Information Technologies Test (8)

Front

What type of waves do CDs use for data storage?

Back

CDs use digital waves.

Tags

NGSS.MS-PS4-3

Front

Which type of radio transmission does NOT interfere with FM radio?

Back

AM transmissions do NOT interfere with FM radio.

Front

What are the two values that digital signals consist of?

Back

Digital signals consist of only two values: 0 and 1.

Front

What is NOT a property of electromagnetic waves?

Back

Electromagnetic waves do NOT consist of a series of pulses.

Tags

NGSS.MS-PS4-1

Front

Why do light waves stay inside an optical fiber during transmission?

Back

Light waves stay inside an optical fiber because the fiber reflects the light back into the core.

Tags

NGSS.MS-PS4-2

Front

What is the definition of digital signals?

Back

Digital signals are signals that represent data as discrete values, typically 0s and 1s.

Tags

NGSS.MS-PS4-3

Front

What is the main difference between analog and digital signals?

Back

Analog signals can take on any value within a range, while digital signals consist of discrete values.

Tags

NGSS.MS-PS4-3

Front

What is the role of electromagnetic waves in communication technologies?

Back

Electromagnetic waves are used to transmit information over distances in various communication technologies.

Tags

NGSS.MS-PS4-3

Front

What is the principle of total internal reflection in optical fibers?

Back

Total internal reflection occurs when light hits the boundary of a medium at an angle greater than the critical angle, causing it to reflect back into the medium.

Tags

NGSS.MS-PS4-2

Front

What are the main components of an optical fiber?

Back

An optical fiber consists of a core, cladding, and protective outer layer.

Tags

NGSS.MS-PS4-2