7th Mod 6 Information Technology IT

True/False: People use signals to communicate.

• True
• False

Tags

NGSS.MS-PS4-3

True / False: 1 pixel holds 1 color value

• True
• False

Computers use ____________ signals to store, send, and receive information.

• analog
• sound waves
• digital

Tags

NGSS.MS-PS4-3

Which of these uses digital signals to store, send, or receive information?

• a film camera
• a CD player
• a tape recorder
• a vinyl record

Tags

NGSS.MS-PS4-3

Which of these uses analog signals to store, send, or receive information?

• a DVD player
• a CD player
• a movie streaming service
• a vinyl record

Tags

NGSS.MS-PS4-3

True/False: Light waves, radio waves, and microwaves are examples of electromagnetic waves.

• True
• False

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Analog signals are ____________ affected by noise than digital noise.

• more
• less

Tags

NGSS.MS-PS4-3

Light waves stay inside an optical fiber as they are transmitted because the __________.

• light waves curve to follow the path of the fiber
• fiber is insulated to prevent loss of thermal energy
• fiber reflects the light back into the core
• fiber is perfectly straight

Tags

NGSS.MS-PS4-2

Which do NOT interfere with FM radio transmissions?

• mountains
• buildings
• bad weather
• AM transmissions

Which is an example of a signal being encoded?

• reading braille
• writing a word in Morse code
• hearing sound from a radio
• receiving an email

Tags

NGSS.MS-PS4-3