel faster in gases, slower in liquids, and slowest in solids due to differences in particle density and arrangement.

• Sound waves travel through mediums by creating electromagnetic fields.

How do sound waves travel through a vacuum?

• Sound waves cannot travel through a vacuum

• Sound waves travel faster in a vacuum compared to air

• Sound waves create their own medium in a vacuum

• Sound waves bounce off particles in a vacuum

What is the frequency range of human hearing?

• 20 Hz to 20 kHz

• 10 Hz to 30 kHz

• 5 Hz to 25 kHz

• 30 Hz to 40 kHz