Elevate Science Topic 3: Waves and Information

What is frequency?

• The speed of sound in a medium.

• The number of waves that pass a point in a given amount of time, usually measured in Hertz (Hz).

• The distance between two consecutive peaks of a wave.

• The amplitude of a wave measured in decibels.

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What is the difference between a transverse wave and a longitudinal wave?

• In a transverse wave, the disturbance moves parallel to the direction of the wave, while in a longitudinal wave, the disturbance moves perpendicular to the direction of the wave.

• In a transverse wave, the disturbance moves perpendicular to the direction of the wave, while in a longitudinal wave, the disturbance moves parallel to the direction of the wave.

• Both waves have disturbances that move in the same direction as the wave.

• Transverse waves can travel through solids only, while longitudinal waves can travel through both solids and liquids.

What is amplitude in relation to waves?

• The distance between two consecutive crests of a wave.

• The height of a wave from its rest position, indicating the energy of the wave.

• The speed at which a wave travels through a medium.

• The frequency of a wave measured in hertz.

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What is superposition in wave theory?

• A principle stating that waves cannot interfere with each other.

• The phenomenon where waves cancel each other out completely.

• The principle that when two or more waves overlap, the resulting wave is the sum of the individual waves.

• A method to measure the speed of sound in different mediums.

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What is a wave?

• A wave is a disturbance that transfers energy from one place to another.

• A wave is a type of particle that moves through space.

• A wave is a solid object that vibrates in place.

• A wave is a form of light that cannot be seen.

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What is the function of an antenna?

• To amplify sound signals

• To transmit or receive signals, often in the form of radio waves.

• To convert electrical energy into light

• To store energy for later use

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What is a receiver?

• A device that amplifies signals for better transmission.

• A device that receives signals and converts them back into usable information.

• A device that generates signals for communication.

• A device that stores signals for later use.

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What is the pupil?

• The colored part of the eye that surrounds the iris.

• The black hole at the center of the eye that lets light in.

• The outer layer of the eye that protects it from damage.

• The fluid-filled space behind the lens of the eye.

What is the crest of a wave?

• The lowest point of a wave.

• The highest point of a wave.

• The distance between two crests.

• The speed at which a wave travels.

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What part of the eye receives the image from the lens?

• The cornea

• The iris

• The retina

• The pupil