8th Grade Unit 4 Waves

Front

What is fiber optics?

Back

Fiber optics is a technology that uses thin strands of glass to transmit information as pulses of light.

Front

What must information be converted to for fiber optic transmission?

Back

Information must first be converted to a digital signal.

Front

What defines a wave?

Back

A wave is defined by its repeating pattern, which includes specific wavelength, frequency, and amplitude.

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive points of a wave that are in phase, such as crest to crest or trough to trough.

Front

What is frequency?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

What is amplitude?

Back

Amplitude is the maximum distance that points on a wave move from their rest position, indicating the energy of the wave.

Front

What is energy in the context of waves?

Back

Energy in waves is related to the amplitude; higher amplitude means more energy.

Front

What is an example of an object absorbing light?

Back

A black sweater in the sun is an example of an object absorbing light.

Front

What happens to light when it hits a clean window?

Back

A clean window reflects some light and transmits the rest, allowing light to pass through.

Front

What is the relationship between amplitude and energy in waves?

Back

The energy carried by a wave increases with the square of its amplitude.