4.5 Review Quizizz

Engineers look for ___________ to help them find more efficient ways to communicate.

• electricity

• people

• patterns

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS4-3

Which of the following was an early form of communication before electricity?

• telegraph

• sonar

• signal fire

Writing and sending letters was a fast form of communication.

• true

• false

Signal/smoke fires required a ______________ in order to be effective.

• clear line of sight

• electricity

• thunderstorm

The telegraph allowed signals to be sent through wires over __________.

• short distances

• long distances

Telegraphs use Morse Code, which is a pattern of ______________.

• on-off tones

• zeros and ones

• pixels

When we listen to the radio, we are hearing the radio waves that are being converted into _______ waves.

• light

• sound

• electromagnetic

Tags

NGSS.MS-PS4-2

This is used to detect sound waves underwater.

• sonar

• radio

• morse code

Tags

NGSS.MS-PS4-2

Two people being able to have a conversation at the same time was because of what radio system?

• Radio

• Telephone

• Telegraph

Cell phones send signals that are picked up by the closest cell ________________.

• receptors

• system

• tower

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3