Unit 2: Information Transfer - Lesson 1 - Part 1

This image shows a...

• Telephone

• Telegraph

• Morse Code

• A binary code machine

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NGSS.MS-PS4-1

When you send a text message to the friend, what happens first after you have typed your message?

• the phone encodes the letters of your message using ones and zeros

• the phone sends an analog wave representing your message to another phone

• the phone produces an electromagnetic wave with constant amplitude and frequency

• the phone decodes the zeros and ones and converts them into letters

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NGSS.MS-PS4-3

It seems like everyone has a cell phone now. Sounds, images and the written word can all instantly be sent using this technology. How do cell phones send information from one person to another?

• Sound waves are sent through the air.

• Sound waves are sent through overhead cables.

• The signals are sent through underground cables.

• The signals are sent through communication satellites.

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

A scientist working alone in her laboratory one night makes an exciting new discovery. What is the fastest and safest way for her to share the news with her team?

• Send out an email describing the discovery.

• Publish an article in a scientific magazine.

• Announce the discovery in a television program.

• Call a press conference and announce the discover.

In wireless technology, electronics inside a mobile phone converts analog sound waves to digital impulses on the _____ side and on the _____ side it converts the digital impulses back to analog sound waves.

• sound, electromagnetic

• electromagnetic, sound

• transmitting, receiving

• receiving, transmitting

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NGSS.MS-PS4-3

The term wireless refers to a variety of technologies and devices, such as smartphones, computers, printers, headphones and speakers. A wireless network uses _____ waves to transmit signals.

• radio

• sound

• microwaves

• mechanical

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NGSS.MS-PS4-2

Discovered in the late 1800s and fundamental to important technological advances of the 20th century, _____ silently transmit information all over the world to extend human communications.

• microwaves

• radio waves

• seismic waves

• infrared waves

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

Wifi is a way to send and receive internet data over relatively short distances with low-power transmitters. What type of waves are transmitted for wifi?

• light

• radio

• seismic

• sound

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

_______________ is the process of information being turned into a code and being moved from one place to another.

• Binary code

• Morse code

• Information transfer

• QR code

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NGSS.MS-PS4-3

____________ is a code used to transfer information using dots and dashes (long and short signals) to represent a letter, number or special character.

• Bar code

• Binary code

• Morse code

• QR code