Elevate Science Topic 3: Waves and Information

Front

What is a signal?

Back

A signal is a message that is sent from one place to another, often using waves.

Front

What happens to the wavelength of a wave as its frequency increases?

Back

As the frequency of a wave increases, the wavelength decreases.

Front

What is a circular wave?

Back

A circular wave is a disturbance at a single point that moves outward in all directions.

Front

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

Back

The retina receives the image from the lens.

Front

What is the pupil?

Back

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

Front

What is a wave?

Back

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

Front

What is amplitude in relation to waves?

Back

Amplitude is the height of a wave from its rest position, indicating the energy of the wave.

Front

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

Back

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.

Front

What is the role of a transmitter?

Back

A transmitter sends out signals, often using waves, to communicate information.

Front

What is a receiver?

Back

A receiver is a device that receives signals and converts them back into usable information.